The Best Canon R7 Memory Cards With Speed & Buffer Tests

We have tested 23 memory cards in the R7 to work out which memory cards will clear the buffer the fastest depending on the file type that you are shooting in.

There is actually a difference of around 20 seconds between the fastest and slowest memory cards in our tests when shooting in RAW, so it is helpful to know how each card performs in camera.

So whether you are still thinking about buying the Canon R7 or are lucky enough to already own one, this guide will help you to choose the best memory card for your needs.

Supported Memory Cards

The Canon R7 has dual memory cards slots and each slot supports SD/SDHC/SDXC UHS-I and UHS-II memory cards.

Here’s a quick speed comparison between UHS-I and UHS-II cards.

• UHS-I: theoretical maximum transfer speeds of up to 104MB/s
• UHS-II: theoretical maximum transfer speeds of up to 312MB/s

If you shoot a lot of bursts and require the buffer to clear as quickly as possible, then you will want to go with the faster UHS-II cards.

If you only shoot single shots then the slower UHS-I cards will probably be fast enough for you. That is providing you don’t mind waiting a little longer to copy the files over to your computer (around 3x longer).

Quick In-Camera Memory Card Speed Comparison

Here’s a quick in-camera speed comparison for the most popular UHS-II and UHS-I memory cards on the market.

All of these tests were done with the R7 with firmware version 1.1.0 and shooting in RAW with the Electronic Shutter at 30 FPS.

If you scroll down a little further you’ll find our complete buffer test results for each memory card or just click on the card name to jump straight there.

Best UHS-II Memory Cards

These in-camera tests were performed using the Canon R7 and 64GB UHS-II memory cards.

Memory Card	In-Camera Write Speed *	Price Check
1. Kingston Canvas React Plus UHS-II	185 MB/s	B&H Photo | Amazon
2. Sony SF-G Tough UHS-II **	185 MB/s	B&H Photo | Amazon
3. Delkin Devices POWER UHS-II	183 MB/s	B&H Photo | Amazon
4. Lexar Professional 2000X UHS-II	183 MB/s	B&H Photo | Amazon
5. Transcend SD 700S UHS-II	182 MB/s	B&H Photo | Amazon
6. Ritzgear Video Pro UHS-II	181 MB/s	B&H Photo | Amazon
7. Hoodman Steel 2000x UHS-II	177 MB/s	B&H Photo | Amazon
8. PNY X-PRO 90 UHS-II	174 MB/s	B&H Photo | Amazon
9. ProGrade V90 UHS-II	167 MB/s	B&H Photo | Amazon
10. SanDisk Extreme Pro UHS-II	166 MB/s	B&H Photo | Amazon
11. Sony SF-M Tough UHS-II **	120 MB/s	B&H Photo | Amazon
12. Sony SF-M UHS-II	120 MB/s	B&H Photo | Amazon
13. ProGrade V60 UHS-II	110 MB/s	B&H Photo | Amazon
14. Lexar Professional 1667X UHS-II	90 MB/s	B&H Photo | Amazon
15. Sony SF-E UHS-II	69 MB/s	B&H Photo | Amazon
16. Angelbird AV Pro Mk 2 V90 UHS-II	68 MB/s	B&H Photo | Amazon

Best UHS-I Memory Cards

These in-camera tests were performed using the Canon R7 and 64GB UHS-I memory cards.

Memory Card	In-Camera Write Speed *	Price Check
1. Delkin Devices Advantage UHS-I	78 MB/s	B&H Photo | Amazon
2. Kingston Canvas Go! Plus UHS-I	76 MB/s	B&H Photo | Amazon
3. SanDisk Extreme Pro UHS-I	74 MB/s	B&H Photo | Amazon
4. Transcend 500S UHS-I	63 MB/s	B&H Photo | Amazon
5. Lexar Professional 1066x UHS-I	61 MB/s	B&H Photo | Amazon
6. SanDisk Extreme UHS-I	61 MB/s	B&H Photo | Amazon
7. Lexar Professional 633X UHS-I	36 MB/s	B&H Photo | Amazon

UHS-II Memory Card Speed & Buffer Tests

If you shoot continuous bursts and need your buffer to clear quickly, then we would definitely recommend the fastest UHS-II cards.

Please note that not all UHS-II cards offer the same read/write performance. They can also vary greatly when used in-camera compared to their claimed read/write speeds.

Below you will find our recommended UHS-II memory cards for the Canon R7, all of which have been tested in the R7 for the most accurate results.

1. Kingston Canvas React Plus UHS-II

Although not everyone is aware of Kingston, they have actually been in the memory business since 1987!

Their Kingston Canvas React Plus UHS-II are very well reviewed and extremely fast, and often out perform more expensive cards.

Their price per GB together with their performance and reliability makes this our number one recommendation for the R7.

• Bus speed: UHS-II
• Video speed class: V90
• Capacities: 32GB (SDHC), 64GB, 128GB, 256GB (SDXC)
• Read speed: 300 MB/s
• Write speed: 260 MB/s

In-Camera Speed / Buffer Test Results

When shooting in RAW the actual R7 in-camera write speed is around 185 MB/s.

Here are our complete in-camera speed / buffer test results when using a 64GB Kingston Canvas React Plus UHS-II memory card in Hi+ Drive Mode using the Electronic Shutter (30 FPS).

Image Type & Size	Shots Before Hitting Buffer	Time to Clear Buffer (Seconds)
RAW (36.1MB *)	41	6.20
CRAW (16.4MB *)	84	7.73
JPEG L (10.6MB *)	88	8.10
HEIF L (13.4MB *)	104	12.30
RAW (36.1MB) + JPEG L (10.6MB)	41	7.85
CRAW (16.4MB) + JPEG L (10.6MB)	78	8.90
RAW (36.1MB) + HEIF L (13.4MB)	41	17.65
CRAW (16.4MB) + HEIF L (13.4MB)	90	32.23

2. Sony SF-G Tough UHS-II

Sony’s Tough series are 18 times stronger than traditional memory cards cards. They are bend proof to 180N, drop-proof to 5 meters, waterproof to a depth of 5 meters for up to 72 hours (IPX8 rating) and dust proof with an IP6X rating.

These cards feature a one-piece ribless structure and no lock switch. They are also X-ray proof, magnet proof, anti-static and temperature proof.

If you aren’t very good at looking after your cards or you accidentally leave them in pockets that go through the wash, then they might be an option for you.

Please note that these cards are a little thicker than other memory cards and can be a tight fit in the R7’s memory card slots. We would only recommend these cards if you really require the extra protection that they provide.

• Bus speed: UHS-II
• Video speed class: V90
• Capacities: 32GB (SDHC), 64GB, 128GB, 256GB (SDXC)
• Read speed: 300 MB/s
• Write speed: 299 MB/s

In-Camera Speed / Buffer Test Results

When shooting in RAW the actual R7 in-camera write speed is around 185 MB/s.

Here are our complete in-camera speed / buffer test results when using a 64GB Sony SF-G Tough UHS-II memory card in Hi+ Drive Mode using the Electronic Shutter (30 FPS).

Image Type & Size	Shots Before Hitting Buffer	Time to Clear Buffer (Seconds)
RAW (36.1MB *)	41	6.23
CRAW (16.4MB *)	83	7.40
JPEG L (10.6MB *)	88	7.66
HEIF L (13.4MB *)	104	12.33
RAW (36.1MB) + JPEG L (10.6MB)	41	7.86
CRAW (16.4MB) + JPEG L (10.6MB)	78	8.91
RAW (36.1MB) + HEIF L (13.4MB)	41	17.65
CRAW (16.4MB) + HEIF L (13.4MB)	90	32.20

3. Delkin Devices POWER UHS-II

Delkin Devices design and support their memory cards in the USA.

The Power cards have been built specifically for extreme conditions and are protected against water, shock, and x-rays. They also feature built-in error correction and wear leveling.

Each card is backed by a Lifetime Warranty and Delkin’s American-based customer support team.

• Bus speed: UHS-II
• Video speed class: V90
• Capacities: 32GB (SDHC), 64GB, 128GB, 256GB (SDXC)
• Read speed: 300 MB/s
• Write speed: 250 MB/s

In-Camera Speed / Buffer Test Results

When shooting in RAW the actual R7 in-camera write speed is around 183MB/s.

Here are our complete in-camera speed / buffer test results when using a 64GB Delkin Devices POWER UHS-II memory card in Hi+ Drive Mode using the Electronic Shutter (30 FPS).

Image Type & Size	Shots Before Hitting Buffer	Time to Clear Buffer (Seconds)
RAW (36.1MB *)	41	6.45
CRAW (16.4MB *)	83	8.56
JPEG L (10.6MB *)	88	8.25
HEIF L (13.4MB *)	104	12.48
RAW (36.1MB) + JPEG L (10.6MB)	41	8.68
CRAW (16.4MB) + JPEG L (10.6MB)	76	8.63
RAW (36.1MB) + HEIF L (13.4MB)	41	19.02
CRAW (16.4MB) + HEIF L (13.4MB)	90	33.05

4. Lexar Professional 2000X UHS-II

Lexar have been in the memory card business for many years, although in recent years they have been bought out by another company and their reliability isn’t what it used to be unfortunately.

• Bus speed: UHS-II
• Video speed class: V90
• Capacities: 32GB (SDHC), 64GB, 128GB, 256GB (SDXC)
• Read speed: 300 MB/s
• Write speed: 260 MB/s

In-Camera Speed / Buffer Test Results

When shooting in RAW the actual R7 in-camera write speed is around 183 MB/s.

Here are our complete in-camera speed / buffer test results when using a 64GB Lexar Professional 2000X UHS-II memory card in Hi+ Drive Mode using the Electronic Shutter (30 FPS).

Image Type & Size	Shots Before Hitting Buffer	Time to Clear Buffer (Seconds)
RAW (36.1MB *)	41	6.45
CRAW (16.4MB *)	74	6.25
JPEG L (10.6MB *)	86	7.28
HEIF L (13.4MB *)	102	11.83
RAW (36.1MB) + JPEG L (10.6MB)	39	8.78
CRAW (16.4MB) + JPEG L (10.6MB)	75	9.35
RAW (36.1MB) + HEIF L (13.4MB)	41	19.75
CRAW (16.4MB) + HEIF L (13.4MB)	87	33.98

5. Transcend SD 700S UHS-II

The Transcend SD 700S UHS-II memory cards are shockproof, X-ray proof, and waterproof.

They are able to withstand static and temperatures from -13 to 185°F.

Transcend’s free RecoveRx software is available to help recover accidentally deleted content, including photos, documents, music, and videos.

• Bus speed: UHS-II
• Video speed class: V90
• Capacities: 32GB (SDHC), 64GB (SDXC)
• Read speed: 285 MB/s
• Write speed: 180 MB/s

In-Camera Speed / Buffer Test Results

When shooting in RAW the actual R7 in-camera write speed is around 182 MB/s.

Here are our complete in-camera speed / buffer test results when using a 64GB Transcend SD 700S UHS-II memory card in Hi+ Drive Mode using the Electronic Shutter (30 FPS).

Image Type & Size	Shots Before Hitting Buffer	Time to Clear Buffer (Seconds)
RAW (36.1MB *)	42	6.65
CRAW (16.4MB *)	75	6.70
JPEG L (10.6MB *)	88	7.51
HEIF L (13.4MB *)	103	11.93
RAW (36.1MB) + JPEG L (10.6MB)	39	8.76
CRAW (16.4MB) + JPEG L (10.6MB)	76	10.55
RAW (36.1MB) + HEIF L (13.4MB)	41	19.85
CRAW (16.4MB) + HEIF L (13.4MB)	88	34.98

6. Ritzgear Video Pro UHS-II

• Bus speed: UHS-II
• Video speed class: V90
• Capacities: 64GB, 128GB, 256GB (SDXC)
• Read speed: 280 MB/s
• Write speed: 250 MB/s

In-Camera Speed / Buffer Test Results

When shooting in RAW the actual R7 in-camera write speed is around 181 MB/s.

Here are our complete in-camera speed / buffer test results when using a 64GB Ritzgear Video Pro UHS-II memory card in Hi+ Drive Mode using the Electronic Shutter (30 FPS).

Image Type & Size	Shots Before Hitting Buffer	Time to Clear Buffer (Seconds)
RAW (36.1MB *)	41	6.41
CRAW (16.4MB *)	84	7.65
JPEG L (10.6MB *)	89	7.93
HEIF L (13.4MB *)	103	12.73
RAW (36.1MB) + JPEG L (10.6MB)	39	8.25
CRAW (16.4MB) + JPEG L (10.6MB)	76	8.98
RAW (36.1MB) + HEIF L (13.4MB)	41	18.90
CRAW (16.4MB) + HEIF L (13.4MB)	86	32.32

7. Hoodman Steel 2000x UHS-II

• Bus speed: UHS-II
• Video speed class: V90
• Capacities: 64GB, 128GB (SDXC)
• Read speed: 300 MB/s
• Write speed: 260 MB/s

In-Camera Speed / Buffer Test Results

When shooting in RAW the actual R7 in-camera write speed is around 177 MB/s.

Here are our complete in-camera speed / buffer test results when using a 64GB Hoodman Steel 2000x UHS-II memory card in Hi+ Drive Mode using the Electronic Shutter (30 FPS).

Image Type & Size	Shots Before Hitting Buffer	Time to Clear Buffer (Seconds)
RAW (36.1MB *)	40	6.23
CRAW (16.4MB *)	74	6.80
JPEG L (10.6MB *)	85	7.53
HEIF L (13.4MB *)	102	12.26
RAW (36.1MB) + JPEG L (10.6MB)	39	8.16
CRAW (16.4MB) + JPEG L (10.6MB)	74	9.35
RAW (36.1MB) + HEIF L (13.4MB)	41	18.53
CRAW (16.4MB) + HEIF L (13.4MB)	86	32.65

8. PNY X-PRO 90 UHS-II

• Bus speed: UHS-II
• Video speed class: V90
• Capacities: 64GB, 128GB, 256GB (SDXC)
• Read speed: 300 MB/s
• Write speed: 280 MB/s

In-Camera Speed / Buffer Test Results

When shooting in RAW the actual R7 in-camera write speed is around 174 MB/s.

Here are our complete in-camera speed / buffer test results when using a 64GB PNY X-PRO 90 UHS-II memory card in Hi+ Drive Mode using the Electronic Shutter (30 FPS).

Image Type & Size	Shots Before Hitting Buffer	Time to Clear Buffer (Seconds)
RAW (36.1MB *)	40	6.58
CRAW (16.4MB *)	79	7.33
JPEG L (10.6MB *)	90	8.15
HEIF L (13.4MB *)	104	12.20
RAW (36.1MB) + JPEG L (10.6MB)	41	8.91
CRAW (16.4MB) + JPEG L (10.6MB)	78	9.83
RAW (36.1MB) + HEIF L (13.4MB)	41	18.81
CRAW (16.4MB) + HEIF L (13.4MB)	89	33.20

9. ProGrade V90 UHS-II

The ProGrade V90 cards are also built for extreme conditions. They are shockproof and X-ray proof, and the built-in write protect switch will help to safeguard your content from being accidentally erased. They are able to withstand temperatures from -13 to 185°F.

• Bus speed: UHS-II
• Video speed class: V90
• Capacities: 64GB, 128GB, 256GB, 512GB (SDXC)
• Read speed: 300 MB/s
• Write speed: 250 MB/s

In-Camera Speed / Buffer Test Results

When shooting in RAW the actual R7 in-camera write speed is around 167 MB/s.

Here are our complete in-camera speed / buffer test results when using a 64GB ProGrade V90 UHS-II memory card in Hi+ Drive Mode using the Electronic Shutter (30 FPS).

Image Type & Size	Shots Before Hitting Buffer	Time to Clear Buffer (Seconds)
RAW (36.1MB *)	40	6.80
CRAW (16.4MB *)	75	7.05
JPEG L (10.6MB *)	87	7.60
HEIF L (13.4MB *)	105	12.43
RAW (36.1MB) + JPEG L (10.6MB)	39	8.78
CRAW (16.4MB) + JPEG L (10.6MB)	75	10.20
RAW (36.1MB) + HEIF L (13.4MB)	41	19.55
CRAW (16.4MB) + HEIF L (13.4MB)	89	33.31

10. SanDisk Extreme Pro UHS-II

It’s hard to go wrong with the SanDisk Extreme Pro UHS-II cards. They are fast and reliable and will have no difficulties clearing the R7’s buffer after a long burst of shots.

• Bus speed: UHS-II
• Video speed class: V90
• Capacities: 32GB (SDHC), 64GB, 128GB (SDXC)
• Read speed: 300 MB/s
• Write speed: 260 MB/s

In-Camera Speed / Buffer Test Results

When shooting in RAW the actual R7 in-camera write speed is around 166 MB/s.

Here are our complete in-camera speed / buffer test results when using a 64GB SanDisk Extreme Pro UHS-II memory card in Hi+ Drive Mode using the Electronic Shutter (30 FPS).

Image Type & Size	Shots Before Hitting Buffer	Time to Clear Buffer (Seconds)
RAW (36.1MB *)	41	7.15
CRAW (16.4MB *)	75	6.50
JPEG L (10.6MB *)	86	7.58
HEIF L (13.4MB *)	104	12.70
RAW (36.1MB) + JPEG L (10.6MB)	39	8.96
CRAW (16.4MB) + JPEG L (10.6MB)	74	10.20
RAW (36.1MB) + HEIF L (13.4MB)	41	19.15
CRAW (16.4MB) + HEIF L (13.4MB)	86	33.23

11. Sony SF-M Tough UHS-II

The Sony SF-M Tough memory cards are similar to the more expensive SF-G Tough version, but these are rated V60 for video and their read speed has been cut to 277MB/s and the write speed to 150MB/s.

These cards also include a limited 5-Year warranty and file rescue software. There’s also an SD Scan Utility included that helps you to check the condition of your memory card.

Please note that these cards are a little thicker than other memory cards and can be a tight fit in the R7’s memory card slots. We would only recommend these cards if you really require the extra protection that they provide.

• Bus speed: UHS-II
• Video speed class: V60
• Capacities: 32GB (SDHC), 64GB, 128GB, 256GB (SDXC)
• Read speed: 277 MB/s
• Write speed: 150 MB/s

In-Camera Speed / Buffer Test Results

When shooting in RAW the actual R7 in-camera write speed is around 120 MB/s.

Here are our complete in-camera speed / buffer test results when using a 64GB Sony SF-M Tough UHS-II memory card in Hi+ Drive Mode using the Electronic Shutter (30 FPS).

Image Type & Size	Shots Before Hitting Buffer	Time to Clear Buffer (Seconds)
RAW (36.1MB *)	40	10.20
CRAW (16.4MB *)	76	8.33
JPEG L (10.6MB *)	87	7.55
HEIF L (13.4MB *)	103	12.06
RAW (36.1MB) + JPEG L (10.6MB)	39	13.15
CRAW (16.4MB) + JPEG L (10.6MB)	75	14.85
RAW (36.1MB) + HEIF L (13.4MB)	41	23.30
CRAW (16.4MB) + HEIF L (13.4MB)	87	38.63

12. Sony SF-M UHS-II

Although not as tough as the Sony Tough cards, these SF-M cards are still resistant to water, dust, temperature, UV, X-rays, and magnets.

These cards also include a limited 5-Year warranty and file rescue software, along with the SD Scan Utility that checks the condition of your memory card.

• Bus speed: UHS-II
• Video speed class: V60
• Capacities: 32GB (SDHC), 64GB, 128GB, 256GB (SDXC)
• Read speed: 277 MB/s
• Write speed: 150 MB/s

In-Camera Speed / Buffer Test Results

When shooting in RAW the actual R7 in-camera write speed is around 120 MB/s.

Here are our complete in-camera speed / buffer test results when using a 64GB Sony SF-M UHS-II memory card in Hi+ Drive Mode using the Electronic Shutter (30 FPS).

Image Type & Size	Shots Before Hitting Buffer	Time to Clear Buffer (Seconds)
RAW (36.1MB *)	40	10.20
CRAW (16.4MB *)	76	8.33
JPEG L (10.6MB *)	87	7.55
HEIF L (13.4MB *)	103	12.06
RAW (36.1MB) + JPEG L (10.6MB)	39	13.15
CRAW (16.4MB) + JPEG L (10.6MB)	75	14.85
RAW (36.1MB) + HEIF L (13.4MB)	41	23.30
CRAW (16.4MB) + HEIF L (13.4MB)	87	38.63

13. ProGrade V60 UHS-II

The ProGrade V60 cards are similar to their V90 bigger brother except for the slower write and read speeds.

• Bus speed: UHS-II
• Video speed class: V60
• Capacities: 64GB, 128GB, 256GB (SDXC)
• Read speed: 250 MB/s
• Write speed: 130 MB/s

In-Camera Speed / Buffer Test Results

When shooting in RAW the actual R7 in-camera write speed is around 110 MB/s.

Here are our complete in-camera speed / buffer test results when using a 64GB ProGrade V60 UHS-II memory card in Hi+ Drive Mode using the Electronic Shutter (30 FPS).

Image Type & Size	Shots Before Hitting Buffer	Time to Clear Buffer (Seconds)
RAW (36.1MB *)	39	11.05
CRAW (16.4MB *)	76	9.51
JPEG L (10.6MB *)	87	7.88
HEIF L (13.4MB *)	102	12.03
RAW (36.1MB) + JPEG L (10.6MB)	39	14.10
CRAW (16.4MB) + JPEG L (10.6MB)	75	16.18
RAW (36.1MB) + HEIF L (13.4MB)	41	24.25
CRAW (16.4MB) + HEIF L (13.4MB)	87	40.55

14. Lexar Professional 1667X UHS-II

The Lexar Professional 1667X is basically a slower version of the 2000X and it only supports the V60 video speed class.

• Bus speed: UHS-II
• Video speed class: V60
• Capacities: 64GB, 128GB, 256GB (SDXC)
• Read speed: 250 MB/s
• Write speed: 120 MB/s

In-Camera Speed / Buffer Test Results

When shooting in RAW the actual R7 in-camera write speed is around 90 MB/s.

Here are our complete in-camera speed / buffer test results when using a 64GB Lexar Professional 1667X UHS-II memory card in Hi+ Drive Mode using the Electronic Shutter (30 FPS).

Image Type & Size	Shots Before Hitting Buffer	Time to Clear Buffer (Seconds)
RAW (36.1MB *)	39	14.01
CRAW (16.4MB *)	76	12.68
JPEG L (10.6MB *)	87	13.51
HEIF L (13.4MB *)	94	15.54
RAW (36.1MB) + JPEG L (10.6MB)	39	21.08
CRAW (16.4MB) + JPEG L (10.6MB)	74	25.01
RAW (36.1MB) + HEIF L (13.4MB)	41	31.41
CRAW (16.4MB) + HEIF L (13.4MB)	86	47.62

15. Sony SF-E UHS-II

The Sony SF-E UHS-II SD cards are the lowest cost UHS-II memory cards that Sony sells.

• Bus speed: UHS-II
• Video speed class: 64GB V30, 128GB and higher V60
• Capacities: 64GB, 128GB, 256GB (SDXC)
• Read speed: 270 MB/s
• Write speed: 64GB 70 MB/s, 128GB + 256GB 120 MB/s

In-Camera Speed / Buffer Test Results

When shooting in RAW the actual R7 in-camera write speed is around 69 MB/s.

Here are our complete in-camera speed / buffer test results when using a 64GB Sony SF-E UHS-II memory card in Hi+ Drive Mode using the Electronic Shutter (30 FPS).

Image Type & Size	Shots Before Hitting Buffer	Time to Clear Buffer (Seconds)
RAW (36.1MB *)	39	18.71
CRAW (16.4MB *)	77	16.60
JPEG L (10.6MB *)	88	11.95
HEIF L (13.4MB *)	103	13.70
RAW (36.1MB) + JPEG L (10.6MB)	38	24.06
CRAW (16.4MB) + JPEG L (10.6MB)	73	27.15
RAW (36.1MB) + HEIF L (13.4MB)	41	34.48
CRAW (16.4MB) + HEIF L (13.4MB)	86	52.92

16. Angelbird AV Pro Mk 2 V90 UHS-II

The Angelbird AV Pro Mk 2 V90 is also built for extreme conditions. These cards are protected against water, shock, x-rays, magnets, and temperatures ranging from -13 to 185°F.

The cards also feature ECC data reliability, wear leveling, and power management. There’s a built-in write-protect switch too.

The AV Pro Mk 2 comes with a limited 3-year warranty. However you must register the card on the Angelbird Personal Service Portal within 30 days after purchase using the included activation code to validate this.

• Bus speed: UHS-II
• Video speed class: V90
• Capacities: 32GB (SDHC), 64GB, 128GB, 256GB (SDXC)
• Read speed: 300 MB/s
• Write speed: 280 MB/s

In-Camera Speed / Buffer Test Results

When shooting in RAW the actual R7 in-camera write speed is around 68 MB/s. This is very slow for this cards write speed of 260 MB/s, so this card definitely has performance issues in the R7. It also underperformed in our R6 and R3 Memory Card tests.

Here are our complete in-camera speed / buffer test results when using a 64GB Angelbird AV Pro Mk 2 V90 UHS-II memory card in Hi+ Drive Mode using the Electronic Shutter (30 FPS).

Image Type & Size	Shots Before Hitting Buffer	Time to Clear Buffer (Seconds)
RAW (36.1MB *)	39	19.08
CRAW (16.4MB *)	74	21.68
JPEG L (10.6MB *)	87	17.12
HEIF L (13.4MB *)	94	21.30
RAW (36.1MB) + JPEG L (10.6MB)	38	27.31
CRAW (16.4MB) + JPEG L (10.6MB)	72	37.74
RAW (36.1MB) + HEIF L (13.4MB)	41	39.37
CRAW (16.4MB) + HEIF L (13.4MB)	84	66.93

UHS-I Memory Card Speed & Buffer Tests

If you don’t shoot many continuous bursts then you probably won’t need the fastest UHS-II cards, so you can save a little money by purchasing UHS-I cards instead.

That said, if you get impatient waiting for the files to copy over to your computer, then you might still wish to go with the faster UHS-II cards since these will allow you to copy files over to your computer roughly 3x faster than UHS-I cards providing you use a UHS-II card reader.

1. Delkin Devices Advantage UHS-I

Designed and supported in the USA, the Delkin Devices Advantage UHS-I memory card is protected against water, shock, and x-rays, and also features built-in error correction and wear leveling.

Each memory card is backed by a Lifetime Warranty and Delkin’s American-based customer support team.

Bus speed: UHS-I
Video speed class: V30
Capacities: 32GB (SDHC), 64GB, 128GB, 256GB,512GB, 1TB (SDXC)
Read speed: 100 MB/s
Write speed: 80 MB/s

In-Camera Speed / Buffer Test Results

When shooting in RAW the actual R7 in-camera write speed is around 78 MB/s.

Here are our complete in-camera speed / buffer test results when using a 64GB Delkin Devices Advantage UHS-I memory card in Hi+ Drive Mode using the Electronic Shutter (30 FPS).

Image Type & Size	Shots Before Hitting Buffer	Time to Clear Buffer (Seconds)
RAW (36.1MB *)	40	16.70
CRAW (16.4MB *)	75	15.05
JPEG L (10.6MB *)	86	10.11
HEIF L (13.4MB *)	102	12.81
RAW (36.1MB) + JPEG L (10.6MB)	39	22.46
CRAW (16.4MB) + JPEG L (10.6MB)	73	25.16
RAW (36.1MB) + HEIF L (13.4MB)	41	33.40
CRAW (16.4MB) + HEIF L (13.4MB)	85	50.42

2. Kingston Canvas Go! Plus UHS-I

The Kingston Canvas Go Plus UHS-I cards are protected against water, shock, vibration, x-rays, and temperature extremes.

Bus speed: UHS-I
Video speed class: V30
Capacities: 32GB (SDHC), 64GB, 128GB, 256GB, 512GB (SDXC)
Read speed: 170 MB/s
Write speed: 90 MB/s

In-Camera Speed / Buffer Test Results

When shooting in RAW the actual R7 in-camera write speed is around 76 MB/s.

Here are our complete in-camera speed / buffer test results when using a 64GB Kingston Canvas Go! Plus UHS-I memory card in Hi+ Drive Mode using the Electronic Shutter (30 FPS).

Image Type & Size	Shots Before Hitting Buffer	Time to Clear Buffer (Seconds)
RAW (36.1MB *)	39	16.75
CRAW (16.4MB *)	74	14.84
JPEG L (10.6MB *)	88	10.65
HEIF L (13.4MB *)	102	12.65
RAW (36.1MB) + JPEG L (10.6MB)	39	22.21
CRAW (16.4MB) + JPEG L (10.6MB)	75	25.26
RAW (36.1MB) + HEIF L (13.4MB)	41	33.33
CRAW (16.4MB) + HEIF L (13.4MB)	86	50.02

3. SanDisk Extreme Pro UHS-I

The SanDisk Extreme Pro UHS-I memory card is shockproof, X-ray proof, waterproof and can also withstand temperatures from -13 to 185°F.

Bus speed: UHS-I
Video speed class: V30
Capacities: 32GB (SDHC), 64GB, 128GB, 256GB,512GB, 1TB (SDXC)
Read speed: 170 MB/s
Write speed: 90 MB/s

In-Camera Speed / Buffer Test Results

When shooting in RAW the actual R7 in-camera write speed is around 74 MB/s.

Here are our complete in-camera speed / buffer test results when using a 64GB SanDisk Extreme Pro UHS-I memory card in Hi+ Drive Mode using the Electronic Shutter (30 FPS).

Image Type & Size	Shots Before Hitting Buffer	Time to Clear Buffer (Seconds)
RAW (36.1MB *)	39	17.33
CRAW (16.4MB *)	75	15.45
JPEG L (10.6MB *)	86	11.85
HEIF L (13.4MB *)	102	13.46
RAW (36.1MB) + JPEG L (10.6MB)	38	22.93
CRAW (16.4MB) + JPEG L (10.6MB)	73	28.65
RAW (36.1MB) + HEIF L (13.4MB)	41	33.85
CRAW (16.4MB) + HEIF L (13.4MB)	85	52.25

4. Transcend 500S UHS-I

The Transcend 500S UHS-I is shockproof, X-ray proof, and waterproof, while also being able to withstand static, plus temperatures from -13 to 185°F.

Bus speed: UHS-I
Video speed class: V30
Capacities: 8GB, 16GB, 32GB (SDHC), 64GB, 128GB (SDXC)
Read speed: 95 MB/s
Write speed: 60 MB/s

In-Camera Speed / Buffer Test Results

When shooting in RAW the actual R7 in-camera write speed is around 63 MB/s.

Here are our complete in-camera speed / buffer test results when using a 64GB Transcend 500S UHS-I memory card in Hi+ Drive Mode using the Electronic Shutter (30 FPS).

Image Type & Size	Shots Before Hitting Buffer	Time to Clear Buffer (Seconds)
RAW (36.1MB *)	39	20.66
CRAW (16.4MB *)	75	18.45
JPEG L (10.6MB *)	86	14.01
HEIF L (13.4MB *)	94	16.91
RAW (36.1MB) + JPEG L (10.6MB)	38	28.23
CRAW (16.4MB) + JPEG L (10.6MB)	72	34.56
RAW (36.1MB) + HEIF L (13.4MB)	41	40.10
CRAW (16.4MB) + HEIF L (13.4MB)	84	58.53

5. Lexar Professional 1066x UHS-I

The Lexar Professional 1066x UHS-I cards have been rigorously tested and designed to be resistant against water, shock, vibration, and x-Rays.

Bus speed: UHS-I
Video speed class: V30
Capacities: 32GB (SDHC), 64GB, 128GB, 256GB,512GB, 1TB (SDXC)
Read speed: 160 MB/s
Write speed: 120 MB/s

In-Camera Speed / Buffer Test Results

When shooting in RAW the actual R7 in-camera write speed is around 61 MB/s.

Here are our complete in-camera speed / buffer test results when using a 64GB Lexar Professional 1066x UHS-I memory card in Hi+ Drive Mode using the Electronic Shutter (30 FPS).

Image Type & Size	Shots Before Hitting Buffer	Time to Clear Buffer (Seconds)
RAW (36.1MB *)	39	21.16
CRAW (16.4MB *)	73	18.60
JPEG L (10.6MB *)	85	14.08
HEIF L (13.4MB *)	101	15.87
RAW (36.1MB) + JPEG L (10.6MB)	38	28.96
CRAW (16.4MB) + JPEG L (10.6MB)	71	31.91
RAW (36.1MB) + HEIF L (13.4MB)	41	39.93
CRAW (16.4MB) + HEIF L (13.4MB)	84	57.87

6. SanDisk Extreme UHS-I

The SanDisk Extreme UHS-I card is one of the most affordable cards that you can put in your R7. If you don’t shoot continuous bursts then this could be an option for you.

Bus speed: UHS-I
Video speed class: V30
Capacities: 64GB, 128GB, 256GB (SDXC)
Read speed: 150 MB/s
Write speed: 70 MB/s

In-Camera Speed / Buffer Test Results

When shooting in RAW the actual R7 in-camera write speed is around 61 MB/s.

Here are our complete in-camera speed / buffer test results when using a 64GB SanDisk Extreme UHS-I memory card in Hi+ Drive Mode using the Electronic Shutter (30 FPS).

Image Type & Size	Shots Before Hitting Buffer	Time to Clear Buffer (Seconds)
RAW (36.1MB *)	40	22.10
CRAW (16.4MB *)	78	19.22
JPEG L (10.6MB *)	90	14.25
HEIF L (13.4MB *)	105	15.27
RAW (36.1MB) + JPEG L (10.6MB)	39	28.92
CRAW (16.4MB) + JPEG L (10.6MB)	76	32.50
RAW (36.1MB) + HEIF L (13.4MB)	42	41.20
CRAW (16.4MB) + HEIF L (13.4MB)	87	59.33

7. Lexar Professional 633X UHS-I

The Lexar Professional 633X UHS-I card can withstand temperature extremes from -13 to 185°F. The built-in write protect switch will help to avoid accidentally deleting your images.

Bus speed: UHS-I
Video speed class: V30
Capacities: 32GB (SDHC), 64GB, 128GB, 256GB (SDXC)
Read speed: 95 MB/s
Write speed: 45 MB/s

In-Camera Speed / Buffer Test Results

When shooting in RAW the actual R7 in-camera write speed is around 36 MB/s.

Here are our complete in-camera speed / buffer test results when using a 64GB Lexar Professional 633X UHS-I memory card in Hi+ Drive Mode using the Electronic Shutter (30 FPS).

Image Type & Size	Shots Before Hitting Buffer	Time to Clear Buffer (Seconds)
RAW (36.1MB *)	39	37.88
CRAW (16.4MB *)	76	33.10
JPEG L (10.6MB *)	90	25.71
HEIF L (13.4MB *)	96	27.58
RAW (36.1MB) + JPEG L (10.6MB)	39	50.75
CRAW (16.4MB) + JPEG L (10.6MB)	75	56.05
RAW (36.1MB) + HEIF L (13.4MB)	41	63.76
CRAW (16.4MB) + HEIF L (13.4MB)	86	87.82

15 FPS Speed & Buffer Tests

All of our buffer tests are done using the Electronic Shutter at 30 FPS to ensure that we test the maximum write speed of each card.

However, since we know some of you might prefer to shoot at a more manageable 15 FPS (Drive Mode Hi) which is also the maximum speed if you are using the mechanical or elec. 1st-curtain shutter, we have also carried out our tests at 15 FPS.

We have only tested one memory card at 15 FPS, the Kingston Canvas React Plus UHS-II which is the fastest UHS-II card from our 30 FPS tests. Testing all of the cards again at 15 FPS would simply drive us crazy I’m afraid.

Kingston Canvas React Plus UHS-II

• Bus speed: UHS-II
• Video speed class: V90
• Capacities: 32GB (SDHC), 64GB, 128GB, 256GB (SDXC)
• Read speed: 300 MB/s
• Write speed: 260 MB/s

In-Camera Speed / Buffer Test Results

Here are our complete in-camera speed / buffer test results when using a 64GB Kingston Canvas React Plus UHS-II memory card and shooting in Drive Mode Hi with the Electronic Shutter (15 FPS). With the Mechanical Shutter or Electronic 1st-curtain you need to shoot in Drive Mode Hi + for 15 FPS.

Image Type & Size	Shots Before Hitting Buffer	Time to Clear Buffer (Seconds)
RAW (36.1MB *)	59	6.56
CRAW (16.4MB *)	188	6.73
JPEG L (10.6MB *)	198	6.93
HEIF L (13.4MB *)	140	10.38
RAW (36.1MB) + JPEG L (10.6MB)	52	8.60
CRAW (16.4MB) + JPEG L (10.6MB)	112	9.70
RAW (36.1MB) + HEIF L (13.4MB)	48	20.41
CRAW (16.4MB) + HEIF L (13.4MB)	95	32.90

RAW Burst Mode & Pre-Shooting

RAW Burst Mode allows you to take fast continuous shots in RAW image format, these are saved as a single file which you need to extract either in-camera or on your computer using Canon Digital Photo Professional.

With Pre-Shooting enabled the R7 will start capturing images as soon as you half press the shutter button for up to around 0.5 seconds before you fully press the shutter button.

If you want to make use of RAW Burst and Pre-Shooting we strongly recommend using one of the faster UHS-II cards. Both the Kingston Canvas React Plus and Sony SF-F Tough UHS-II cards will clear the buffer when full in around 10 seconds with RAW Burst and Pre-Shooting enabled.

The Angelbird AV Pro Mk 2 V90 UHS-II card was the slowest card from our UHS-II tests, this cleared the buffer in around 31 seconds, a full 21 seconds slower than the Kingston and Sony cards.

Recording to Multiple Cards

If you select the record option in the menu “Rec. to Multiple” then the same image type will be written to the memory card in both slot 1 and slot 2.

It’s important to note that the write speed will always be limited by the slowest card, so we would strongly recommend using the same card in both slots.

Providing you are using identical cards in both slots, there should not be a performance impact when recording to both cards.

With the Kingston Canvas React Plus UHS-II card in both slots and recording RAW at 30 FPS, the buffer still clears in 6.20 seconds, which is the same time as writing to a single card.

Recording Separately

If you select the record option in the menu “Rec. Separately” then you can write a different file format to slot 1 and slot 2.

So you could write RAW images to slot 1 and JPEG images to slot 2.

The buffer will however be limited to 41 shots which is the maximum when shooting RAW images to a fast UHS-II card like the Kingston Canvas React Plus.

Again, just like recording the same file to multiple cards, there is no performance impact providing you are using identical cards in both memory card slots.

Memory Cards for Recording Video

We’d recommend using a V60 or V90 rated UHS-II memory card for shooting video with the R7.

A minimum rating of V60 will make sure that you are able to comfortably shoot in all of the video modes that the R7 supports.

We’d recommend a card like the Sony SF-M UHS-II card which is V60 rated and reasonably priced. (B&H Photo | Amazon).

A V90 card won’t provide you with any benefits over V60 for video with the R7 unless you can make use of this additional speed in a camera that requires it.

Here is Canon’s list of supported memory cards depending on the video format you are recording in.

What Size Memory Card Do You Need?

How long is a piece of string? It really depends on how and what you are shooting.

Stills Shooters

If you shoot a lot of sports or birds in flight, then you will probably be shooting in burst mode and will fill a 64GB card very quickly, especially if you are shooting in RAW. We’d recommend going with a 128GB card if this is you.

If you don’t shoot a lot of bursts then 64GB or even 32GB might be large enough.

If you are after an exact number then following table from the Canon R7 Manual should help. These figures are based on a 32GB memory card. So for a 64GB card just double the number of available shots, for a 128GB card multiply by 4x.

Video Shooters

For video shooters you’ll probably want to go with the largest card that you can afford.

You’ll definitely want to avoid 32GB and smaller cards because these SDHC cards use the FAT 32 file system and you’ll find that your video files get broken up into 4GB chunks which makes for a lot more work in post.

So stick with the larger SDXC cards.

For exact recording times the following table from the Canon R7 Manual should help.

Estimated Recording Times with Canon Log : OFF, HDR PQ : OFF

Estimated Recording Times with Canon Log : ON, HDR PQ : ON

Memory Card Readers

If you don’t have a UHS-II card reader in your computer then you’ll want to purchase an external reader if you want to take advantage of the faster transfer speeds.

Here are our recommended UHS-II memory card readers for the Canon R7.

Sony MRW-S1 UHS-II SD Memory Card Reader

The MRW-S1 card reader supports the USB 3.1 Gen 1 (5 Gb/s) bus to get the most from the high-performance UHS-II memory cards. It supports both Mac and Windows and is also backwards compatible with UHS-I memory cards.

Kingston Mobilelite Plus SD Card Reader

The Kingston Mobilelite Plus SD Card Reader supports the USB 3.2 Gen 1 (5 Gb/s) and delivers speeds up to 10x faster than USB 2.0. Both Windows and Mac are supported and it’s also backwards compatible with UHS-I SD cards.

Apple USB Type-C to SD Card Reader

The Apple USB Type-C to SD Card Reader supports USB 3.1 / 3.2 Gen 1 (5 Gb/s) and is compatible with a variety of notebooks and third-generation iPad Pros. It’s also backwards compatible with UHS-I SD cards.

Memory Card Storage

We’d strongly recommend purchasing a tough waterproof case to keep your precious images safe, especially if you shoot weddings! But then hopefully you are taking multiple backups throughout the day anyway!

Here are our recommended memory card storage cases for keeping your Canon R7 images safe.

Ruggard Leda Memory Card Case

This case holds 12 SD (UHS-I & UHS-II) & 12 microSD cards. It features a molded-rubber lining, a polycarbonate exterior shell, and a snap closure. It also includes a carabiner.

The protective molded-rubber lining make sure each card is secure in the case and isn’t going to bounce around.

The snap closure provides a weatherproof seal to help protect your valuable images.

Summary

Our recommended memory card for the Canon R7 is the Kingston Canvas React Plus UHS-II (B&H Photo | Amazon).

The Kingston Canvas React Plus UHS-II memory card came joint top in our speed/buffer tests alongside the Sony SF-G Tough UHS-II card, although the Sony card will typically cost you around 40% more.

We’d recommend the Kingston Canvas React Plus UHS-II for both stills shooting and video shooting.

If you only shoot video and need the largest capacity that you can afford, then you could save some money by purchasing a slower V60 memory card which should still support all of the R7’s bitrates. Such as the Sony SF-M UHS-II memory card (B&H Photo | Amazon).

Please do let us know down in the comments below if you found this guide helpful, or perhaps you’d like to recommend another memory card for us to test.

Also if you have any feedback whether positive or negative on any of the memory cards in this guide, then we’d also love to hear from you.

If you found this guide helpful then you might also find our Canon R6 Memory Card Guide and Canon R3 Memory Card Guide helpful if you own these cameras as well.

Canon R7 Guides