Extenders

[Only RF]

I've watched a few of his videos and I like his explanations. When I got my R6III I took the 1.4 off the 100-500 and often pushed cropping a bit too much. I put it back on a few months ago. I just came across this video today.

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[Si Keen]

My 1.4 TC sits permanently on my RF600 f4, and produces great images, not so much on my 100-500. I often use 2x on the 600mm especially shooting small birds with the R1 as you can't crop as aggressively, Plus high ISO isn't an issue on the R1 . I only tend to use the 1.4 if I'm shooting the R5 mkii as although it handles noise well its not in the same league as the R1

 

[Only RF]

My 1.4 TC sits permanently on my RF600 f4, and produces great images, not so much on my 100-500. I often use 2x on the 600mm especially shooting small birds with the R1 as you can't crop as aggressively, Plus high ISO isn't an issue on the R1 . I only tend to use the 1.4 if I'm shooting the R5 mkii as although it handles noise well its not in the same league as the R1

I had an EF 400 DO II at one time. While the 100-500 is a great lens it is tough to beat a prime. I was considering a 2X but not anymore, unless I had a prime.

 

[Archibald]

I've thought about getting the 1.4x for my 100-500L, but haven't done it. The online reviews are not that positive for the 1.4x/100-500mm combo. I figure the main optical job of the 1.4x is putting more pixels on the subject. Since I use the lens on my R7, I have more than enough pixels. So I crop instead, and that works well.

Still not sure though, as the 1.4x might help with focusing.

 

[Only RF]

I like his videos as well. Sorry about the ads.

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I've always done really well with the 100-500 and 1.4 on a FF. Fast AF and good IQ I think. OK on the R7 but my keeper rate really dropped so I stopped using it. I sold the R7 last year.

These are all cropped between 25 and 50%

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[RickyRed]

I've thought about getting the 1.4x for my 100-500L, but haven't done it. The online reviews are not that positive for the 1.4x/100-500mm combo. I figure the main optical job of the 1.4x is putting more pixels on the subject. Since I use the lens on my R7, I have more than enough pixels. So I crop instead, and that works well.

Still not sure though, as the 1.4x might help with focusing.

Using 100-500 with the R7. You have an effective 200-800 reach.