Birds EF100-400 with Vitrox Speed booster - bird photography

[ctitanic]

• Canon EOS R7
• EF100-400mm f/4.5-5.6L IS II USM
• 284.0 mm
• ƒ/4
• 1/640 sec
• ISO 250

 

[Only RF]

I looked it up but I didn't find much info. What does a speed booster actually do?

 

[ctitanic]

I looked it up but I didn't find much info. What does a speed booster actually do?

You gain one stop of light and change the crop factor by 0.71, that means that
400 x 1.6 = 640
640 x 0.71 = 454

454 is closer to the original value of 400.

In another words, it makes EF lenses to behave in an ASP-C camera almost in the same way as in a full frame camera and gaining some light in the process.

 

[ctitanic]

Here is a video that explains it better

Must Have Accessory for the Canon M50! VILTROX Speed Booster

Quick look at a must have accessory for the Canon M50 called the VILTROX speed booster! ***** Checkout Skillshare and get your first 2 months free to try it ...

www.youtube.com

I have the version for RF so it converts from EF to RF.

 

[Only RF]

Thanks