A number of you were asking about this, so here you go:
Depending on whether you use 1/2 or 1/3 stop increments, there are two different answers. But it can be f/5.6 @ 400mm if you want it to be.
- A
Answered: What is the Canon RF 100-500mm F4.5-7.1 L IS USM Lens's Max Aperture at 400mm?
Answered: What is the Canon RF 100-500mm F4.5-7.1 L IS USM Lens's Max Aperture at 400mm? — The-Digital-Picture.com
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Depending on whether you use 1/2 or 1/3 stop increments, there are two different answers. But it can be f/5.6 @ 400mm if you want it to be.
- A