Focal length 35mm equivalent, but not F-stop?

Started Jul 24, 2014 | Discussions thread
mostlyboringphotog Veteran Member • Posts: 9,000
Re: Focal length 35mm equivalent, but not F-stop?

pavi1 wrote:

Chikoo wrote:

All camera manufacturer when they publish technical specification of their camera lens publish the focal length and it's equivalent in 35mm. But the same is not done for F-stop. Why?

Because it is Babel.

May be for the fixed lens cams but the lens manufacturer would not list FL in equivalent unless they want to lose their prestige.

The reason the equivalent f-stop is problematic is because let's say f/2 4/3 lens is equivalent to f/4 on FF but if you attach f/2 4/3 lens on FF body, is it a f/2 lens or f/4 lens?

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