f/1.8 on m4/3, ASP-C, FF; are they the same?

Started Nov 1, 2010 | Discussions thread
baxters
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Re: f/1.8 on m4/3, ASP-C, FF; are they the same?
In reply to redrunnertc, Nov 1, 2010

Yes, because the f1.8 number is basically obtained by dividing the focal length by the diameter of the lens elements. It doesn't care about the sensor size or type. You could be using an 8 inch wide daguerreotype glass plate and the f-stop is the same.

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