why not f/1.2 by Sony?

Started May 14, 2013 | Discussions thread
tomtom50
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Re: why not f/1.2 by Sony?
In reply to forpetessake, May 16, 2013

forpetessake wrote:

You need to keep in mind that we are not talking about really fast apertures here. The f/1.2 on APS-C format is equivalent to just f/1.8 on FF -- hardly a superfast lens. Testing with focal reducers also seem to indicate there isn't a problem going up to f/1.0 on APS-C.

Can you cite a source? I had the opposite impression.

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