Full Frame (5D3) or APS-C?

Started Mar 4, 2012 | Discussions thread
Peter 13 Veteran Member • Posts: 8,301
Re: Full Frame (5D3) or APS-C?

CarVac wrote:

There is definitely no significant light "loss" when using an f/1.4 lens on APS-C. When using my manual 50/1.4 on my 60D, it definitely gets a full stop more light at f/1.4 than at f/2. The camera has no idea what aperture my lens is set to, so it can't possibly be compensating in software.

Try an AF f/1.4 lens unscrewed a bit, and then screwed.

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