A "stupid" question about the brightness and aperture

Started Sep 27, 2012 | Discussions thread
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waynes
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A "stupid" question about the brightness and aperture
Sep 27, 2012

F2 is as bright in a small sensor as in a big sensor. Right?

If so, for example, LX5 should have the same brightness at F4, as K5 at F4 and D800 at F4. I know the deepness of the field is different. Thus, LX5 and the other PS cameras have a "advantage": you can leave LX5 at F4 (F2 is the max aperture, F4 should be the best aperture resolution wise), and everything should be focused.

In dark situation, LX5 F4 should be much easier to hand hold than D800 F11. Right?
D800 might have better high ISO, but...

Nikon D800 Panasonic Lumix DMC-LX5 Pentax K-5
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