On Tue, 10 Aug 2004 22:00:25 +0900, Karen Nakamura <[EMAIL PROTECTED]> wrote/replied to:
> >Photodo and most other MTF measurements are flawed when you try to >compare a f/2.8 lens against an f/4 or f/5.6 lens. They test the >lenses wide open and in that case, of course the f/2.8 lens at f/2.8 >will have more problems than an f/4 lens at f/4. No, they test the lenses at different apertures and focal lengths. Just compare them at the same apertures, you might be shocked. But in any case your statement about gaining 3 stops seems a bit lame if your sharpness is way down and your DOF is way shallow. -- Norton - all around good guy * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
