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"RE: Understanding Macro Lens Apertures (Micro-Nikkors)"
>The following mathematical formula is the actual definition >of Effective Aperture: >http://mysite.freeserve.com/nikonians/images/EffectiveAperture.jpg >where, >A = aperture >M = subject magnification >p = pupil magnification (exit pupil diameter/entrance >pupil diameter) The link seems to be dead. Does someone have the actual formula? I tried wikipedia but no luck.
--Camera <ˈkæ mə rə>, n. Device for taking pictures in bright light.http://www.flickr.com/photos/nantonos