i used a half century old lens - the canon FL 55mm f/1.2, which i believe is reasonably close to symmetrical though not as close as the even older 58mm normals. i imagine m-lenses would show the effect you talk about to a much larger extent due to the closer flange distance. this is the one reason the m9 has offset microlenses. what you said was that µ4/3 can\'t do f/1.4, which i think is somewhat of a missrepresentation. i doubt µ4/3 can really do f/1.4 using a leica m summilux wide angle lens, but it seems to work just fine for me with normal length f/1.4 dslr.
theSuede wrote:
Sebboh:
If you try this with modern very retrofocal lenses, the effect is diminished by a large margin. With a higher retrofocal effect, angle of incidence to the sensor diminishes (even the aperture edge relative angles) - you distance the exit pupil from the plane of focus (the sensor).
But as we are in the \"ALT\" section, my example was using a standard lens like the nearly symmetrical Takumar 50F/1.4 or any other standard wider \"alt\" lens. Wide large-aperture Leica M-lenses usually give the worst aperture-to-exposure ratios of all.
Jan 27, 2010 at 11:33 AM
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