Archived posting to the Leica Users Group, 2003/06/27
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Hi Austin, Ahhhhh, so even a retrofocal WA's "mostly perpendicular" is still not perpendicular enough out at the edges of a full-frame DSLR. So I suppose it would vignette less than a non-retrofocal (e.g., rangefinder) WA lens, but would still have some vignetting. Thanks for clarifying. I'm slow, but I get there. - -Aaron At 01:26 PM 6/27/2003, Austin wrote: >The angle of light at the edges is NOT perpendicular to the film plane, >which for film, is not an issue...but for a digital sensor, which has the >sensing element, basically recessed into a square hole...where the sides of >the hole cut-off the light getting to the sensing element. It's technically >called "well depth". > >This is also one reason why Contax and Canon had to increase the size of >their lense mounts, and why Nikon does not have a full frame sensor...and >the new 14M Kodak camera does not perform well at all with wide angle >lenses. - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html