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#281
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"Bart van der Wolf" wrote in message ...
"Crownfield" wrote in message ... SNIP what about microlenses that are adjusted for the angle of the light rays? could these correct for the angle of incidence? That should help, but I can imagine it is difficult to shape the lenses in such a way that they can accomodate different exit pupils equally good. Bart Exit pupil position is pretty stable among SLR lenses, at least for the Nikon F mount. Its shorter than you would think for telephotos (to avoid upper rim ray vignetting), and much longer than you would think for wideangles. Brian www.caldwellphotographic.com |
#282
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In rec.photo.equipment.35mm Gene Palmiter wrote:
Isn't there some potential problems with the angle of the light hitting the sensor? Can the mount effect that? No, that depends on the lens design. -- Sander +++ Out of cheese error +++ |
#283
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Regarding angle of projection on CDD or CMOS sensor: Olympus
was explaining this also on their pages as they presented the design of their 4/3 lenses. There is clearly an issue here. CCD/CMOS cells have some depth and light will be projected partly against their walls. This is surely corrected somehow in the hardware (maybe even by the use of micro lenses?) or in the firmware by correcting the exposure values of corner pixels. heh... thinking of this, how about the georgetteous foveon? ;- if a single-plane ccd/cmos/lbcast/whatever sensor has issues with light ray angles, then how about the much 'deeper' three-layer thing? -- deejay |
#284
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Regarding angle of projection on CDD or CMOS sensor: Olympus
was explaining this also on their pages as they presented the design of their 4/3 lenses. There is clearly an issue here. CCD/CMOS cells have some depth and light will be projected partly against their walls. This is surely corrected somehow in the hardware (maybe even by the use of micro lenses?) or in the firmware by correcting the exposure values of corner pixels. heh... thinking of this, how about the georgetteous foveon? ;- if a single-plane ccd/cmos/lbcast/whatever sensor has issues with light ray angles, then how about the much 'deeper' three-layer thing? -- deejay |
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