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Forum: Pentax SLR Lens Discussion
03-29-2012, 10:13 AM
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You're forgetting that with digital sensor the light needs to hit the sensor as straight as possible when you make the register smaller the angle increase so it gets very difficult to get the edges sharp with wide angle lenses, you can see this with the NEX cameras.
So you need to find a goood balance, most likely taking the focal length of the normal lens might work quite well.
For APS-C that would mean a register of around 30mm.
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Forum: Pentax SLR Lens Discussion
03-28-2012, 07:55 PM
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Edges are the problem with most lenses on the NEX, the register is so short that the angle is to steep in the corners for the micro lenses on the sensor to redirect the light correctly on the pixels...
Ricoh had to use a special micro lenses on their Leica M-mount module but it seems to get decent result out of it.
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Forum: Pentax SLR Lens Discussion
03-28-2012, 07:00 AM
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Pentax make 8.5mm f/1.9 lens with a leaf shutter, how cool is that! ... sadly it isn't considered a wide angle for the format. :(
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