Dag T <[EMAIL PROTECTED]> wrote:
Also, the chips have dielectric filters on the sensors separating the colours. These filters are very angular dependent. Traditional wide angles tend to focus light toward the edges of the film at a sharp angle, and are therefore not very suitable for digital cameras.
This is a myth. Long ago debunked.
1) The angle sensitivity of CCD and CMOS chips is nowhere near enough to
be troubled by the mild angles possible with current 35mm lens mounts
(62-66 degrees). See Canon EOS-1Ds for demonstration.
1Ds has some nice solutions, yes. From what I understand they have some microlenses.
Do you known then, how they made the filters?
2) Single lens reflex cameras don't use *traditional* wide angles, they use retrofocus designs, which don't produce angles any greater than a normal (50mm) lens.
There are different types having different problems. You could say that the ones having most vignetting have largest problems here as well, or you could just look have far toward the film plane the rear lens element stretches. If Pentax skips the 15 f/3.5 I would expect a new one with a different design.
DagT
