Oh that's a useful bit of techknow. That lenses for digital have optics to collimate the light, That must make the optics of my 14 to 24 lens pretty awesome!
Herschel
On Mon, Mar 23, 2015 at 10:37 AM Randy Little <randyslittle@xxxxxxxxx> wrote:
The image quality can suffer because the angle the light strikes the sensor. With film it didn't really matter that the light was hitting at angles. With a sensor when the light is hitting at a strong enough angle it occludes it from the photosites farther out on the sensor. That being said it really only matters with wide angle lens and there are fixes that can be done in software to account for the falloff. You can also profile the lens via a diffuse cap and then software. I use a 28mm Zeiss G lens on my Nex 7 and it fringes purple like crazy but I fix it in post since the lens is insanely awesome everywhere else.
Digital lens are telecentric in design which is why they are longer at the same focal length. They use Aspherical elements to collimate the light so it strikes the sensor straight or nearly straight on.On Mon, Mar 23, 2015 at 12:09 PM, Dan Mitchell <danmdan3842@xxxxxxxxx> wrote:Having recently acquired a Fuji XE-1 body only I need lenses, possibly no more than two. My question today is - are re-cycled film camera lenses as usable in front of a digital sensor as they once were in front of film - or does the image quality suffer ? In particular I’m looking at one of 35 mm size (50 mm equiv.), plus a small wide-to-medium zoom. And not expensive lenses like Leica, more Pentax and Canon screw fitting are within my price range.
Dan Mitchell
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Dan Mitchell
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