Hey all... I was just looking to take a "white-wall" out-of-focus
picture to look for dust on my -DS. When I examined the RAW file (with
linear curve, even) it appears that's there's fairly obvious vignetting on
the photo. I measured it, and the difference between the linear intensity
at the center and the corner is almost magically around 1.4-1.5. It's
prevalent on all my lenses (most older), but also on the kit 18-55 that
came with it. I even tried it with just a 2x teleconverter, and *no*
lens. The latter two weren't quite as pronounced, but there still wasn't
an even exposure
Is this a normal and acceptable amount of falloff? I guess it's
just illustrating how sensitive the CCD is to the *angle* the light is
coming in from, no?
Just wondering if other's had noticed the same thing.
-Cory
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* Cory Papenfuss *
* Electrical Engineering candidate Ph.D. graduate student *
* Virginia Polytechnic Institute and State University *
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