Quote:
Originally Posted by CAAD9
In regards to the distortions I am seeing, I suppose at A3 it may not be visible. However when I blow my photos up to full size on the screen, around the corners I notice that the straight lines such as building begin to be curved. Is this what you call vignetting?
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No, that's not vignetting. Vignetting is a falloff of illumination at the edges of the frame. Even good lenses may show vignetting when wide open.
It might be barrel or pincushion distortion you are seeing. Zoom lenses will usually show some amount of barrel distortion at their widest focal length and pincushion distortion at the longest focal length. Both types of distortion are easy to recognize once you know what they look like -- google up some pics. The good news is that you can correct barrel or pincushion distortion in many image processing packages.
There are other more exotic forms of distortion but hopefully your problem is a simple one!
Cheers,
Rick.