Vignetting

[steve]

Originally Posted by swanny338

I am sure its not coming from the UV filter.. most likely its just cause its a lower quality lens... if you stop down to like f8 or 11 it most likely wont be there...

Not to discount the possiblity of it being caused by the quality of the lens, how can you discount the possiblity of the UV filter working like a hood.
For me when I see vignetting the first thing I do is remove anything in front of the lens (hood, filter) just to elimentate the possibility.

[Bill Huber]

Originally Posted by steve

Not to discount the possiblity of it being caused by the quality of the lens, how can you discount the possiblity of the UV filter working like a hood.
For me when I see vignetting the first thing I do is remove anything in front of the lens (hood, filter) just to elimentate the possibility.

If it was the UV or a filter it would be more uniform all around the image.

[Tom Hicks]

Light fall off from poor optics , try shooting at a smaller f stop . you might take it and do a test shot at each f stop . would bet it stops at some point as you stop down.

[King Edward]

See if this is something you can use...PTlens
http://www.epaperpress.com/ptlens/index.html
There is a Photoshop plugin, and stand-alones available. This is supposed to help with the problem you're having. I haven't tried it myself.