Dark Corners

kivers

I took a bunch of pictures this weekend while hiking up in the white mountains, when I got home and looked at some of the pictures I noticed there were some dark corners. See example... (click for larger)


What would cause this? It's not that bad in some pictures, but in some of the HDR pics I did the effect is very noticable.


Thanks for any help!

Maestro

I am certainly no expert but if you did not use a lens hood it could be bright light getting into the lens creating a shadowing effect in the corners. I see what you are talking about but I think the picture looks good considering it looks like you took the picture in some pretty harsh light.

pyrtek

http://en.wikipedia.org/wiki/Vignetting

kivers

Thanks!

Would using a UV filter make the problem worse? I had one on for all of the shots.

Art Scott

kivers wrote:

Thanks!

Would using a UV filter make the problem worse? I had one on for all of the shots.

That really depends on the focal length of the lens......how wide was the lens.......some lens hoods will cause vignetting at the widest focal lengths.....as for filters, for WA lenses most companies make an ultra thin model for WA lenses to decrease the probability of vignetting......

HTH

kivers

The focal length was 18mm, but my f-stop was 11. From the wikipedia entry it seems that lowering that a notche would resolve some of the issue.

LiquidAir

kivers wrote:

The focal length was 18mm, but my f-stop was 11. From the wikipedia entry it seems that lowering that a notche would resolve some of the issue.

If it is the filter causing the vignetting (definitely a possibility at 18mm) then stopping down will make the corners darker with a more defined edge. If the problem is lens vignetting, then usually the corners get lighter as you stop down. Given the you are already at f/11, my guess is that the UV filter is the problem.

CatOne

As others said it's certainly possible the filter is causing the issue. You can get thinner filters which are less likely to cause this.

That said, it's often not a huge deal. Most software has functionality to lessen or remove vignetting, specifically by brightening the corners a bit. So you can give that a try.

kivers

Thanks for all of the tips and help! Next time I'm taking photos like that I'll experiment with the filter and see if it is the problem.