There are completely black corners in some of my photos. What can cause it?

I have a full-frame Canon 5D Mk II and had the problem with my 24-105 Canon lens recently and have experienced it with my 12-24 Sigma lens before.

  • 2
    Is this with one lens, or every lens? Does the lens have a hood? – Matt Grum Apr 19 '13 at 13:31
  • 1
    Are you using any type of filter such as a UV filter or circular poloarizing filter? – dpollitt Apr 19 '13 at 14:07
  • 1
    One option is a wrong lens hood. If you have lenses the same size, it may be possible to mount the wrong one. I happened to me at least once :( Even if it fits, a lens hood is designed for the angle of view of the lens it came with. – Itai Apr 19 '13 at 15:16
  • 1
    The polarising filter sounds like a very likely candidate. I have experenced severe vignetting or black corners on some images because of that. – Guffa Apr 19 '13 at 15:38
  • 1
    Is this not a simple case of vignetting? As he's on a full frame 5D, at 24mm you do start to see those shadows creeping in in the corners...especially with the filter attached? – Mike Apr 22 '13 at 10:23

Most likely an incorrectly oriented lens hood. Lens hoods for zoom lenses are petal shaped, with cutouts which are designed to avoid shading the corners. The largest bits of the petal should be top and bottom, if the hood is rotated it could be the corners of the image are being blocked by the hood.

It could be you're using a lens designed for a smaller sensor so the image circle doesn't illuminate a large enough area, leaving dark corners. Finally there could be something lose inside the lens which is causing mechanical vignetting.

  • I am going to be worried about my lovely 24-105 canon lens! :( – Persian Cat Apr 19 '13 at 13:32
  • 2
    That's a FF lens so the image circle is large enough. Can you confirm the hood is correctly mounted? If so then I'm afraid there may be something lose inside the lens... – Matt Grum Apr 19 '13 at 13:35
  • not all lens hoods are petal shaped, btw. The one for the EF-S 18-55mm Kit lens isn't, for example... – matt.nguyen Apr 19 '13 at 13:46
  • Can it be fixed if there is a damage in my lens? – Persian Cat Apr 19 '13 at 14:41
  • 1
    Try taking a shot with the lens hood off to be sure that's not the problem. – ltn100 Apr 19 '13 at 15:25

There are two factors:

  • Something in the way of the light.

  • A small aperture.

You may have a lens hood that is too narrow for the lens, or a filter rim that is too thick. A polarising filter for example often has a higher ring than other filters.

The small aperture (high f-stop number) makes the lens hood or filter rim come closer to be in focus, so that it causes a black corner instead of just severe vignetting of the corners.

  • I can think of a third factor. The subject in the frame could be black :P – dpollitt Apr 19 '13 at 15:32
  • @dpollitt: That would not be another factor, that would be a completely separate reason. :) – Guffa Apr 19 '13 at 15:36

I had the same problem on a Sony alpha 77ii and a Sony 18-250 zoom, the combination of which I had used without problems before. After ruling out the misaligned hood which had caught me out before I found it was the circ polarizing filter I had started using a lot on a trip to the deserts of Arizona - I had been lazy and stacked it on top of the skylight filter rather than take one off and attach the other. Only fitting the polarizing filter fixed it though I only noticed the issue 1 day from the end of the trip - oops - had a lot of cropping to do when I got home.


I experienced the same problem with my 18-270 lens at the low end of the zoom and with a polarising filter. I tried it with and without hood and changing the aperture and shutter speed. What I found was that vignetting occurs whether the hood is there or not, but occurs at the 18mm zoom with the higher shutter speed. With a lower shutter speed or higher aperture it lets more light into the lens and so the dark spots disappeared. Unfortunately if I needed faster shutter speeds (photos of wildlife) the problem reappeared. It was a balancing act and one of the problems in having a telephoto lens of such a large range (or so I understand). I would be glad to hear of other people's solutions.


I experienced this the other day when shooting video (Canon 5D Mach II w/ 16-35mm), and I believe it was due to the Shutter speed as I accidentally turned the wrong wheel. When I noticed that I went below 1/60th of second to about 1/30th and readjusted the vignetting went away. Truth is I did not notice the vignetting until I played the footage back. Fortunately, I noticed the wheel error before recording a multitude of video clips.

  • 1
    This theory seems unlikely. How could a faster shutter speed cause this, in either still photography or video? – mattdm May 27 '14 at 6:14
  • @mattdm Maybe related to image stabilization? With slower shutter speed, the imaging circle can move to cover the corners. I have a lens that shows variable corner vignetting because of image stabilization. When IS is on, the vignetting changes as I move the camera around. – xiota Jul 17 at 6:43

protected by Community Jul 17 at 4:09

Thank you for your interest in this question. Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).

Would you like to answer one of these unanswered questions instead?

Not the answer you're looking for? Browse other questions tagged or ask your own question.