I get these weird black edges in renders. I don't know what the cause of it is. I've gotten them before with really close up shots and low focal lengths, but this image only has a focal length of 25 or so. What could be the cause?

In the image below, you can see it along the edge of the wave at the bottom just to the left of center.

black edges in render


closed as off-topic by Gunslinger, ideasman42 Jan 6 '14 at 1:12

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "This question appears to be off-topic because it is a bug report and not an actual question. These should be reported to Blender's tracker instead." – ideasman42
If this question can be reworded to fit the rules in the help center, please edit the question.

  • $\begingroup$ Please attach blend-file. $\endgroup$ – Gunslinger Jan 5 '14 at 17:54
  • $\begingroup$ How do I attach the file? I don't see a link? $\endgroup$ – Ed Baker Jan 6 '14 at 8:23
  • $\begingroup$ Put it somewhere online and link to it. For instance dropbox or pasteall. $\endgroup$ – Gunslinger Jan 6 '14 at 9:47
  • $\begingroup$ Link to the file here: dropbox.com/s/mtfl4rhne0as4rw/Ocean%20Sunrise%2001.blend $\endgroup$ – Ed Baker Jan 7 '14 at 8:50
  • $\begingroup$ I have examined the file and find nothing wrong with it. The black area change with ior of your ocean material. I don't know enough about optics to know what this means. It could be a bug, or an optical phenomenon. Sorry. $\endgroup$ – Gunslinger Jan 7 '14 at 20:39