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Activity Forums Adobe After Effects depth of field leaves darker edge

  • depth of field leaves darker edge

    Posted by Jay Lee on May 6, 2008 at 2:53 pm

    Hi,
    I’m getting a dark blur around the edges of my composition when I turn my Depth of Field “on.” I have my Blur level at 50% and my Aperture at 100 pixels- if I bring either of them down to 0, the dark edge disappears. But I wanted to keep them because it helps with some gradient banding I’m getting in the foreground of my comp.

    Any other way to get rid of the dark blur around the comp edge?

    Thanks in advance for any advice!

    Grant Swanson replied 18 years ago 2 Members · 1 Reply
  • 1 Reply
  • Grant Swanson

    May 6, 2008 at 11:13 pm

    Hi Jay,

    This happens because there is obviously no “Repeat Edge Pixels” button. The Lens Blur effect works off of a luminance map, or as it’s called in the effect, a “Depth Map Layer.” So for the most ease and control, I would create a black/white/gray layer to show where you want to be blurred. And set that layer as the source of the blur.

    The next best option, and is much simpler, is to just use the Box Blur effect, which much more closely resembles in-camera depth of field, when the iterations is set at 1 or 2 than does the fast blur effect.

    Hope that helped!

    -Grant Swanson

    https://videoapex.blogspot.com/

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