Photoshop: Mask bleeding with higher density fills

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  • Updated 8 years ago
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Can anyone address the mask bleeding that's been present in the last couple of versions. Everytime I think It's stable I get a full mask that responds to higher density fills. In and of itself this is manageable except that it does so with a persistent feather and my channels bleed all over the place. I figured this would get solved between CS 3 and CS 5 but it might be that the problem is so unbelievable that no one has thought to report it. Please, please, please look into this. My control layers are starting to act like a finger painting and it's simply infuriating.

If I create a channel directly from a solid selection I shouldn't wind up with a channel with only 75% density and a feather that slashes over the edges.

Maybe it's in the Refine Edge allowances, maybe it's just a code cut and pasted oversight, maybe the bit count bump up was too much for some of your core programing but I'd really like to be more confident in my workflow and not have to baby every little layer.

Likewise it might be an interpolation of the OS, (this happens in both Mac and PC environments) but you guys should be compensating for it.
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Geoffrey Lee

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Posted 8 years ago

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Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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Hi Geoffrey. I'm not quite following the problem you're describing here. Can you post some images and elaborate on what you're doing and seeing?
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Geoffrey Lee

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Sure give me maybe 48 hours. If you want to see what I'm taking about. Open a medium sized (1500x1500px) canvas at minimum 300p/i -> make an alpha channel of a shape
-> view the channel mask density fills -> select the Paint Bucket with a full black fill
-> zoom in on the edge of your active-to-freeze area -> and fill the active space with the Paint Bucket at 255 tolerance.

What I've experienced is two things. One the active space (loaded from a selection) still increases in density. I haven't had a chance to check but I don't think this visual event actually has any impact on the effect of adjustment layers and the like.

The problem occurs when the active area (without any preset feather or density variables) continues to bleed into the freeze area. The separation simply isn't exact. Most of the time this isn't noticeable, frankly it's often preferred when doing color separations. But if I'm working in a composition that has a lot of grey scale against a pure white background the work I do to the image objects (between the foreground and background) kills the separation.

Of course I could approach the whole thing with a different technique, but if the masking's not exact I'm never going to really avoid the problem. I'll try to create a storyboard recreation but it might take time I don't have right now. Do me a solid and execute on the steps I've laid out. You should see the problem immediately.

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how do I use it