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1. Re: Colorpicker behavior: anyone else see this?
Aegis Kleais Dec 2, 2010 2:50 PM (in response to harry teasley)What is your eyedropper sample size set to and what is your brush's blend mode set to?
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2. Re: Colorpicker behavior: anyone else see this?
harry teasley Dec 2, 2010 2:55 PM (in response to Aegis Kleais)Point sample, normal blend mode at 100%.
I've gone in at 1600%, sampled a pixel, then made a mark with a 1-pixel pencil, 100% opacity normal, and it's more saturated than the pixel I sampled: I see this same behavior. I can desaturate the image to 0% saturation and not see this behavior, but I can't always do that. There's something very weird here.
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3. Re: Colorpicker behavior: anyone else see this?
MTSTUNER Dec 2, 2010 6:36 PM (in response to harry teasley)Do you have any of the brush dynamics set such as color dynamics?
If you sample the color and then fill a selection with the foreground color
is it still saturated (wrong)?
Does this only happen with gradients?
MTSTUNER
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4. Re: Colorpicker behavior: anyone else see this?
Noel Carboni Dec 3, 2010 9:15 AM (in response to harry teasley)I tried to duplicate just what you did. It doesn't paint any color for me - the picked colors just paint shades of gray.
I noticed that your brush doesn't paint all the way to the edges. Specifically, it looks as though you're getting an "all or nothing" coloration, and the size of your brush "footprint" is varying during painting... Is this some kind of brush dynamic at work? I don't use a tablet myself.
Something's definitely acting funny there, and I'd say it could be in the brush settings or behavior of the brush rather than the picker (or both).
I have an ATI 4670 by the way, on 10.11 Catalyst.
-Noel
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5. Re: Colorpicker behavior: anyone else see this?
Noel Carboni Dec 3, 2010 9:19 AM (in response to harry teasley)Oh, and what color profile is your document in?
Are you using a calibrator/profiler, and thus a custom monitor profile?
Lastly, the image in the video almost looks to be made up of the off-gray colors you're picking and showing. Is this true or is it an artifact of the video compression?
-Noel
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6. Re: Colorpicker behavior: anyone else see this?
Mike Gondek2 Dec 3, 2010 9:57 AM (in response to Noel Carboni) -
7. Re: Colorpicker behavior: anyone else see this?
Noel Carboni Dec 3, 2010 11:03 AM (in response to Mike Gondek2)Interesting. Mike, I absolutely cannot reproduce that, no matter how much jitter I dial in.
Where could Photoshop be getting any color but solid gray from the image? Any amount of saturation on a pure gray color is still... Gray.
Do you see anything but 3 identical color values when you sample the gradient?
When you created the gradient, did you have the [ ] Dither checkbox checked?
-Noel
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8. Re: Colorpicker behavior: anyone else see this?
Noel Carboni Dec 3, 2010 11:07 AM (in response to Noel Carboni)Noel Carboni wrote:
When you created the gradient, did you have the [ ] Dither checkbox checked?
Thinking further on this, I'll bet this is exactly the problem. Dithering during creation of the gradient has left some pixels slightly off-gray.
Moral of the story: Work at high bit depth and turn off dithering.
-Noel
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9. Re: Colorpicker behavior: anyone else see this?
harry teasley Dec 3, 2010 3:51 PM (in response to Noel Carboni)No, I didn't create the gradient with dither. Like I said, I sampled a pixel at 1600% zoom and got an incorrect result. And the strange hue of the gradient in the avi is a result of the video compression, I think. The first thing I did in there was to select the gradient tool and hit the black/white button on the toolbar, to create the gradient.
I think I've found the culprit, though. The time-honored "trash your prefs" worked. The brush was very basic, with no dynamics apparently on, but there must have been some at work. I have some very old brush files, from a few versions of photoshop ago, and perhaps those are causing me some problems. I don't know. But it's not happening since I trashed my prefs.
I hate that that still works.
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10. Re: Colorpicker behavior: anyone else see this?
Noel Carboni Dec 3, 2010 4:01 PM (in response to harry teasley)Ouch. I know what you mean. We'd like to think Photoshop's implementation is robust, but to be fair it has to deal with more compatibility issues than the average bear.
Does your brush still paint circles smaller than the outline (as you showed in the video)? Is that a dynamic I haven't run across, or was that possibly a symptom too?
-Noel
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11. Re: Colorpicker behavior: anyone else see this?
harry teasley Dec 3, 2010 4:10 PM (in response to Noel Carboni)That would have been the pressure sensitivity button being on.
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12. Re: Colorpicker behavior: anyone else see this?
Noel Carboni Dec 3, 2010 6:11 PM (in response to harry teasley)Ah, that explains it. Thank you Harry.
I just expected pressure sensitivity to just make a fuzzy brush smoothly larger/smaller, not make it paint various sized circles.
But I see that with the spacing at a larger value than I normally keep mine at (1%) and with a hard edged brush that it paints those circles just as you showed. It's amazing how differently Photoshop acts with just a few different settings.
-Noel






