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Anonymous
February 16, 2013
解決済み

Photoshop CS6: soft brush suddenly looks pixelated instead of smooth

  • February 16, 2013
  • 返信数 12.
  • 89027 ビュー

I've never had this problem before. I'm using the standard soft round brush to blend colors, which has always given a smooth effect, but now it suddenly looks all pixelated. The brush strokes also appears in rings instead of a smooth gradient. It looks as if the picture has been sharpened too much or saved in bad quality. I've already tried things like changing the brush settings, deleting photoshop preferences, increasing the RAM assigned to photoshop, but nothing works. Does anyone know what caused this? It's driving me insane! I get the same problem in an older version (Photoshop CS), so perhaps it's not photoshop itself?

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解決に役立った回答 neilj58437623

Just to add to this in case anyone else encounters the same problem.

I had banding that almost appeared vector like in photoshop cc 2017 when using any brush much like the problems encountered in this thread.  Luckily I have a dual monitor setup with a 27" LG IPS and a 24" Dell IPS.  What I did was drag the file from photoshop from my main LG into the Dell and noticed that the gradients all appeared perfect.  That led me to believe that it wasn't the video card or photoshop necessarily causing the issue.

It turns out that the monitor profile is what caused the banding.  I calibrated the monitor using a calibrator which created a monitor color profile. I loaded this in windows 10.  Now the important part.  In photoshop under edit > color settings you have to choose that same color profile used in the monitor. When both are the same profile the gradients all magically worked again.  Hope this helps

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A
a_squired_taste
Participant
October 30, 2013

The answer is simple. Reset photoshop completely. This worked for me.  I was having problems with my soft brushes having hard edges. I reseted photoshop by this command:

Windows - CTRL-SHIFT-ALT immediately after you double-click the PS icon.

Macintosh - CMD-SHIFT-OPTION immediately after you double-click the PS icon.

hit ok, photoshop will reset, and you'll find the brushes work properly again. boom. You'll most likely loose your custom brushes, but if you saved them as a .abr somewhere you can load them up again.

Noel Carboni
Noel Carboni
Legend
February 16, 2013

Sounds like a problem with your display settings on your system, or possibly a problem with your monitor.

Does it show in a screen grab?

If so, please post a screen grab here so others can see exactly what you're seeing.

Please also describe your system (hardware, OS, etc.).

-Noel

A
Anonymous
February 16, 2013

Thank you for the reply!

Here's a screenshot of the pixelated brush:

http://i1278.photobucket.com/albums/y520/Kitsuru/ss_zpsbf2397a1.jpg

And these are my system specifics:

Windows 7, service pack 1

Intel(R) Core (TM) i7-3610QM CPU @ 2.30 GHz

RAM 8,00 GB
Intel(R) HD Graphics 4000
NVIDIA GeForce 610M

Noel Carboni
Noel Carboni
Legend
February 16, 2013

Yes, the spots that are smooth stay smooth when i paint over it. I have no idea how that's possible


I can explain it, but it gets a bit technical.

In 8 bits/channel mode, every red, green, and blue component of a pixel's color is quantized to fit in 8 bits - meaning there are only 256 different levels of red, green, and blue.

In short, in an 8 bits/channel document, there are only so many shades you can have.  Generally speaking, with a good monitor the difference between these shades is just about visible. 

Worse yet, if you do anything to an image where you manipulate it  - e.g., brightening it with Curves or something - adjacent shades that differed by one level can end up differing by more than one level and become even more visible.

In order to "cover up" the blockiness/posterization that you've already accumulated, you'll need to blend those areas after having switched to 16 bit mode, possibly as I said using the Smudge Tool to "smear" adjacent pixels together.  Try it.  It may take a while to get the hang of it, but it does work.  The other alternative is to just repaint those areas from scratch.  Like I said, it may not be easy to fix, but I don't think all is lost.

Another technique people sometimes use to hide posterization is to add noise selectively, which tends to break up the digital appearance of the noise.

As an example I smudged, added noise, and a tiny bit of motion blur to selections within one of the feathers in the image you posted...

-Noel

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