For some time now I have been unable to determine why my brush or eraser tools do not completely cover the area outlined by my tool. I have reset brush settings as well as reloaded the brushes themselves. Notice in my animated gif that there is an area just inside the tool outline that is not covered when I click - even though hardness, opacity and flow are set to maximum and spacing is set to 1%. The area of the uncovered space increases proportionately as I increase the brush/eraser size.

Photoshop brush/eraser incomplete coverage

EDIT: Brush size is set to normal and jitter is set to 0%

  • Try to do ALT+CRTL+Move your mouse down (for mac). Moving up = Add blur Moving down = Remove blur Moving left = smaller brush Moving right = bigger brush If your brush is a bit blured, it reduce the shape size. It may be the issue...
    – Mijer
    Commented Aug 31, 2016 at 13:45
  • Hi @danwpc. Please don't edit answers by other people to respond to them. This is exactly why we have comments below the answers. You can also edit your own question to add more information
    – PieBie
    Commented Sep 2, 2016 at 6:40

2 Answers 2


Go to your Photoshop preferences (CTRL + K), select the tab 'cursors' and choose 'Normal brush tip'. Yours is probably on full size brush tip (see example). enter image description here


Try on Brush setting > Shape Dynamics> SizeJitter to 0%


  • 1
    Given that Shape Dynamics is not checked in his gif, that shouldn't be the issue.
    – Joonas
    Commented Aug 31, 2016 at 12:09

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.