Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I'm currently working on some very small images in Photoshop. It always tries to anti-alias the edges, but this makes them really blurry on this scale.

Is there any way to turn this off, so I can draw sharp edges?

share|improve this question
    
Edges? For which tool? –  iglvzx Jan 6 '12 at 17:55
    
Most of them. Most annoying are the brush and when deleting a selected area. When I have a black object, on a a white background and try to delete a part, the edge will become grey. –  Simon Verbeke Jan 6 '12 at 17:58

2 Answers 2

up vote 1 down vote accepted

To the best of my knowledge... Photoshop doesn't anti-alias most things. (I believe font layers are... but that's another subject) I believe you're referring to "feathered edges" or are working with "semi-transparent areas". You either need to remove the alpha-channel from the layer... (meaning no transparency) or be sure not to use tools that select/create soft-edges or have a feathered edge.

share|improve this answer
    
For what it's worth, here's a good explanation of anti-aliasing. en.wikipedia.org/wiki/Anti-aliasing –  TheCompWiz Jan 6 '12 at 18:40
    
That page shows exactly what's happening. The image near this Title shows it (en.wikipedia.org/wiki/…). The left is what I want, the right is what I get. –  Simon Verbeke Jan 6 '12 at 19:01
1  
You're working with semi-transparent pixels. try grabbing the pen tool... with a 1px square shape... (make sure it's not a feathered edge or something weird) and color that one pixel. You'll quickly find it's not black or white... or grey... but rather black... with 50% transparency (or so) The paintbrush tool typically has a feathered edge... to make it behave more like a "real" paint-brush. –  TheCompWiz Jan 6 '12 at 19:03
    
You meant the pencil tool? Because the pen only makes a path. The pencil seems to work fine, thanks :) –  Simon Verbeke Jan 6 '12 at 19:11
    
yeah... sorry the pencil looks like a pen... but you know what I meant. :D –  TheCompWiz Jan 6 '12 at 19:14

For those who come after, I believe that the issue here is that your shapes are not aligned to the pixel grid.

Tips:

  • show the ruler, and right click it, set to pixels
  • zoom to 100% so that:
    • nudging with arrows moves exactly a single pixel, and
    • Holding shift constrains guide movement to the currently selected ruler units.
  • when free transforming, click the top left (any but centre, really) anchor point and set the x/y values to whole pixels
  • right click the dimensions and set to pixels, then set to whole pixels
  • when creating shapes, click the options drop-down and set 'snap to pixels'

More details: http://memelab.com.au/photoshop-tips-aligning-guides-to-the-pixel-grid/

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

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