Anti-aliasing steps in blends
If you have a dense blend, it may be useful to turn off the anti-aliasing in the blend so the document redraw faster. You turn off the anti-aliasing individually for any blend object. When anti-aliasing is disabled in a blend, only the original blended shapes are anti-aliased, not the steps.
To turn anti-aliasing of blend steps on and off
1. Select the blend (see Selecting objects).
2. Choose the Blend Tool.
3. Click the Anti-alias button on the Blend Tool Infobar.