I did a test render of two spheres with exactly the same texture. One was render with antialiasing normal and one with antialiasing draft. I could not see the difference between the two except that draft seem to antialias as it render ( no separate pass for antiallias) and it took almost 4 times longer to render. When I render to disk , at 300 dpi, I get a great resolution and detail. So, when would you use antialiasing draft??

Primarily, when you're doing a test render. Say, you want to see what something looks like rendered, but you don't want to wait 3 hours for the anti-alias phase finishes... :)

You can also do object selective anti aliasing by doing the following: Display the Object Attribute To switch Anitialiasing off, hold down Shift + Control as you click the check mark to close the attributes box. To switch it on again hold down Shift only while closing the Attribute dialog. This was taken from B soultions website. Hawkfyr

Thanks, but for a test render draft quality seems to take much,much longer than normal mode yet it looks the same. I think it oversamples the edges more but I can not see the difference. The selective antialiasing is neat but I still can not grasp the difference between both antialiasing modes.