7. Anti-aliasing

The standard Pov-Ray anti-aliasing doesn't look too good, especially if you use 
transparent or reflective materials. Have a look at the lights on top of the 
Black Cat, and the weird pixellation you can see there.

You can play with the AA-settings in Pov itself, but I usually just turn AA off 
altogether, render an image that's at least twice as large the image I want to 
end up with, and then resize it in Photoshop, or another graphics program that 
does bicubic anti-aliasing. Look at the difference: <tutorial_chapter07a.png>.

Also, check out how much more smooth and realistic slopes and edges of bricks 
look.