Shrinking an object in a photo

This post is a bit of fun.  I was asked for help to shrink this guy’s head as a prank. I love pranks, but that’s not the reason I’m posting this.  There are some very important principles here, which you can use every time you need to reduce the size...

Fixing a crossed eye

Messing with eyes is very dangerous.  If you get it a tiny bit wrong, it can look horribly bad.  So please tread cautiously if you need to do this. A while ago I was asked for help to move the iris on this photo: First, I selected the inside of the...

CMYK or RGB files for press

If you’re a photographer looking to order press-printed products (eg business cards, photo books, calendars, etc) you might find it confusing that some labs ask for CMYK files, and some ask for RGB* files.  Why? They might ask for RGB because … they know...