Still dabbling with in camera effects. Was outside in the yard over lunch with my favorite model. The rainbow effect and orange tone are from colored filters.
The vignette was generated using Exposure X5. I've never encountered a vignette tool like theirs. It gives you so much control. X5 is a pretty amazing all around for a creative person. It's like Camera Raw and Nik had a baby.
"... Adding effects is easy, but removing them to restore the original data is impossible... "
Some of the pictures were unusable for just that reason. Fun fun fun way to pass my lunch-break though.