SLR
Single-Lens Reflex
I shoot with a Canon 5D Mark III and a handful of L-series lenses (24-105, 70-200 f/4, and 70-300).
My most useful post on Photography is a Photoshop lighting correction technique I learned from a pro that has improved boatloads of my problem photos.
You can see a few of my favorites at www.ColoradoPhoto.gallery.