Hands on review HERE. I took out some of the highlights...looks so good. Back Focus Adjustment. The battery is Lithium Ion and less than half the size of the previous battery. It's also much lighter. Canon has adopted a vibrating cover plate method of sensor cleaning. The MKIII's viewfinder is claimed to be a complete redesign, with a larger pentaprism. It provides 100% coverage and is big and bright. Highlight Tone Priority. 14 Bits. In addition to all of the regular menu setting screens there is a My Menu screen, which can be user customized. Live View...But, there's more! Wonder of wonders Canon has provided a live histogram.