I have a Canon 7D which has been a great camera for me, and I am thinking about upgrading to a full frame model.

I’m a photo enthusiast, and I currently own 4 Canon lenses: 24-105mm f/4 L IS, 70-200 f/2.8 L II IS, EF-S 10-22mm f/3.5-4.5 USM, and the Canon EF 100mm f/2.8 L IS USM Macro Lens.

I really want the 5D Mark III but it’s too expensive. So my options are the 6D, a used/refurbished 5D Mark II, or stay with the 7D right now and save some more cash for the 5D Mark III.

My questions are: 1) Am I going to see a significant increase in image quality going to the full-frame cameras? 2) Will I be loosing some important features of the 7D if I trade for the 6D or 5D Mark II? 3) What’s a better overall value - the 6D or 5D Mark II?

I would appreciate some feedback.