All these numbers and codes and crap from these DSLR's mean pretty much nothing to me. Some of the features I can understand, but for the most part it is all jibberish to me. Basically I want to photograph critters that are probably going to be a LONG ways off, at least 50, maybe 200 yards. We have some of the spookiest deer and elk around, if they even hint of a human they are gone. There are some exceptions, one where I had a doe not 10 feet from me while taking my morning leak, but I can't count on that to happen again. SO... If I want to be able to shoot critters from that far away, what should I have? I look at the different lenses and cameras and it means nothing to me.