I played around a bit with the Sony A7 (supposedly the first full frame\nmirrorless SLR) and it seemed rather solid. It's a lot cheaper than the\nRX1R I bought a couple of months back (which I *love*) but will probably\nramp up when you start adding lenses of course.\n\nIt had three function buttons, and on on the thumb, so you can assign ISO\nto that one and easily get to ISO selections while still looking in the\nviewfinder.\n\nSome problems I found in about ten minutes of fiddling:\n\n1. EVF sucks for SLR work. The recent thread nonwithstanding. It's just way\nway too slow and panning a scene just hurts your eyes, and the presence of\npixels are very obivous to the eye. This is FAR from replacing an optical\nviewfinder, and this one is supposedly one of the better EVF today.\n\n2. Startup time is still way too slow. This is a problem on my RX1R as\nwell, it still takes slightly over a second to start up, and while it may\nnot ruin any possible shots, it still ruins the experience\n\n3. The thumb knobs are awkwardly placed. The body is so thin so there is no\nway to hold it comfortably, so the knobs end up in strange places. And\nwhile I like the C1 programmable button near my index finger, it's still\nvery uncomfrotably positioned. But I do like that the A7, in contrast to\nthe RX1, has both a back and front knob.\n\n4. For all the compactness of the body, most of the lenses were still\npretty damn huge.