Hi, I'm new to the forum. I'm giving serious consideration to picking up an RX1 or RX1R. The "problem" (very much a first world one!) is this. Whichever one I get would be as a complement to my Sigma DP Merrill 3. I am all but convinced that no camera outside of the D800E (with top Nikon glass) can even get close to matching the resolving power of this thing, and that's not why I would be getting the Sony. I would be getting it for a more wide angle view (the DP3 is 75mm equiv) and low light / high ISO ability (of which the Sigma has neither: at 100 and 200 it is peerless, 400 is pushing it in colour and 800 for b/w is its absolute limit). However, the Sigma has spoiled me in terms of sharpness and resolution. I look at my older pictures taken with other cameras, and zoomed in to 100 per cent they just look like mush in comparison. My question is: if you sharpen the RX1 files well, do they get close to the RX1R files? Or is the difference that noticeable? It's less a question of money (the 2 models of RX1 are the same price) than of IQ. I played around with the RX1R in a camera shop and the overall haptics and general feel are superb. I like the focus peaking too. I was considering the new Olympus mirrorless (the EM1), but these days I'm firmly into dedicated lens/sensor matches (hence the Sigma). If anyone can shed light on the effect of the removed AA filter from the RX1R in comparison to the RX1, it would be much appreciated. Thanks!