Just recently I've been thinking about how m4/3 cameras (and by extension similar large-sensor compact cameras) has changed photography for me. I've heard it said numerous times at mu-43 about how various members bought into m4/3 to replace their existing, heavy DSLR gear. Thinking back to the middle of last year when I first bought my E-P1 it was not for the reason of replacing my DSLR gear but for something a bit different and fun that would allow me to use the old film lenses that I had collected over time (I subsequently discovered that I could have used Olympus OM lenses on my Canons the whole time, but that's another story). I was never unhappy with my DSLR gear so the two systems co-existed happily. Fast-forward almost a year later to when I bought my GH1 and a few more native m4/3 lenses and I did start to question whether the DSLR was needed. As it turned out the answer was still yes. Not that I needed the DSLR gear, but that I still wanted to use it and that the experience of using it, including everything from operation to image output, was different and enjoyable enough to hold onto it. During this time however, I realised that where I had previously enjoyed using mid to high-end compacts (i.e. Canon G10, G11 etc), in all the time that I have been using m4/3 cameras I have barely picked up a compact camera. My Canon G10 was somewhat reluctantly sold not long before I first bought the E-P1 and before it dropped too much in value. My old Canon IXUS 960is sits in my work bag for the infrequent times that I might need it but never comes out for "recreational" purposes. My Ricoh CX1 that I damaged overseas in early 2010 has not been replaced. The Canon G11 I bought after the E-P1 was sold with no regrets. The Panasonic LX3/LX5 and Canon S90/95 that I once had my eye on have all but lost their appeal. So, while I have found that m4/3 has partially replaced DSLRs, for me it has almost totally replaced compact cameras. The irony is that m4/3 has actually increased my use of DSLRs simply because it has got me back into photography as an everyday hobby rather than just holidays and special occasions (as my rapidly diminishing hard drive space will attest!) The fact that a comprehensive, high quality, interchangeable-lens camera system now exists with a sensor size almost perfectly balanced for IQ, lens and body size, and depth-of-field, and with a size and weight barely larger than some other compact cameras, has changed the nature of photography for me. It may well be that I eventually stop using DSLRs as well, but right now I couldn't imagine NOT having a mirrorless (and for the foreseeable future, a m4/3) camera system.