Can anyone tell me about their experience with the RD1. I have been looking at them for a while and would now like to buy one. Is the RD1s much better is the M8 a worth while leap in cost. Regards, Marvin Wallace. Hi Marvin, I've only used the M8. It has a few more mp & less crop factor. The M8 is 1.33. So you're 50 = 66 and 35 = 46mm I think the RD1 is 1.5 crop factor? You can find demo M8's at more reasonable prices now. You should try to shoot with them both if possible. Cameras are a personal & subjective thing. Best, Frederic