As observed by many users, the ISO performance beyond 400 is a let down, coupled with low light performance, it made me think hard about using the SD14 in situations I'll find myself shooting in. These were the main issues for me, outdoor use in general use I have no complaints at all!
I bought the camera used, was conned by the previous owner, believeing parallel imports are supported by the authorised distributor, that the lens were checked by them before etc. NOT TRUE as I found out! Took a bit of persuading (gotta pay a servicing fee) before they took in my camera and 2 lenses to check for calibration - just wanted to be sure cause I had some soft shots which may be my handling. Anyhow, after a few days, I picked it up, was told how "not to focus" being explained phase focusing, concluding finally that everything is within specs - what that means huh? Its like acknowledging "that it is not the best, but within our acceptable performance envelope".
I use it some more and then decided I'll move on.
I agree that the SPP4 software is really nice, but some forumers felt SPP3 gives better B&W conversion. Do visit Carl Ryterffalk blog, big inspiration for me!
Oh, I have the M42 to SD adaptor still ...cant decide if I shouold part with it or wait for the SD15/SD1 ..