I would use the camera that suits my needs. Kids: can't cope without autofocus MZ-5
Birds - hummingbirds e.g., give me an MZ-S Travel photo into poorer areas: take my cheapest ME or whatever Otherwise: LX Blowups and high quality pictures: Medium Format As written here before - what is good quality is subjective and sometimes a perfect picture with the cheapest of pentax lenses my render a fantastic photo. Sorry: I wouldn't use screw mount simply because I use single focal lengths and they are too slow to exchnage on the camera. Cheers, Ronald
