I am planning to get a DSLR camera shortly, and there seems to be plenty of choice of 10 megapixel cameras (which I think I will be happy with) for around 400. I still have my old Pentax P50 and I wondered if the two lens from this would fit and be fully functional on current Pentax cameras? If so is it worth me getting a Pentax body or should I disregard that and look at all the alternatives? One lens is a Takumar-A zoom 28-80mm ok not a top job but I have already got it!