Thanks for that guys,I was in two minds what to do, I think I'll keep what I have,

I use them on k100d, but I want to upgrade later in the year.
thanks

Hi all, got some old Pentax primes,all M's
f3.5 28mm
f1.7 50mm
f3.5 135mm
f4. 200mm
f4 50mm macro
thinking of selling the 28mm & 50mm, would I notice a big difference if I got a couple of A's or should I leave things as they are.
thanks for your time