Originally posted by Okami Of your collections , which ones do you consider must haves?
That's a difficult question. For macro work (insects), I usually choose the F 100/2.8:
As a compact walk-around lens, the F 28/2.8 is hard to beat. When I absolutely need the sharpest results, the F 50/2.8 is the right choice as it probably is the sharpest lens Pentax has ever made.
Also, the F 70-210 always goes in the bag. I like it because it is sharper than the (usually more expensive) DA 50-200. This photo was made with it:
The one I love most, however, is the F* 300/4.5. This lens has an outstanding sharpness and is so small... I recommend it over the FA* 300 and DA* 300 because it has the hood built-in, so you'll never lose it.