Summary: Little needs be be said about the performance of the Pentax DA* 50-135/2.8. This lens is sharp rought out of the gate at f/2.8. Set your dSLR to A mode at 2.8, and enjoy.
Summary: I like the size and price of this lens, compared to similar optics from other manufacturers. The build quality is good, although I'd like it to be a bit beefier.
Excerpt: well since it's a DA* it's weather sealed, and the best of pentax. the photographic qualities of this lens concerning Image quality it's perfect..
Pros: Sharp, fast, good build quality, weather sealing, great colors, silent AF, bokeh, lens cap is nice.
Cons: slow AF, not quite enough zoom at the long end, huge hood.
Excerpt: Really nice and clear photographs, it does focus somewhat slow but not too bad. The range is great, personally would prefer something like a 200 but that is just me.