Excerpt: This lens is very sharp, even wide open and at normal distances, so not as fast as other 50mm primes, but you can use its full aperture range. The versatility of native 1:1 macro focusing is also an invaluable, in my opinion, even if you don't plan to do a lot of high-magnification dedicated macro shooting with this lens.
Excerpt: I needed a f/2.8 or faster, I haven't used a 50mm since I owned a Ricoh. So,I'm coming from using a Sigma 17-70mm f/2.8 on my Canon 50D to a 50mm on my Pentax. Very impressed, not only is this lens super sharp and fast but it will practically shoot in the dark and having the macro is a bonus.
Excerpt: I haven't used a 50mm since I owned a Ricoh back in High School. Sharp, fast, awesome in low light, excellent macro and light weight. I'm coming from a Sigma 17-70mm on a Canon 50D.I switched to a Pentax K-5II's a month ago because I wanted something lighter to carry around. Extremely happy with my decision to switch brands.
Pros: Fast / accurate auto-focus, Lightweight, Low Light, Nice Bokeh
Excerpt: Images are razor sharp. Focus operation is fast and dead accurate. Macro is marvelous, especially set to manual focus, able to get as close to only 1.5" away from the tip of the lens, producing crystal clear images.
Pros: Consistent Output, Fast / accurate auto-focus, Nice Bokeh, Rugged, Strong Construction
) Most photographers (including me) rely pretty heavily on zoom lenses for ordinary subjects
Ward Johnson, Amazon
28 December 2014
Summary: If you're looking for a medium-focal-length aspherical (flat-field) macro lens, get one of these while you can; it appears that Pentax is phasing it out. This lens must be one of the best-kept secrets of the Pentax line: it is in the low-to-middle segment of their price range, but is similar in quality (optically speaking) to some of their higher-priced lenses, and to similar Pentax-mount macro lenses made by other manufacturers (Sigma, Tamron.
Excerpt: I put this on my new K-3 a couple of weeks ago, and have not taken it off. It is a nice all around lens. The auto focus has been spot on, and the manual focus is smooth and precise. Excellent images.
Pros: Fast / accurate auto-focus, Lightweight, Nice Bokeh, Strong Construction
Excerpt: I've only had this lens for a short while, but already I'm impressed with it, and I really like shooting with it. I've been using a DA35 limited macro mostly, and have loved that. I also tried out a DFA 100WR macro, but found that I'm more of a "close up" photographer than a chasing bugs with strobes kind of photographer. Just couldn't warm to the 100mm (150 cropped equivalent) range.
Pros: Small size, sharp, colours, contrast, 49mm filters
Excerpt: Teriffic little lens, small light , a pleasure to use, SHARP.. great marco for close places, and doubles as an excellent 50mm portrait lens. Quick shift is loverly, and the clamp makes Manual Focus feel like using an old MF lens. Aperature Ring, and FF so I can still use on my old film bodies without any issue. Would have been an 11 if it had a focus Limiter, anybody who can't produce cracking Pictures with this lens probably shouldn't have one in the first place.
Pros: Small , Light, Solid feel, Love the Clamp for extra friction on the Focus colar in Manual Focus, and Quick shift
Cons: Zero... Well, could do with a Focus Limiter....
Excerpt: Considering both the present market of 50mm's that Pentax offers, and also the ones in the past - this is by far the best optical 50mm lens that Pentax offers. Sure it is not as light, or as small, or even has the better aperatures of some of the other 50's, but... For this 50 it's all about the optics, and also the added benefit of having 1.1 macro.