Excerpt: I've been using the lens to take shots of the ducks at my local pond. I previously had a Tamron 70-200 F/2.8 and the Pentax basically blows the Tamron out of the water. It tracks movement better, focuses faster, almost never hunts, has better color, better contrast, nicer sharpness. I can't recommnd this lens highly enough.
Pros: Consistent Output, Durable, Easily Interchangeable, Fast / accurate auto-focus, Nice Bokeh, Rugged, Strong Construction
Excerpt: I have previously had/tried the FA 28-200mm, DA 50-200mm, DA 55-300mm and briefly the Tamron 70-300mm. The DA 55-300mm is a good lens, but the AF drove me crazy. The Tamron has PF issues, the 50-200mm is good at mid-range, but is a bit short and slow, and the FA has a lot of distortion issues.
Pros: contrast, colour, sharpness, tripod foot, good range
Summary: Price was good!! This is a high end lens & lives up to everything that we heard about it. It's quiet & easy to use & you can't beat it for the quality & sharpness of pictures. Great lens!!!!!!! Best one in the bag!!!
Summary: I am not a pro or even an advanced enthusiast. I Love the lens though. Beautiful clear photos. It works seamlessly with my K3. I agree with other people's enthusiastic reviews who have greater technical knowledge. The lens must have good testing numbers if it produces such nice photos. Some complain about the weight, but really, it is not THAT heavy for being a long telephoto lens.
Summary: I just received this lens today. Haven't had a chance to take any pictures yet but, I did look it over good and mount to camera and operate it briefly. My 1st impressions out of the box: DAM! it's large and heavy, smooth operation and seems to be very well built and did I say DAM! it's large and heavy. I will update after I actually take some photos with it this weekend. I love this lens so far as to size and build quality.
Excerpt: This review is simple: this is one of the finest zoom lenses I have ever owned by any manufacturer. I've shot with Canon L glass and Nikkor pro lenses and this Pentax matches or exceeds the competition. With an equivalent focal length of 90-380mm, water-resistant, a constant f/4 aperture, sharp at all focal lengths, and lighter than either the Nikkor 80-400mm or Canon 100-400, this lens mated to a Pentax K-3 is now a essential part of my travel kit (the other component...
Pros: Consistent Output, Durable, Fast / accurate auto-focus, Lightweight, Rugged, Strong Construction