Excerpt: HSM are quiet and fast on my K-3 body; a great lens when compared to similar offerings elsewhere. Aperture of f2.8 was indeed quick, but not quick enough, but please don't blame Sigma! My tastes are begining to lean toward the prime lens. I had to think long and hard about keeping this gem.
Pros: Consistent Output, Fast / accurate auto-focus
Great lens at a great price. Takes very good pics / vids!
18 November 2014
Summary: Very good lens, colorful and very deep looking HD video and pictures. Works well in any lighting. Good zooming range and focus. Love this lens! Best lens you will find for this price! Best investment this year so far!!
Summary: I just received the item and taking my first test shots with this lens. Even before fine tuning (calibration), I am pleasantly surprised with the quality of the results. The image at f/2.8 seems a little soft to my taste, but nothing alarming, all lenses perform not at their best when fully opened.
Excerpt: I've only had this lens a couple weeks and have only been able to take test shots of pets and family/friends. Thus far I'm extraordinarily pleased with its performance, especially considering the price. This was my upgrade from the standard 18-55mm pentax kit lens.
Summary: I got this lens from Amazon. The delivery was prompt and the item arrived in good condition in a protected package. I am using this lens with my Canon T3i. It has been about of week since I got this lens.