Summary: After reading so many reviews, I got this lens but was disappointed with this product. 1. Picture quality is the worst. Never get this lens. Images area all blurred. 2. Size/Weight is heavy and definitely not a walk around lens. 3. Value for money is still too much for such cheap constructed lens. I have been taking photos quite a while and this lens really falls beyond my expectation. I won't refer this lens to any one out there. Though cheap, it is not worth buying.
Summary: This lens is very flexible being a full range 2.8. It really let's in a lot of light. The resolution is absolutely crisp on my K-3 and the AF is fast and silent, amazing. It is a little big and heavy; that is the trade-off. I think this will be my new favorite lens. To compare I have a prime 35 and prime 50 which are much smaller and lighter. The situation will dictate which I use, needing tele or not.
Summary: It's a sharp, sturdy and reliable lens. I had the Nikon 35mm and 50mm both 1.8G, they were awesome but were stolen from me, so I went in my way to replace them and this one crossed in front of me with awesome reviews, image quality is better than my 35mm(may be my copy was too soft) and almost the same than the 50mm(the sharpest lens I ever tried) but the real advantages with this one is that that it cover from 17 to 50mm with a nice constant aperture F/2.8 just as...
Excerpt: I use this lens for both landscape and portrait photography. Great lens exceeded my expectations. Was worried when I initially decided to buy this lens due to some poor reviews. All doubts are cast out of my mind now. I have found nothing wrong with this lens so far.
Pros: Durable, Fast / accurate auto-focus, Nice Bokeh, Strong Construction
Excerpt: I've had this lens a little over a month and it has been great on my 70D. Very sharp and fast in low light situations. Since I'm usually shooting at dusk and night this is a great advantage to me. The build quality is great, not overly heavy, and has become my goto lens for walking around and dusk photography. I would definitely recommend this lens to anybody wanting to upgrade their kit lens.
Excerpt: My main use is for family photos and events. This zoom range works well for tight shots. The F2.8 enables more indoor shots with existing light. Along with the ability to zoom in or out makes it much easier than using a fixed 30mm or 50mm prime lens. I only wish it was faster as f2.8 indoors does not blur the backgrounds as much as I would like. I also intend to do low light videos.
Pros: Durable, Fast / accurate auto-focus, Strong Construction
Summary: Absolutely love this lens! Bought it as an upgrade .I use it to shoot large groups and landscapes. Colors are amazing. Images are nice a sharp. I was worried that they would be soft at first but they are tack sharp! Thank you very much!