Summary: This lens deserves very detailed praises, for which I do not have time at the moment. Therefore in short, this lens is a real jewel. Very sharp, very reliable, bright, fast, etc. Auto focus is on a slow side as many others noted, I share their thought, but it isn't a turn off at all to me. When you shoot close up, using auto-focus isn't very good idea anyway. Additionally, the use for portrait purposes is very rewarding.
Excerpt: When it comes to macro and portrait photography, this lens shines. Great Bokeh with somewhat soft, rich colors. I also have excellent results with night photography; the maximum f/2 is excellent in low light situations. Whether capturing landscape, portrait or macro, this glass is all I could hope for and is dramatically improving my learning curve.
Pros: Consistent Output, Durable, Easily Interchangeable, Fast / accurate auto-focus, Lightweight, Nice Bokeh, Rugged
Excerpt: Tamron makes great lenses. I have used them with 35mm cameras such as the Canon A-1 and the Nikon F-3HP and have found them to be clear and sharp. They are easy to use and usually at a better price than Canon and Nikon lenses. As a Crime Scene Photographer for the Bristol Tennessee Police Department I became very adept at 1: 1, micro, and macro photography which has carried over into my retirement years as a hoby.
Pros: Consistent Output, Durable, Easily Interchangeable, Fast / accurate auto-focus, Lightweight, Rugged, Strong Construction
Excerpt: If you are into macro photography this lense is clear and sharp & easy to use. It is easy to manually focus and quick when you want to use auto focus. I was a CSI photographer before I retired from the Police department and that requires clear & sharp 1: 1 ratio photography as well as micro photography. I only wished I would have had this lense back then.
Pros: Consistent Output, Durable, Easily Interchangeable, Fast / accurate auto-focus, Lightweight, Nice Bokeh, Rugged, Strong Construction
Excerpt: Advanced Amateur lens was purchased mainly for product pictures to be used in internet websites. Image quality exceeded my expectations. Tack sharp and able to obtain a very shallow depth of field.Great Bokeh. Build quality seems solid for a lens in this price range. I have the same issue of focus seeking in macro but I would not fault the lens for this. When I use under high light conditions it seems to lock right on.