Summary: Initially I thought I bought the best lens so far. It was sharper than my 50 mm Canon f1.8 lens. Then one day while I was shooting I forgot to tighten one of the legs on my tripod. My camera with Sigma 70mm attached to it fell down on the wooden floor. The lens had the hood attached to it. So it didn't hurt any of the glass part or the front part.
Good for product photography, but not for 1:1 macro
David Siegfried, Amazon
26 April 2013
Summary: I purchased the Nikon mount version of this lens, primarily for product photography in a tight space. It works really well for that, as it focuses seamlessly from infinity down to 1:1 macro magnification with no breaks, or gaps in the field of view, that you might get using a macro ring. And it doesn't make you switch to a special "macro mode" as some zoom "macro" lenses do. This lens simply allows you the freedom to shoot at literally any distance you want.
Excerpt: I tried different macro lens from Canon 100mm L and Canon 60mm Macro but this one is the sharpest. Nice bokeh too for portrait shot. No regrets in buying this lens. Auto focus is slow but it is accurate no complain about it.
Pros: Durable, Lightweight, Nice Bokeh, Strong Construction
Excerpt: I got this lens for its macro capabilities and medium lenght. Also I shoot with a full frame camera and a cropped sensor camera so it is compatible with both. The lens is sharp and light. I would recommend this lens however its biggest draw back is that the lens is super loud! Like crazy gear grinding loud. Also the focus is not built into the lens but "zooms" out to focus.
Summary: I recently bought this lens for myself for a birthday present. I was iffy at first since it's an "off brand" but once I got to using it, I couldn't be happier. It's a little harder to focus clearly than a Nikon lens, but it just makes me try harder with my skills!
Rediculously Sharp, Accurate AF, Great Focal Length on crop sensor!!
Jayman "MacGyver", Amazon
8 September 2012
Summary: Let me first echo what just about every other personal and professional reviewer has said about this lens. "This is probably the sharpest lens in my bag or that I've used." Yes it is sharp, I mean very sharp. This Sigma 70mm macro out resolves my 12mp Nikon d90 easily. My computer screen and d90,(nice screen), usually pix-elate and fall apart long before the detail that this lens resolves. Any shortcoming in image quality is mostly attributed to user error.
Excerpt: This lens has the sharpest focus of any lens I have tried in this range. It is fast focusing in either manual or auto focus. Used an array of different types of photography is has performed flawless. If there was one thing that is a draw back to this lens it would be that if you use the auto focus at the highest macro settings the motor hunts focus.
Pros: Consistent Output, Fast / accurate auto-focus, Rugged, Strong Construction
Excerpt: I've only used it for macro so far and the images are superb. It's definitely slower to focus compared to my L series lens, but using the limit feature does help. I had one other Sigma lens and was not very impressed, but based on other reviews I decided to give this lens a try. So far, I'm glad I did.
Pros: Consistent Output, Lightweight, Strong Construction
Excerpt: I bought this lens on a whim, while shopping for a totally different type of lens that would serve a completely different purpose. It wasn't because they were related, it was purely because of the quality of the sample pictures, the usefulness of the Macro from photo projects, the opportunity to learn something new, and how sharp the lens was reported to be. This lens is very sharp, and a very good macro on a crop-body DSLR.
Pros: Consistent Output, Durable, Nice Bokeh, Strong Construction