Excerpt: This lens makes a great general purpose lens when zoom is not required. The quality is a bit better than your average chinese made, panasonic lenses for micro four thirds systems out there. It is light weight and compact.
Pros: Consistent Output, Durable, Fast / accurate auto-focus, Lightweight, Strong Construction
One of the best lenses for the money glad I bought it
13 April 2014
Summary: I have this for my Sony NEX to replace the kit lens and it is great. Color and contrast, C/A and vignetting control are superb compared to the kit lens. The only thing is that it is a pretty long lens. Plus although it resolves much more detail than the kit 16-50mm lens it's only 5-15% sharper. Maybe I got a soft copy because this lens should be even sharper for a prime but it's not as bad as the kit lens.
Excerpt: I wanted a prime at a good general-purpose focal length. It was between this and the panasonic 20mm f1.7, but the latter cost much more. I saw the Sigma used here at Adorama and got it. Very pleased with the service and product. The lens arrived a couple days early and is in excellent condition. Not sure the image quality is that much better than my kit zoom, at 19mm, but maybe a little.
Summary: I received this as a birthday gift and immediately began using it. My observations are not scientific but those of an artist and fine art photographer. The lens is crisp and focuses very close allowing me to do beautiful closeups. I am sure I would be able to do true macro shots with the aid of an adapter. but the point is that this goes in very close. It is very modern and sleek in appearance and the focusing ring is nimble and easily moved without being loose.
Good little lens but beware Warehouse discounted products.
I. Clements, Amazon
4 March 2014
Summary: I got one of these through Amazon warehouse. The one I received was missing both front and rear caps, Even though boxed correctly. The front element was covered in dust and fingerprints! I returned that one and got a "new" lens that is working just fine thank you. This is more a warning for anyone getting something through Amazon warehouse. They clearly don't do a very good job inspecting the items they take in.
Summary: This was my first prime lens for my E-PL2 in the native M4/3 format to get away from kit zooms. Soon afterward bought its larger 60mm DN cousin. I've since upgraded to an E-PL5 and this is still my most used lens. These sigma lenses are crazy sharp with great contrast and color rendition, superior to kit and to other SLR primes I've used with a M43 adapter.