Summary: I paired this Sigma 19mm and the 30mm with the Panasonic 45-150 for a well-rounded set of focal lengths with similar quality (metal/brass mounts, polished metal finishes on top, and modest apertures).
Summary: This is a cheap and great lens, working just as well or better than my other lenses, which cost me $450 and $600. Its relatively wide aperture makes it great for low-light shooting, and the field of view is wide enough to capture everything I want to.
This Sigma 19mm is and excellent lens for sharp images.
2 March 2015
Summary: This Sigma 19mm I bought is a first class lens for M4/3, in third party quantitative tests the lens performed well and this tipped the balance towards this particular lens. Also, I already own the Sigma 30mm and the 60mm, both excellent lenses.
Excerpt: So far I'm really liking the 19mm Art lens. Nice field of view and sharpness. Used it for bird shots, landscapes, and night photography. Great walk around lens! Some of my photos taken with it will be publishied in a regional mag I write for next month.