Excellent image quality with insufferably bad AF performance.
11 July 2013
Summary: It hurts me to dock this lens two stars because I've gotten some fantastic pictures with it. However, no other M4/3 lens has given me quite so much grief. As far as picture quality goes, refer to all the other reviews in here.
Summary: This 20mm f1/7 lens is what I reach for more than anything else; I've had more stellar pictures with this lens and it's so fun to use. The thin pancake profile is small enough to fit into a larger pocket (think jacket pocket rather than jean pocket) when paired with a GF1/GX1.
Near Perfect lens, especially with the digital zoom
8 June 2013
Summary: My wife complained that my full Nikon DSLR gear was too heavy, and she wanted something lighter, and so I bought her a micro 4/3rds system. In doing so, I did a bit of research and wanted to find a light prime lens for her; and this lens fit the bill.
Summary: I don't know anything about lab measurements; I just know what is pleasing to my eye, which are pics that are razor sharp throughout, resolve the most detail, contain accurate colors, and have little noise. I sold my Nikon D5100 and all my Nikon lenses and bought an Olympus OM-D and this lens.
Beautifully imperfect. A masterpiece of lens design.
6 January 2013
Summary: I got this lens with GF-1 long time ago, and I now believe this is a master piece of lens design. I have had so many lenses in my life. Zeiss, Leica, Mamiya, Canon, Nikon, and more, but there are so few lenses that I didn't end up selling, and I still keep this lens.
Summary: Hard call between this and the Olympus 45mm 1.8 as my favorite m4/3 lens. This is what I have on my OM-D 75% of the time. I'm not much of a geek for the numbers so I won't comment on that. What I will say is that I love the sharp images I can get using this lens and the ability to work in low light.
Summary: I'll admit it: I'm a Canon "L" lens snob... I don't settle for less and I normally use a 7D with only "L" lenses... but I've grown weary lugging my gear everywhere and wanted a smaller camera so I could carry one with me at all times. Enter the Oly E-PM1...
A little slow on focusing, but amazing in low light
Brandon Zehm, Amazon
25 June 2012
Summary: I've only owned this for a two weeks now. A few observations: - The focus is quite a bit slower than the Panasonic 14-140 lens. It's not too bad, but you don't even have to wait for the other lens.
Summary: I enjoyed this lens' image quality, but the AF on the GX1 and GH3 just killed it for me. It was frustrating to miss certain moments due to the lens searching and then missing focus. It'd be a great lens if you mostly photograph still subjects, or slow moving subjects.