Excerpt: Great lens for the GM5. Nice and compact, great optics, sharp, and perfect for scenic/street photography. Now I can carry a tiny camera that takes great pictures and with an aperture of F1.7 can create a shallow depth of field.
Pros: Consistent Output, Durable, Fast / accurate auto-focus, Lightweight, Rugged, Strong Construction
Excerpt: This lens is has extremely fast AF on my panasonic G7. Couple with Depth of Defocus, this special AF will only work on specific Panasonic Bodies. However, I hear it's also fast on Olympus cameras. The aperture is wide enough to get some bokeh separation for half body shots.
Pros: Durable, Fast / accurate auto-focus, Great Image Rendition, Lightweight, Nice Bokeh, Strong Construction
Summary: I bought this with the Panasonic GF7 on the advice of a friend who owns many cameras. I am tired of point and shoot and don't really want an slr. My friend said this lens would get every shot I want within reason. He was right. Low light, bright light. Auto focus is great. Very pleased.
... for both stills and video images and I'm quite pleased with its performance
Camarones Jones, Amazon
24 June 2015
Summary: I have been using this lens with my Panasonic GH4 for both stills and video images and I'm quite pleased with its performance. The focus ring is smooth for those who prefer to focus manually. Panasonic calls it a Summilux, which in Leica terms typically means an f/1.4 aperture.
Summary: Don't let the tiny size of this lens fool you. It is very solid and provides creamy bokeh that Leica is famous for. It's a pricey little lens but for low light situations it comes in extremely handy.