Excerpt: I'm fairly new to documentary film making and in particular, the M43 format. I needed something quite fast to compensate for the low light issues of GH4. This lens met all my criteria. Looks good, does what it needs to!
Pros: Fast / accurate auto-focus, Nice Bokeh, Strong Construction
Excerpt: This lens is light, sharp, quick, bright. I can't say enough good things about it. I had to order an ND for it though, to shoot video at 50th shutter speed in bright sunlight. All I needed was one stop so a 0.3 ND was perfect.
Pros: Consistent Output, Easily Interchangeable, Fast / accurate auto-focus, Lightweight, Nice Bokeh
Excerpt: I read great things about this lens, so I got a used one on eBay. I thought that it would have considerably better resolution and clairty than my current 14-45mm zoom lens. I took test photos from both lenses, with the zoom lens set at 25 mm. And both lenses were set in the neighborhood of f/4.
Excerpt: My primary weapon is my E-M1 with grip loaded with either the 12-40 F2.8 or my new behemoth 40-150 F2.8. But I also carry an E-M5 loaded with a prime lens for targets of opportunity at weddings and indoor events. For all things indoor natural light, this lens is my goto glass.
Pros: Consistent Output, Durable, Easily Interchangeable, Fast / accurate auto-focus, Lightweight, Nice Bokeh, Rugged, Strong Construction, The Bomb
Excerpt: Perfect match to my Olympus E M5. Fast, accurate focus in high and low light. Clean, lovely images at all apertures. The Olympus lens stabilisation and the low light performance of the Summilux are a fantasy to this old shooter who grew up pushing Tri-X and shooting the Leica at 1/15.
Pros: Consistent Output, Durable, Easily Interchangeable, Fast / accurate auto-focus, Lightweight, Lovely images, Nice Bokeh, Rugged