Excerpt: I just finished up shooting a documentary in India where we used two of these lenses. We brought some primes thinking we would use them for shots on sticks for higher quality, but this lens gave us the same results as the expensive primes and far more flexibility.
Summary: Excellent Lens for my GH4, no chromatic aberrations, very sharp at 3.5 and sharp enough at 2.8 wile shooting at 4K. In the GH4 you have a lens that can compete with Canon's 24-70 L Lens for about $500 less. I added a Variable ND filter and you have a great all around lens for micro 4/3 cameras.
Excerpt: Amazing wide lens for MFT format ! Bright and sharp. having the zoom on a lens this light is a great bonus but if you need to get really close or like extreme DOF you'll need something above the 35mm. Autofocus is fast and dependable.
Excerpt: I finally bit the bullet and forked over the cash for this lens after thinking about it for a year. I'm so glad I did because it's a great lens. I love the constant aperture throughout the range. Works fairly well in low light conditions. Very solid construction.
Pros: Consistent Output, Durable, Easily Interchangeable, Strong Construction
Excerpt: Recently I purchased a Panasonic GH4, mostly for video (to replace a Sony FS100). I have a full range of Nikkor lenses and will be using them with a Speed Booster, and plan to get the set of fast Voigtlander MFT lenses.
Pros: Consistent Output, Durable, Easily Interchangeable, Fast / accurate auto-focus, Lightweight, Nice Bokeh, Rugged, Strong Construction