I suspect anyone interested in purchasing this lens has read most of the reviews in places like DPReview. They praise the lens as long as the sun is out of the frame (i.e. lens flare is a problem for it, and for all fast ultra-wide angle lenses in fact). I've used this lens to take several hundred shots and agree with their results. I had no issues with flare and I find this lens amazing for an f2.8 ultra wide lens. One thing I noticed while using the lens is that the lens doesn't feel as big and heavy as many people think. It's about 40% smaller and lighter than the equivalent Canon or Nikon lens and fits well with my E-M1 and E-M5 Mark II. Shooting with an ultra-wide lens is always a challenge because of the perspective. Olympus OM-D bodies offer keystone control (ie perspective control), making shooting with this lens much easier. I set the function button on my lens to keystone correction and found the lens to be a pleasure to use.
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