I bought this lens to be used with an Olympus E-M1 micro 4/3 and I'm not disappointed, it's a good combination. This is a very decent wide angle lens with very little distortion at 9mm. I find it great for indoor shots where a wider angle but no distortion is desired. Incredibly small, light and pleasant to the touch. Pretty well done. The lens is locked during use and the release button closes it after use.
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