I bought this for my Lumix Gx85 because I need a manual focus macro lens. The supplied lens was only equipped with autofocus. Not only does this lens have manual focus, but it also has an F-stop dial. Focus adjustment seems smooth. The lens also has a good weight. I use this lens on my camera which I use as a webcam. So I've only used this lens for video and from what I've seen the quality looks great with no distortion. I am very happy with this lens and would recommend it to anyone looking for an inexpensive manual focus close-up lens.
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