I bought this lens to replace a 12-60mm f/3.5 kit lens (which was actually a pretty decent lens) and have no regrets. Images taken with this lens are very good in terms of color and image quality. It's a bit bigger and heavier than the stock 12-60mm lens, but it's fine in combination with my Panasonic G9. I've also used it on a small camera and it's been fine, although some might say the front end gets a bit heavy.
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