I bought this lens from Revain Market Place two months ago for use on an Olympus E-3. I've also had a newer version of the lens for a few years and use it on other E-3s and E-620s (all bought from Revain). The old lens focuses just as quickly as the new one and both lenses have the same sharpness. Each lens is a great upgrade to a 14-42mm kit lens for a 4/3 camera, but the old version can be bought for less than half the price of the new version. Highly recommended.
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