I'll go ahead and rate this based on what most people want to know: Yes, it's pretty sharp, even wide open. Edge sharpness is not bad considering the price. At f/1.8 vignetting is minimal, but at f/4 it disappears completely. But even with an open aperture it doesn't matter. It's quite a large lens, but it's also light. It's primarily plastic for the body, with a metal bracket and metal-plastic composite elsewhere. It doesn't look like a tank and doesn't feel particularly cheap. Easy to handle with the A7 series case, but can be a bit unbalanced with the A6000 series case. The focus ring is a little loose, but it rotates easily and is easy to use. It just makes a clicking sound as the ring slides back and forth as the lens is tilted. To clarify, it makes no noise and has no problems when it comes to actually focusing. It is free in terms of front and back. It has electrical contacts with the camera, so you can control the shutter electronically. In addition, aperture value and focal length information is passed to the camera for taking EXIF images. This is a big step forward for manual focus lenses. The only real downside to this lens - and I expect it will be fixed in a firmware update - is that it doesn't work AT ALL when mounted on an IBIS IBIS body. This is very strange, but I've seen many other reviewers confirm this. I assume that MEIKE will fix this problem with a firmware update. The quality of the lens is better than it's worth, so I definitely rate it as excellent value for money. The attached image was taken with a Sony A7III and is 100% near center. Original picture.
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