The adapter is used on a Lumix GF6. It is made entirely of metal, is very valuable and fits 100% exactly on the mft connection. Glides smoothly into the snap-in point on the camera body with a soft click. Nothing wobbles and everything is tight without any play. It's the same on the lens side. With a soft click, the lens snaps into place without binding. It can be released just as easily by gently pressing the release button. I've been using this adapter for about 3 weeks now and have taken about 500 photos with it. The resulting images are great. I can't report any flat images, lack of contrast due to any areas where light could enter the adapter. On the contrary, depending on the camera setting, the images are crisp and sharp, with a nice bokeh, or, or, or. I mainly use a Minolta MC Rokkor PG. 1:1.4 - f: 50mm. You can even activate the magnifying glass function with a tap on the touch display, so that the subject can be sharply enlarged without any problems. It may be that the more expensive adapters, which are around €100, are of even better quality - but I can't imagine whether I could tell the difference in a blind test. I have absolutely nothing to complain about on this part and am very pleased to be able to use all of these old analogue lenses for a small fee. Among other things, I also have a Vivitar with f:100-300mm that weighs 904 grams, hanging on the adapter, and I then took pictures from the tripod. This almost kilogram of glass didn't impress the adapter in any way, the telephoto hung on the camera just as tightly and without play as the much smaller lenses and takes first-class pictures. Based on this experience, I can recommend the adapter without reservation.