When I ordered Panagor 90mm macro I ordered some cheap lenses too. This is one of them. Paid 20 Euro for it. First the worst point, CA wide open in bad lightning: That is 100% crop, image is fairly usable scaled down. I think put have not tested that CA can be removed in post prosessing. Resolution is fine wide open: 100% crop Flowers wide open: 25% scale Same flowers at aperture 5.6 25% scale And intended use (5.6): I think that this lens performs pretty well. It is mechanically very good, I can use one finger to focus it. My copy is in very good condition. Like new. Only minus is minimum focus distance of 1.3 m.