Been seeing a lot of these generic 85mm f/1.8 prime lenses on ebay lately. Does anyone know anything about them? You'd think they'd have terrible optical quality being generic unbranded stuff from china but it's hard to know as nobody has written anything about them that I can find. (e.g.
https://www.ebay.co.uk/itm/85mm-F1-8-Portrait-Photo-Large-Aperture-Manual-Focus-Lens-for-Nikon-Cameras-/202159574225?_trksid=p2349526.m4383.l4275.c10)