This is a RF lens and it will work well only with RF or mirror-less cameras.
With the SLR, DSLR camera, this lens will work as macro only.
The device came into serial production at the FED camera factory in Kharkov for Zorkiy and FED cameras.
The Industar-26 M (Индустар-26М) 52 mm f/ 2.8 does not handle well side and back light.
It is recommended to use it with a hood.
Serial number: The multilot is sold and the serial number of the lens is sent to my discretion.