Nikon MF-21 brand_Calumet Shutter speeds and metering are

Shutter speeds and metering are accurate

5 Super-Takumar lens in good cosmetic condition

It's a full frame lens

Includes the standard rear-mounted UV filter

with a serial number engraved on the focusing track

Nikon MF-21 brand_Calumet Shutter speeds and metering areNikon MF 21 Multi Control Back for the Nikon F 801 N8008. This back enables an interval timer, automatic exposure bracketing, long exposures up to just shy of 100 hours, focus trap release, and uh, you can print a date on your picture too. That's actually a fair bit of extra functionality for a back! In excellent condition, with minor wear. Requires two CR2025 batteries (not included)