SMC Pentax-M 40-80mm f2.8-4 brand_Zeiss providing glare control with a

providing glare control with a nice boost in colour contrast

approximately 7000 actuations

and while we can't determine actuations on these cameras

the active chemistry is vitamin C and Phenidone

and the hood- while functional- does have a crack at its base which affects its ability to reverse-mount to the lens (but does not affect normal mounting when in use

SMC Pentax-M 40-80mm f2.8-4 brand_Zeiss providing glare control with aThe SMC Pentax M 40 80mm f2. 8 4 is a "standard" zoom lens with a slightly unusual range of focal lengths and a not too bad "macro" mode that provides up to 1: 4 magnification. In very good cosmetic condition, with light paint wear, most notably at the front rim.