Mamiya RB67 Metered Prism Viewfinder lens mount_Exakta This full-frame lens will work

This full-frame lens will work with any Nikon SLR that allows in-camera aperture control (it does not have a mechanical aperture ring) and will autofocus on any Nikon SLR that has a built-in focusing motor

ergonomic controls

The Nikon 18-140mm f3

and compatibility with any Pentax K-mount lens

but nothing dramatic

Mamiya RB67 Metered Prism Viewfinder lens mount_Exakta This full-frame lens will workThis Mamiya RB67 metered prism finder is a 45 degree pentaprism design with a built in (and accurate!) light meter with a big dial that reads out shutter speed and aperture combinations no EV numbers to convert. In excellent condition, with minor internal dust, very minor cosmetic surface wear.