SMC Pentax-M 28mm f2.8  type_Film Cameras an improbably fast telephoto lens

an improbably fast telephoto lens for Canon EOS film and digital cameras

ideal for night photography and other demanding low-light applications

8 constant aperture

Standard 1/4"x20 thread for camera mounting

Zuiko lens and shutter speeds from 1/15s to 1/500s

SMC Pentax-M 28mm f2.8 &nbsptype_Film Cameras an improbably fast telephoto lensSo we're right up front about it: This lens has a stiff aperture control ring. No, that's not how it's supposed to be, but that's the way it is. However, the glass is clean and imaging is excellent. If you don't mind a bit of extra exercise when you're changing apertures, this is a nice little wide angle lens in otherwise fine shape.