SMC Pentax 28mm f3.5 viewing filter Interior dimensions are approximately 16x16x28cm

Interior dimensions are approximately 16x16x28cm

1/4" thread top and bottom for camera and leg mounting

they form a potentially useful accessory which I have been told bears a cursory resemblance to a gorilla

The Yashica ML 50mm f2 is a compact "standard" lens for the Contax/Yashica SLR mount

and the third dial to 0

SMC Pentax 28mm f3.5 viewing filter Interior dimensions are approximately 16x16x28cmThe SMC Pentax 28mm f3. 5 is a wide angle lens for K mount from Pentax's original K mount line, before they started doing in the "Pentax M" thing. Larger and heavier than later models, this is still a reasonably compact lens. Cosmetic condition is very good, with light paint wear. Smooth focusing, good diaphragm, light internal dust.