SMC Pentax-M 40mm f2.8  type_Lens Cap with only very minor haze

with only very minor haze in the front cell

and you need to baby it a little more than you might expect

with a pair of roomy side pockets and a main compartment measuring approximately 10x17x17cm

This lens will not cover 4x5- it will definitely cover 6x9cm medium format or smaller

SMC Pentax-M 40mm f2.8 &nbsptype_Lens Cap with only very minor hazeThe SMC Pentax M 40mm f2. 8 is a very, very tiny pancake lens for Pentax K mount cameras. It's under 2cm long, and it still packs a real mechanical aperture control and a smooth moving focusing ring. Use it on any Pentax K mount camera, film or digital. In good cosmetic condition, with light paint and finish wear; clean glass, with minor dust.