This unique pancake-style standard lens with a 40mm focal length is offered with exclusive optical characteristics and a very high luminous intensity. Measuring just 15mm in length, find exceptional sharpness and image quality in this incredibly compact lens that’s ideal for travel and casual everyday snapshots. Its high-grade aluminum construction provides the utmost durability and elegant design, now further enhanced with treatments of both SP (Super Protect) and the PENATX-original High-grade multi-layer HD (High Definition) coating. A round diaphragm at a wide aperture offers optimal optic performance and gorgeous bokeh effects.
Lens MountPENTAX KAF mount
Model No.21390 – Black 21400 – Silver
Focal Length40mm (61mm in 35mm format)
Lens Construction [Elements/Groups]4 groups 5 elements
NotesHD coating Super Protect (SP) coating Rounded aperture (F2.8 to F5.6) Quick-shift Focus System MH-RF49 metal lens hood included
Angle of View39°
Min. Aperture (f)F22
Min. Focusing Distance0.4m
Max. Magnification0.13X
Filter Size49mm (or 30.5mm mounted in hood)
Diameter & Length (mm)63mm x 15mm
Weight (g)89g w/o hood 98g w/hood
Diaphragm controlFully Automatic
Number of aperture blades9
