===== Pentax SMC 50mm f/1.4 ===== {{ :lens:pentax_smc_50mm_f1.4.png?250|}} ==== Summary ==== The SMC Pentax 50mm f/1.4 is the original bayonet-mount iteration of Pentax’s legendary fast standard prime, produced from 1975 to 1977 as part of the K-series—the first generation of K-mount lenses following the M42 Takumar era. It shares the same 7-element, 6-group optical formula as its M42 predecessor, the SMC Takumar 50/1.4, but introduces a more modern mechanical design tailored for the new K-mount system. This version features Super Multi-Coating (SMC), an 8-blade automatic diaphragm, and stops down to f/22. It focuses as close as 45cm, delivers 0.15× magnification, and uses a 52mm filter thread. The lens measures 63 × 42mm, weighs 265g, and includes a metal barrel, engraved depth-of-field scale, and a smooth, long-throw focus ring that’s widely praised for its tactile precision. There’s no “A” setting on the aperture ring, so it’s best used in manual or aperture-priority modes on compatible bodies. ==== Tech Specs ==== | Manufacturer |Pentax| | Series |K Series Prime| | Model |SMC| | Focal Length |50mm| | Max Aperture |f/1.4| | Min Aperture |f/22| | Format |Full-Frame| | Image Circle |-| | Minimum Focus |45cm| | Focus Rotation |°| | Iris Blades |8| | Optical Design |7/6| | Squeeze |none| | Front Diameter |63mm| | Filter Thread |52mm| | Focus/Zoom Rod |none| | Native Mount |Pentax K| | Data Protocol |none| | Length |42mm| | Weight |265g| | Body Telescope |-| | Body Material |-| | Focus Drive |-| | Iris Drive |-| | Zoom Drive |-| ==== History ==== Country of Origin: \\ Release Date: 1975 \\ Launch Price: \\ Design Revisions: \\ ==== Service ==== Service Manual: (Insert link to manual here) \\ \\ Full CLA: **TBD hrs.**\\ \\ ==== Cine-Mod ==== Focus Ring O.D.: -\\ Zoom Ring O.D.: -\\ Iris Ring O.D.: -\\ De-click Y/N: -\\ Additional Notes: \\ ==== Notes ==== ==== Media ====