===== GL Optics ZEISS Jena APO 50mm T1.9 ===== {{:lens:screenshot_2025-07-14_1.18.44_pm.png?400|}} ==== Summary ==== The ZEISS Jena APO primes are a distinctive series of lenses developed by Carl Zeiss Jena, a renowned optical manufacturer based in East Germany during the Cold War era. Following the division of Germany after World War II, Carl Zeiss was split into two separate entities: Carl Zeiss Jena in East Germany and Carl Zeiss Oberkochen in West Germany. This division led to the development of different lens technologies and designs on either side of the Iron Curtain. ==== Tech Specs ==== | Manufacturer |GL Optics| | Series |Prime| | Model |ZEISS Jena APO| | Focal Length |50mm| | Max Aperture |T1.9| | Min Aperture |-| | Format |-| | Image Circle |ALEXA 35 Open| | Minimum Focus |11in| | Focus Rotation |180°| | Iris Blades |15| | Optical Design |-| | Squeeze |-| | Front Diameter |110mm| | Filter Thread |-| | Focus/Zoom Rod |-| | Native Mount |PL, LPL, EF, E| | Data Protocol |none| | Length |-| | Weight |1.10kg| | Body Telescope |-| | Body Material |aluminum| | Focus Drive |manual| | Iris Drive |manual| | Zoom Drive |n/a| ==== History ==== Country of Origin: - \\ Release Date: - \\ Launch Price: - \\ Design Revisions:\\ ==== Service ==== Service Manual: (Insert link to manual here) \\ \\ Full CLA: **#hrs.**\\ Enter relevant notes here\\ ==== Notes ==== ==== Media ==== {{ :lens:glo_brochure_lens_sets_zeiss_jena_apo.pdf |}}