Zeiss's manual-focus Biogon 35mm f/2 for Sony FE — wide-angle Loxia with classic Zeiss rendering.
The ZEISS Loxia 35mm f/2 Biogon T* is a manual-focus prime for Sony FE full-frame bodies, based on the Biogon optical design. No autofocus motor — all focusing is manual with electronic contacts for EXIF data and in-camera focus confirmation. The aperture ring de-clicks via a tool-operated screw for smooth video aperture pulls. At 340g and 52mm filter thread it is compact. 0.30m minimum focus distance.
The optical design uses 9 elements in 6 groups (Biogon design optimised for Sony FE flange distance). Ten rounded aperture blades. The 52mm filter thread is compact. At 340g the lens is lightweight. Minimum focus distance of 0.30m. Manual focus only — no AF motor. Electronic contacts for EXIF recording and in-camera MF assist. De-clickable aperture ring via included tool.
The Biogon design provides the near-symmetrical element arrangement associated with low distortion and even illumination on wide-angle focal lengths — characteristics relevant for architecture, interiors, and documentary photography where straight-line rendering is important. On Sony FE bodies, manual focus is supported by focus peaking and EVF magnification. The de-click aperture enables smooth exposure pulls in video without the click detents audible on-microphone.
On the used market the ZEISS Loxia 35mm f/2 Biogon is available at mid-range manual-focus Sony FE prime pricing. Condition checks: manual focus ring smoothness, de-click screw mechanism operation, 52mm front element for marks, and electronic contact function. Manual focus only — no AF. Compatible with all Sony FE-mount full-frame and APS-C E-mount bodies.