Thypoch Simera 50mm f/1.4

Thypoch Simera 50mm f/1.4

The Simera 50mm f/1.4 is the fast normal prime in Thypoch's Simera line of manual M-mount lenses, and it arrived as a refinement of the design ideas the company first introduced with its Simera 28mm and 35mm f/1.4 lenses [1]. Its most distinctive practical trait is a minimum focusing distance of 0.45 m, well inside the 0.7 m limit common to most fast 50mm M-mount lenses, achieved with a floating-elements optical design that keeps performance consistent as the lens is racked closer [1][2]. Reviewers who compared it to the Leica 50mm f/1.4 Summilux-M ASPH noted that the optical layout follows a closely related design philosophy, although the two are not identical [3].

The optical formula uses 8 elements in 6 groups, with the floating front block moving outward on focusing while the rear group stays fixed, so the external length of the barrel does not change and a mounted filter does not rotate or extend [1]. Build is all-metal with engraved, paint-filled markings, and the lens carries Thypoch's "Visifocus" depth-of-field scale, which uses red dots that appear as the aperture is changed [1]. Focusing is fully manual and rangefinder-coupled; the focus ring has a distinct click stop at 0.7 m to signal the edge of the coupled range, and Thypoch lists a coupling-limit reminder at that distance for close focusing beyond it [1][2]. The 14-blade aperture is operated by a ring with a de-click lever, allowing both clicked stills use and smooth, stepless adjustment for video; the click spacing is not uniform across the range, mixing third, half, and full stops [1]. The manufacturer quotes a maximum light transmission of about T1.5 [2]. The lens accepts 49 mm filters and ships in black and silver finishes, with a rectangular hood; on this 50mm the front ring is painted to match the barrel rather than using a chrome ring like the 28mm version [1][2]. Being M-mount, it can also be adapted to mirrorless bodies such as Sony, but because of the floating design the correct adapter register matters [1].

As a current production lens introduced in 2024, the Simera 50mm f/1.4 does not yet have a documented history of optical revisions or major factory special editions. The main practical variation is finish, black or silver, both sharing the same optical and mechanical design [2].

Optical qualities

Rendering Independent testing describes a modern, well-corrected rendering rather than a vintage look, with smooth and largely undistracting out-of-focus areas [1]. The lens shows good central and mid-frame sharpness from f/1.4, with the extreme corners benefiting from stopping down to roughly f/8 to f/11, and it holds up well at portrait and close distances [1].

Bokeh and transitions The out-of-focus rendering is smooth and modern, and the floating-elements design combined with the short minimum focus distance gives a clear definition of the focal plane and a pleasing focus-to-defocus transition [1].

Distortion and aberrations Distortion is very low, low enough that reviewers found no need to correct it on sample images [1]. Lateral chromatic aberration is minimal, while longitudinal CA and purple fringing are present wide open and only average for a fast 50mm, not fully cleared by f/2 [1]. Coma correction is modest, with visible deformation in the corners from f/1.4 through about f/2.8; no field-relevant focus shift was observed, which is helpful for rangefinder use [1].

Flare resistance and sunstars Flare resistance is generally serviceable, with some veiling flare when shooting into the sun and the possibility of larger artefacts when a bright point light sits in the corner of a stopped-down frame [1]. Despite the high blade count, the diaphragm produces well-defined sunstars with even rays from roughly f/4 onward [1].

Collector and user notes The aspherical element is described as very well polished, with onion-ring structures in out-of-focus highlights hard to detect compared with several competing fast 50mm lenses [1]. Reported handling caveats include a short focus throw between 0.45 m and 0.7 m, some rangefinder-finder blockage especially with the hood fitted, and reviewer preference debates around the Visifocus scale [1].

Sources

• [1] Phillip Reeve (Bastian Kratzke). Review: Thypoch Simera 50mm 1.4. https://phillipreeve.net/blog/review-thypoch-simera-50mm-1-4/
• [2] Thypoch. Thypoch Simera 50mm F1.4 Leica M Mount Manual Camera Lens. https://store.thypoch.com/products/simera-50mm-f-1-4-m-mount
• [3] Leica Rumors. Thypoch Simera 50mm f/1.4 ASPH lens review (M-mount). https://leicarumors.com/2024/11/18/thypoch-simera-50mm-f-1-4-asph-lens-review-m-mount.aspx/