Thypoch Simera 75mm f/1.4 ASPH.

Thypoch Simera 75mm f/1.4 ASPH.

The Simera 75mm f/1.4 ASPH. extended Thypoch's fast f/1.4 Simera family into medium-telephoto territory, arriving as the fourth and longest lens in the line after the 28mm, 35mm and 50mm models [1][2]. Despite its 75mm focal length and full f/1.4 aperture, the design is unusually compact for its class, roughly the size of the Voigtländer 75mm f/1.5 Nokton and only modestly heavier [3]. It is the only Simera to use an aspherical element, and Thypoch builds it around nine elements in eight groups, including ED glass and high-refractive-index elements to control aberrations.

Mechanically the lens is all-metal with a black finish and a 58mm filter thread. It uses a 16-blade aperture intended to keep the iris opening near-circular when stopped down, and the aperture ring carries a de-click lever so it can be used clicked for stills or smooth for video. Reviewers describe the build as a step forward over earlier Simera lenses, with an even, pleasant focus action turning about 120 degrees from infinity to close focus. The optics use a front-focusing arrangement in which the rear group stays fixed while the rest of the cell extends as the lens focuses closer, an approach that supports performance at short distances. The barrel retains Thypoch's "Visifocus" depth-of-field scale, in which red dots open and close with the aperture setting rather than conventional engraved index lines. The lens is built in Leica M mount and adapts readily to APS-C and full-frame mirrorless bodies for manual-focus use. The focus ring includes a distinct click stop at the 0.7m position, marking the limit of the rangefinder-coupled range, with focusing able to continue to a closer minimum beyond it.

As a current-production lens introduced in 2025, the Simera 75mm has no established version history, special editions or collector variants yet. It shares optical engineering with Thypoch's Simera-C T1.5 cinema prime series.

Optical qualities

Rendering Reviewers characterize the Simera 75mm as a smooth, well-corrected portrait lens with strong subject separation and pleasant background blur. Thypoch markets it for a rendering with gentle focus fall-off and a sense of depth, and independent testing largely supports that description.

Sharpness Testing found very good sharpness across the frame from f/1.4 at most distances, with the main weakness being corners at infinity; no meaningful focus shift was observed on stopping down.

Bokeh and transitions The bokeh is described as very pleasing, and in side-by-side comparison with the Voigtländer 75mm f/1.5 Nokton the Thypoch produced slightly stronger blur and, in some scenes, higher contrast attributed to its floating-element design, with smoother rendering of complex backgrounds at longer distances.

Distortion and vignetting Distortion is minimal, which the reviewer noted as useful for film shooters, while vignetting was rated about average and broadly comparable to other fast 75mm M-mount lenses, easing substantially by f/2.8.

Flare resistance and aberrations Flare resistance, chromatic aberration correction and coma correction were each rated as average rather than standout, in line with the lens's price and class. The aspherical element is well polished, with no visible onion-ring texture in out-of-focus highlights.

History

Development and Launch Thypoch announced the Simera 75mm f/1.4 ASPH. in early 2025 as the longest member of its Simera prime series for M-mount full-frame cameras, following the 28mm, 35mm and 50mm f/1.4 lenses. The 75mm focal length and f/1.4 aperture positioned it as a fast portrait and medium-telephoto option, with the company emphasizing compact size, a 16-blade aperture and clean rendering.

Special editions No major factory special editions or limited variants of this lens are widely documented; it has been offered in a black finish, with silver shown in early press imagery.

Collector Notes Several published sources describe the Simera 75mm as a rangefinder-coupled lens with a focus range reaching about 0.6m, and review testing indicates the rangefinder-coupled range ends at a 0.7m click stop with closer focusing available beyond it; buyers should verify coupling behavior and the exact close-focus limit against the specifications recorded here before purchase. Because the lens is current and inexpensive relative to vintage M glass, originality and conversion concerns common to older lenses do not apply. Worth confirming with any purchase are the bundled hood and caps, since the lens is supplied with a removable hood.