Thypoch Simera 50mm F1.4

The Thypoch Simera 50mm F1.4 is a manual-focus full-frame normal lens for Leica M and Nikon Z mount. The Leica M version came first, and a Nikon Z version followed in September 2025, according to PhotoRumors. It targets everyday photography where a natural perspective and a fast aperture matter, with a close focusing limit designed for rangefinder use.

Optical design

Thypoch lists 8 elements in 6 groups, including 1 aspherical element, 1 ED element and 3 high-refractive-index elements. The company says these correct spherical and chromatic aberration and field curvature. Built-in floating elements help resolution at the 0.45 m minimum focusing distance, where Thypoch quotes a maximum magnification of 1:6.4. According to Thypoch, many M-mount 50mm lenses stop at 0.7 m. The aperture has 14 blades and closes down to F16, and Thypoch quotes a light transmission of up to T1.5.

Focusing and handling

Focusing is manual. The aperture ring switches between click and declick positions, which helps in video use. The focus ring has a tactile resistance point at 0.7 m, signaling rangefinder users to switch to the electronic viewfinder or live view for closer distances. The angle of view is 45 degrees diagonally, 38 degrees horizontally and 26 degrees vertically.

Build and size

The lens has a 54 mm front diameter and a 49 mm filter thread. The Leica M version weighs about 281 g and is 53 mm long without the lens shade, the Nikon Z version about 309 g and 64.8 mm. The image circle is 43.2 mm for full frame. The finish is available in black or silver on the M version.

Where it fits

In the Leica M segment of the database, the Leica Summilux-M 50mm f/1.4 ASPH (2023) is the direct comparison at 337 g and the same 45 cm minimum distance. The Voigtländer 50mm F1.5 Nokton VM II is lighter at 255 g but slower, and the TTArtisan 50mm f/1.4 ASPH is another F1.4 option. Slower and lighter Leica options include the Summarit-M 50mm F2.4 ASPH at 190 g. The Nikon Z version has no autofocus, so users who want that should look at the Nikon Nikkor Z lenses in the database.

Pros and cons

Pros

• F1.4 at 281 g on Leica M
• 0.45 m close focus with 1:6.4 magnification
• 14-blade aperture and click/declick ring
• Same optical design on M and Z

Cons

• Manual focus only
• Only two mounts
• No weather sealing stated
• Heavier and longer on Nikon Z than on M

Verdict

The Simera 50mm F1.4 offers a fast normal lens with a close focusing limit for Leica M and a manual-focus option for Nikon Z. It suits users who want manual control and compact size.