Thypoch Eureka 50mm f/2 Aluminium is a full-frame manual Leica M lens that pairs a 1950s-inspired collapsible construction with modern optics. Its anodized aluminium-alloy housing keeps the lens itself to approximately 120g; it is only 27mm long when collapsed and 41.2mm in use. The natural 50mm angle of view, f/2 maximum aperture and 12-blade diaphragm make…
Thypoch Eureka 50mm f/2 Aluminium is a full-frame manual Leica M lens that pairs a 1950s-inspired collapsible construction with modern optics. Its anodized aluminium-alloy housing keeps the lens itself to approximately 120g; it is only 27mm long when collapsed and 41.2mm in use. The natural 50mm angle of view, f/2 maximum aperture and 12-blade diaphragm make it an exceptionally compact tool for street, portrait, documentary and travel photography.

Eureka 50mm f/2 · Leica M
The aluminium Eureka combines a compact vintage character with an approximately 120g lens weight. Its barrel retracts to 27mm for storage and extends to 41.2mm for shooting.
Useful information from the original copy is retained: Eureka 50mm provides a natural, human-eye-like perspective for intimate portraits, documentary work, street scenes and landscapes. The classic six-element, four-group Double Gauss construction is paired with modern coatings; the manufacturer specifies an ED element to reduce chromatic aberration and an HRI element to correct field curvature and spherical aberration.
The f/2 maximum aperture and 12-blade diaphragm help create a soft, circular out-of-focus rendering. This is a manual lens: focusing remains direct and tactile, with no electronic image stabilisation.


The manufacturer diagram shows a classic 6-element, 4-group Double Gauss design. One ED and one HRI element help correct chromatic aberration, field curvature and spherical aberration, while the MTF chart describes contrast transfer across the image field.
| Manufacturer: | Thypoch |
| Category: | Lenses |
| Minimum Focusing Distance | 900mm |
| Number of aperture blades | 12 |
| Lens diameter | 35.9mm |
| Lens Length | 41.2mm |
| Bayonet | Leica M |
| Tilt Shift | No |
| Lens color | Silver |
| Lens Type | Fixed Glass |
| Extender | No |
| Lens suitable for | Full frame |
| Aperture (f) | 2 |
| Focal length | 50mm |
| Optical stabilisation | No |
| Auto focus | No |
| Zoom | No |
| Anamorphic | No |
| Macro | No |
| Weight | 120g |
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