Thypoch Eureka 28mm f/2.8 ASPH Full-Frame Brass Pancake Prime Lens

The Thypoch Eureka 28mm f/2.8 ASPH is an ultra-thin full-frame pancake prime built for photographers who want a classic 28mm wide-angle perspective without carrying a single gram more than they have to. On a Leica M rangefinder it measures just 19.5mm from the mount at infinity and weighs roughly 133 grams; the Fujifilm X version stays nearly as discreet at 26.9mm and about 154 grams. Either way, the lens practically disappears on the front of the camera, turning an everyday body into a genuinely pocketable street and travel kit. The styling is drawn from the low-profile optics of the 1950s, and the lacquered solid brass barrel gives it real substance in the hand: dense, precisely machined, and finished to wear in over years of use, taking on the kind of patina that makes a well-traveled lens unmistakably yours.

Behind that vintage exterior is a thoroughly modern optical design. Seven elements in four groups pair a precision aspherical element with high-refractive-index glass (two HRI elements in the Leica M version, three in the Fujifilm X version) to hold sharpness from center to edge across the full-frame 43.2mm image circle while keeping distortion tightly controlled - important for architecture, urban geometry, and interiors where straight lines have to stay straight. Thypoch's Epoch Coating M (Modern) multi-layer coating suppresses veiling flare and ghosting in backlit and mixed-light scenes, so night streets, shop windows, and low sun stay clean and contrasty instead of washing out.

The 8-blade aperture diaphragm produces distinctive starbursts under point light sources, giving night and city work a subtle artistic signature. A 0.4m (1.3 ft) minimum focusing distance is unusually short for a wide-angle rangefinder lens, letting you move in close for detail shots, food, and environmental portraits instead of backing off to a fixed working distance. With a 75-degree diagonal angle of view on full frame, an f/2.8 to f/16 aperture range, and a compact M27 filter thread, the Eureka 28mm is a complete everyday-carry wide angle - offered in Leica M and Fujifilm X mounts, in Matte Black or Pearl White, and in a Leica M bundle that ships with a silver Leica M to Fujifilm X adapter so one lens can serve two systems.

Features

• Ultra-thin pancake profile - 19.5mm long at infinity and approx. 133g on Leica M; 26.9mm and approx. 154g on Fujifilm X
• Lacquered solid brass barrel that develops a unique patina over time; offered in Matte Black and Pearl White
• 7-element, 4-group optical formula with a precision aspherical element plus high-refractive-index glass (2 HRI on Leica M, 3 HRI on Fujifilm X) for edge-to-edge sharpness and low distortion
• Epoch Coating M (Modern) multi-layer coating for strong flare and ghosting resistance in backlit and night scenes
• 8-blade aperture creates distinctive starbursts under point light sources
• 0.4m (1.3 ft) minimum focusing distance - exceptionally close for a wide-angle rangefinder lens, ideal for details and close-up compositions
• Full-frame 43.2mm image circle with a classic 75-degree diagonal angle of view; the APS-C sensor on Fujifilm X bodies crops into that circle for a tighter, near-normal field of view
• Available in Leica M and Fujifilm X mounts, plus a Leica M configuration bundled with a silver Leica M to Fujifilm X adapter
• Compact M27 (27mm) front filter thread for lightweight UV, ND, and protective filters

Technical Specifications

• Focal Length: 28mm
• Aperture Range: f/2.8 to f/16
• Optical Design: 7 elements in 4 groups - Leica M: 1 aspherical + 2 high-refractive-index elements; Fujifilm X: 1 aspherical + 3 high-refractive-index elements
• Aperture Blades: 8
• Minimum Focusing Distance: 0.4 m / 1.3 ft
• Filter Thread: M27
• Front Diameter: 28.3mm
• Coating: Epoch Coating M (Modern) multi-layer coating
• Image Circle: 43.2mm (full-frame)
• Angle of View: 75 degrees diagonal / 65 degrees horizontal / 46 degrees vertical (full-frame)
• Length (Leica M): 19.5mm at infinity / 21.9mm at 0.4m close focus
• Length (Fujifilm X): 26.9mm at infinity / 29.3mm at 0.4m close focus
• Weight (Leica M): Approx. 133 g
• Weight (Fujifilm X): Approx. 154 g
• Barrel Material: Brass, lacquered
• Available Mounts: Leica M, Fujifilm X
• Finishes: Matte Black, Pearl White

What's Included

• Thypoch Eureka 28mm f/2.8 ASPH Lens
• Front Lens Cap
• Rear Lens Cap
• Silver Leica M to Fujifilm X Mount Adapter (included only with the Leica M + M-X Adapter configurations)