Thypoch · Simera
Simera 28mm ƒ/1.4 ASPH.
Simera 28mm f/1.4 ASPH.
Thypoch Simera 28mm ƒ/1.4 ASPH. is a 28mm prime lens for the Fujifilm X mount, equivalent to 42mm on full frame, with a maximum aperture of ƒ/1.4 and manual focus. It weighs 347 g.

Black · 2 finishes
Photo ThypochOptics
- Type
- Prime · Photo
- Focal length
- 28mm (42mm eq.)
- Angle of view
- ≈ 54°
- Aperture
- ƒ/1.4 – ƒ/16
- Blades
- 14
- Aperture ring
- Click / de-click switch
- Construction
- 11 el. / 7 gr.
- Special elements
- 1 aspherical, 1 ED, 3 high-refractive-index elements; floating group
- Designations
- ASPH.
- Designed for
- Full frame
Focus
- Type
- Manual
- Minimum distance
- 0.40 m
- Magnification
- —
Size and mount
- Diameter × length
- — × 70.1 mm
- Weight
- 347 g
- Filter
- 49 mm front
- Mount
- Native X mount
Features
- Yes
- Aperture ring, Clickless aperture
- No
- Electronic contacts
History
- Maker
- Thypoch · CN
- Announced
- 2024-05
- Status
- Current
Full-frame lens originally released in Leica M mount; the native X version followed in 2024. X-version length is 70.1 mm without hood (83.7 mm with hood); weight ≈347 g. Front diameter 54 mm.
+ Sources 04· checked 2026-11-03
- 1Official product page and per-mount specifications (X column for length, weight and flange distance)
- 2Official series page; FAQ states the Simera series has no electronic contacts and a click/declick aperture ring
- 3Official store; Fujifilm X Mount offered in black and silver
- 4News of the X, Z, E and RF versions (May 2024); originally M mount only