NiSi
250mm ƒ/5.6 Reflex
NiSi 250mm f/5.6 Reflex Lens
NiSi 250mm ƒ/5.6 Reflex is a 250mm prime lens for the Fujifilm X mount, equivalent to 375mm on full frame, with a maximum aperture of ƒ/5.6 and manual focus.

Optics
- Type
- Prime · Photo
- Specialty
- Mirror
- Focal length
- 250mm (375mm eq.)
- Angle of view
- ≈ 6°
- Aperture
- ƒ/5.6
- Blades
- —
- Aperture ring
- —
- Construction
- 6 el. / 3 gr.
- Special elements
- Catadioptric; 48-layer dielectric high-reflection coating
- Designed for
- Full frame
Focus
- Type
- Manual
- Minimum distance
- 2 m
- Magnification
- 0.14× (1:7.1)
Size and mount
- Diameter × length
- —
- Weight
- —
- Filter
- 62 mm front
- Mount
- Native X mount
Features
- Yes
- —
- No
- —
History
- Maker
- NiSi · CN
- Announced
- —
- Status
- Current
Fixed f/5.6 mirror lens modelled on the Minolta 250mm f/5.6. Integrated rotating lens hood; 270° focus throw. Official angle of view 9.7° is for full frame. Weight and dimensions not found in official sources.