With over 60 years of technical experience and know-how in optics, Kowa is proud to present the next generation of crystal clear, super wide angle, fixed focal length lenses. In particular, Kowa’s 8.5mm F2.8 model is able to produce ultra HD resolution by applying high precision aspherical lens elements. This design allows our 8.5mm lens to have minimal distortion even though it projects a super wide angle of view.

FeaturesSpecificationsPicture Sample

MICRO FOUR THIRDS LENSES

Model PROMINAR8.5mm F2.8  PROMINAR12mm F1.8 PROMINAR25mm F1.8
Mount Micro Four Thirds Micro Four Thirds Micro Four Thirds
Focal Length 8.5mm
(35mm Equivalent Focal length: 17mm)
12mm
(35mm Equivalent Focal length: 24mm)
25mm
(35mm Equivalent Focal length: 50mm)
F/T-number F2.8/T3.0 F1.8/T1.9 F1.8/T1.9TV
Distortion
(TV)
0.12% 0.59% -0.57%
Minimum Aperture F16/T17 F16/T17 F16/T17
Lens Construction 17 Elements in 14 Groups 12 Elements in 10 Groups 8 Elements in 6 Groups
Angle of View
(degree)
93.5°(H)×77.1°(V)×106.0°(D) 74.9°(H)×59.6°(V)×86.8°(D) 40.9°(H)×31.1°(V)×50.2°(D)
Iris 9
(Circular Aperture)
9
(Circular Aperture)
9
(Circular Aperture)
Minimum Focusing
Distance
0.2m 0.2m 0.25m
Maximum Image
Magnification
0.08x 0.1x 0.15x
Minimum Field Size 239mm×179mm 182mm×136mm 125mm×93mm
Filter Thread φ86mm
(attach to lens hood)
φ72mm φ55mm
Diameter x Length φ71.5×86.8mm
(excluding the lens hood)
φ76.5×90.5mm
(excluding the lens hood)
φ60×94mm
(excluding the lens hood)
Weight 475g
(excluding the lens hood)
441g
(excluding the lens hood)
400g
(excluding the lens hood)

[Note] Some lenses of the micro four thirds system standard may not be mounted to the camera.