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.
The 8.5mm focal length model (KOWA PROMINAR 8.5mm F2.8) achieves a realistic and large-scale imaging expression with a distortion value of only 0.12% even though it offers a diagonal angle of view of 106°.
[Note] Some lenses of the micro four thirds system standard may not be mounted to the camera.
The model with a wide angle of view and a 12mm focal length (KOWA PROMINAR 12mm F1.8) has a bright F1.8 aperture, and its distortion value has also been reduced to 0.59%.
[Note] Some lenses of the micro four thirds system standard may not be mounted to the camera.
The model with a 25mm standard focal length (KOWA PROMINAR 25mm F1.8) suited for use in a variety of shooting environments has a bright F1.8 aperture, and provides a sharp image.
[Note] Some lenses of the micro four thirds system standard may not be mounted to the camera.
Kowa’s XD Lenses (extra-low dispersion glass), when combined with a concave lens possessing special dispersion properties, reduces a very high percentage of chromatic aberration.
A dual Link Iris system makes it possible to choose silent or click aperture adjustment. Aperture settings can be changed in an instant to suit the photographic subject.
The construction of the aperture blades with 9 elements makes it possible that the diaphragm shows a circle at all f-stops, creating a more natural impression.
All internal parts are protected by a solid and rigid aluminium housing.
The body feels reassuringly well made with good balance and weightiness in the hand and when attached to a camera body.
The floating mechanism system is effective in preventing malfunction and increasing the life of the lens. High optical performance was achieved in all photographic subject distances.
| Model | 8.5mm F2.8 | 12mm F1.8 | 25mm 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.
Diamond’s Key Features:
Opal’s Key Features:
All Interlock® lenses from ZEISS offer extraordinary image quality with high contrast for technical and industrial applications. They feature an improved fixture for focus and aperture as well as a full metal housing for robustness. The lenses impress with their high image quality and precise manual focus. They are available with standard F-Mount and standard M42x1 Mount (45,5 mm Flange Focal Distance) for even more stability.
The ZEISS Interlock family consits of eleven focal lengths range from 15 mm to 135 mm. With additional focal lengths and improved fixations they complete the lenses of the ZEISS Classic family.
Features:
• 110° angular field with highest optical
performance
• Precise manual focusing
• Robust full-metal construction
• Continuous aperture setting or click stop
• For industrial cameras up to sensor sizes of
24×36 mm or 41mm line sensors
• Features special screws to fix focus and aperture
settings even in rough situations
All Interlock® lenses from ZEISS offer extraordinary image quality with high contrast for technical and industrial applications. They feature an improved fixture for focus and aperture as well as a full metal housing for robustness. The lenses impress with their high image quality and precise manual focus. They are available with standard F-Mount and standard M42x1 Mount (45,5 mm Flange Focal Distance) for even more stability.
The ZEISS Interlock family consits of eleven focal lengths range from 15 mm to 135 mm. With additional focal lengths and improved fixations they complete the lenses of the ZEISS Classic family.
Features:
• f/2.8 aperture
• Precise manual focusing
• Robust full-metal construction
• Continuous aperture setting or click stop
• For industrial cameras up to sensor sizes of
24×36 mm or 41mm line sensors
• Wide angle lens with highest opticus and aperture
settings even in rough situations
• High contrast over the entire image field
+65 6748 5517
info@jm-vistec.com
10 Kaki Bukit Ave 1, #07-06, Singapore 417942
