Review Lens: Kowa Prominar 12mm F1.8 Micro 4/3

Lens Overview - Kowa Prominar 12mm F1.8

The Kowa PROMINAR MFT 12mm Lens, in black, is a wide angle manual focus lens for the Micro Four Thirds sensor format. Compact, stylish, and featuring advanced optics and Japanese construction drawing on 60+ years of Kowa's optical heritage, the lens is a suitable choice for sophisticated MFT cameras such as the Panasonic GH5. It features a 9-blade circular iris with f/1.8 and T1.9 maximum aperture and T-stop, and is designed with 12 lens elements in 10 groups. It is a fully multi-coated XD lens (extra-low dispersion glass) that can help you achieve reduced chromatic aberration.

Key Features

Dual Link Iris
A Dual Link Iris system allows you to switch between silent and click-stop aperture adjustment.

Circular Aperture
A 9-blade aperture ensures that the diaphragm is circular at all f-stops, providing for a more natural impression.

Floating Mechanism System
The floating mechanism system is effective in preventing malfunction and increasing the life of the lens. Tests have shown high optical performance at all supported subject distances.

Aluminum Alloy Construction
All internal parts are protected by a solid and rigid aluminum housing.
UPC: 879110004822

Kowa Prominar 12mm F1.8 Latest Price



Focal Length12mm
Lens MountMicro Four Thirds
FormatMFT
Maximum T-StopT1.9
Maximum F-Stopf/1.8
Diagonal Angle of ViewMFT: 86.8°
Horizontal Angle of ViewMFT: 74.9°
Minimum Focus Distance from Image Plane7.87" / 0.2 m
Optical Design12 Elements in 10 Groups
Iris Blades9
Front Diameter76 mm
Filter Thread72 mm
Focus ScalesNone
Maximum Magnification Ratio1:10
Tripod Mounting ThreadNone
Length3.56" / 90.5 mm
Weight16.76 oz / 475 g

Photos Example - Kowa Prominar 12mm F1.8

Lens Reviews

F/1.2 Lens

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Nikon 1 NIKKOR 32mm f/1.2 $585 $900 2012Nikon Wide
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Voigtlander 35mm F1.2 Nokton Leica Save 30% 2011Voigtlander Wide - Medium
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Samyang 35mm F1.2 ED AS UMC CS Fujifilm X Save 30% 2016Samyang Wide - Medium
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Canon EF 50mm f/1.2L USM $1023 $1574 2007Canon Medium
SemiProDSLR
21 MP
-2.4
0.4
19.7
Mitakon Speedmaster 85mm f/1.2 Nikon $519 $799 2015Mitakon Medium - Telephoto
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Mitakon 42.5mm f/1.2 Micro 4/3 $233 $359 2014Mitakon Medium
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Samyang 50mm F1.2 AS UMC CS Sony E $357 $549 2015Samyang Medium
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Canon RF 85mm F1.2L USM $1755 $2700 2019Canon Medium - Telephoto
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Canon EF 85mm f/1.2L II USM $1215 $1869 2006Canon Medium - Telephoto
SemiProDSLR
23 MP
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0.3
9.84
Canon RF 50mm f/1.2L USM $1495 $2300 2018Canon Medium
Hybrid
22 MP
-2.2
0.2
2.95
Mitakon Speedmaster 85mm f/1.2 Sony $519 $799 2015Mitakon Medium - Telephoto
MF Lens
Canon RF 85mm F1.2L USM DS Save 30% 2019Canon Medium - Telephoto
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Voigtlander Nokton 40mm F1.2 Aspherical Leica M $585 $900 2017Voigtlander Medium
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Samyang 50mm F1.2 AS UMC CS Canon M $357 $549 2015Samyang Medium
MF Lens

Lens Technical

Kowa Prominar 12mm F1.8Nikon NIKKOR Z 85mm f/1.8 S135mm F1.8 GM
Name Kowa Prominar 12mm F1.8 Micro 4/3Nikon NIKKOR Z 85mm f/1.8 SSony FE 135mm F1.8 GM
Max Aperture At Min Focal f/1.8f/1.8f/1.8
Year 201420192019
Mount Type Micro 4/3Nikon ZSony FE
Lens Type Lens SuperwideLens Medium,lens TelephotoLens Telephoto
Auto Focus NoNoNo
Price $800$1900
Lens Zoom PrimePrimePrime
Lens Range 1285135
Global 49.0239
Effective Mega Pixel 41.4052
Distorsion 0.065
Vignetting -1.08906
Tstop 1.90191
Ac 2.57863
Vignetting Ranking 8037
Tstop Ranking 1750
Ac Ranking 484
Pixel Depth 45.7
Price Sensor 3400
Sensor Raw 45.75
Sensor Format Sensor Fullframe
Type Hybrid
Zoom Factor 111
Weight 1lb1lb1lb
Macro NoNoNo
Launch Date Feb. 2014Jul. 2019Feb. 2019
Brand KowaNikonSony


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