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The 28mm f4.5 D is a full-frame, ultrawide lens that utilizes the latest aspheric lens technology to produce high resolution and large image circle coverage for film and digital backs. Since wide angle lenses can cause color shift problems with digital backs (due to the extreme angle at which light rays hit the sensor), the Mamiya 28mm f/4.5 D has been designed to direct light rays so that they are parallel when they hit the sensor – producing maximum sharpness, color accuracy and contrast.
Unlike conventionally designed digital lenses, the 28mm f/4.5 Sekor D Aspherical was designed with the requirement that it works with digital and film systems. It is the world’s first 28mm medium format lens with this capability. The Mamiya Sekor AF 28mm f/4.5 D is ideal for a wide range of applications, including commercial, architectural and outdoor photography.
|Compatible Cameras||645AF (requires upgrade to 645AFD)
ZD camera (requires firmware upgrade)
|Optical Construction||14 elements/10 groups|
|Angle of View||102°/94° with ZD Back|
|Aperture Range||f/4.5 ~ 32|
|Minimum Focusing Range||1.15 ft. (0.35m)|
|Maximum Magnification Ratio||0.15x|
|Area Covered||372 x 276mm|
|Equivalent 35mm Focal Length||17mm/20mm with ZD Back|
|Filter||Sheet filter on the rear mount|
|Dimensions (L x W)||5.35 x 3.54" (136 x 90mm)|
|Weight||1.9 lbs. (886g)|
Questions & Answers
Mamiya AF 28mm f/4.5 D Aspherical 645AFD Wide Angle Lens
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