Pentax DFA 645Z 35mm f/3.5 Lens

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An interchangeable wide-angle lens for use with medium-format digital SLR cameras, assuring sharp, high-resolution images
The lens design is based on the smc PENTAX-FA 645 35mm F3.5 AL [IF], renowned for its crisp image description. Thanks to the incorporation of a newly designed high-grade aspherical optical elements, it has been optimized for digital imaging by minimizing various aberrations. It is also treated with the PENTAX-original HD Coating to deliver high-contrast, high-resolution images even under demanding lighting conditions such as backlight, making it ideal for scenic photography.

Features
Optical design supporting super-high-resolution images of medium-format digital SLR cameras
Combining a newly designed, high-grade glass-molded aspherical element with a high refractive index low dispersion glass element and a hybrid aspherical element in its optics, this lens effectively compensates for chromatic and spherical aberrations and assures a sufficient peripheral brightness level, while enhancing image resolution and crisp image description at edges of the image field. The lens coating and reflective material used for the interior of the lens barrel are optimized for the distinctive characteristics of digital imaging. This allows it to draw out the optimum performance of PENTAX medium-format digital SLR cameras, while minimizing flare and ghost images.

Wide-angle perspective perfect for scenic photography
This lens provides a focal length of 27.5mm (in the 35mm format; when mounted on a 645Z or 645D camera body) to capture wide-angle images of landscape and architecture. With a minimum focusing distance of 0.3 meters and a maximum magnification of 0.25 times, it can also be used for close-up photography, allowing the photographer to capture subjects such as flowers from a close distance, while retaining the scenery in the background to emphasize the sense of depth. What's more, its inner-focus mechanism keeps its total length unchanged during focusing, and allows the user to maintain the ideal balance during handheld shooting.

HD Coating for high-resolution images
This lens is treated with the PENTAX-original, high-grade HD Coating.* Compared with conventional multi-layer coatings, this innovative coating assures higher light transmittance and lower reflection to deliver bright, high-contrast images free of flare and ghost images, even under demanding lighting conditions such as backlight.

* HD stands for High Definition.

Rounded diaphragm for a beautiful bokeh effect
This lens features a nine-blade, rounded diaphragm to produce a smooth, beautiful bokeh (defocus) effect, while minimizing the streaking effect of point light sources.

Wide-angle lens
Inner Focus (IF) to keep lens compactness
Round Iris Diaphragm to offer beautiful Bokeh effect
HD Coating to optimize light transmittance and minimize reflection
SP (Super Protection) Coating against water-based or oily substances
Aspherical Lens (AL) to reduce aberrations and provide crystal clear images

Article Number
26450
Technical Specifications
Focal Length
35mm
Equivalent to 35mm format
27.5mm (with 645D/Z body)

21.5mm (with film 645 body)
Maximum aperture
F3.5
Minimum aperture
F32
Number of Diaphragm Blades
9

Rounded aperture (F3.5-7.1)

Diaphragm control: Fully Automatic
Angle of View
76° (with 645D/Z body)

90° (with film 645 body)
Construction
10 elements in 7 groups
Smallest object distance
0.3m
Magnification
0.25x
Filter size
82mm
Mount
645AF
Weight
Approx. 570g (with hood Approx. 610g)
Dimensions (Length x Diameter)
Approx. 88mm x 90mm
Kit Content
Case, Hood, Lens cap, Lens Mount cap
Optional Accessories
Lens Hood PH-RBE82
Lens Cap O-LC82
Lens Case S120-150

 

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