• Brand
  • Products
  • Store
  • Community
  • Support

645-mount Lenses

Wide-Angle Lenses Wide-Angle Lenses Standard Lenses Telephoto Lenses Macro Lenses

HD PENTAX-D FA645 35mmF3.5AL[IF]

  • Single Focus
  • DFA

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-FA645 35mm F3.5AL[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.

Body AF Aperture Ring Aspherical Lens (AL) Inner Focus (IF) HD Coating SP Coating Round Iris Diaphragm

Hood : PH-RBE82 / Case : S120-150 Included
JAN-Code / 4549212 295218

Sample Images

  • Aperture F14, Shutter speed 0.3sec, Focal length 35mm, ISO400   Photo by Kazutoshi Yoshimura

  • Aperture F18, Shutter speed 0.5sec, Focal length 35mm, ISO100   Photo by Kazutoshi Yoshimura

  • Aperture F9.0, Shutter speed 1/15sec, Focal length 35mm, ISO400   Photo by Kazutoshi Yoshimura

Features / Specifications

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.
Other features
  • Image circle covering the entire image size of 645-series film-format SLR cameras
  • SP (Super Protect) Coating applied to the front surface of the lens to effectively repel water and grease
  • Attachment of various filters, such as a C-PL (circular polarizing) filter, to the front end of the lens
  • PL filter window for easy control of a polarizing filter without requiring the removal of the lens hood
【MTF Chart】
Geometric MTF*

DIGITAL (with 645D/Z body)

FILM (with film 645 body)

*Calculated without taking the diffraction phenomenon into account
Wave optics MTF*

DIGITAL (with 645D/Z body)

FILM (with film 645 body)

*Calculated taking the diffraction phenomenon into account
Spatial Frequencies S:Sagittal M:Meridional
10 lines/mm
30 lines/mm
Because light diffraction cannot be avoided in the actual lens, Wave Optics MTF is appropriate to actuality. However, to compare the effects of geometric aberration compensation on MTF only, Geometrical Optical MTF is appropriate.
Type Wide
Focal length (Equivalent to 35mm format) 35 mm (27.5mm)
Maximum aperture F3.5
Minimum aperture F32
Angle of view 76°
Lens construction 10 elements / 7 groups
No. of diaphragm blades 9
Closest focusing distance 0.3 m
Maximum reproduction ratio 0.25x
Filter size 82 mm
Diameter x length Approx. 88 x 90 mm
Weight Approx. 570 g

Related AccessoriesLens-related accessories list

Recommended contents


Page top