The D FA 645 55mm F2.8 lens is a fast, standard lens designed specifically for use with the PENTAX 645D. It features an advanced optical design tailored for digital photography, quiet SDM autofocus, and it's fully weather sealed for field use.
Smooth, Quiet SDM Autofocus
SP Coating Blocks Dust and Dirt
Weather-Resistant and Dustproof
Aero Bright Coating to Prevent Flare
New camera, new lens: this Pentax-D FA 645 55mm f/2.8 AL[IF] SDM AWLens is the first model of the Pentax-D FA 645 lens series created for the Pentax 645D digital medium-format camera. With a focal length that's equivalent to a 43.5mm standard lens (in 35mm), it features optics optimized for digital photography to assure exceptional performance, and also provides an image circle covering the image area of existing 645-format film SLR cameras. It has dependable, dust-proof, weather-resistant construction for active outdoor photography.
This lens features a Supersonic Direct-drive Motor (SDM) autofocus drive and Quick-Shift for instant autofocus/manual focus switching, Aero Bright coating to help prevent flare and ghost images, and it's Pentax's first 645 system lens to incorporate a rounded diaphragm for improved bokeh (the aesthetic quality of the blur in the out-of-focus areas of an image).
Additional Information
Brands
Pentax
What's in the box
Pentax-D FA 645 55mm f/2.8 AL[IF] SDM AW Lens
Front and Rear Lens Caps
Lens Hood
Max Format Size (mm)
645
(F) Maximum Aperture
2.8
(F) Minimum Aperture
22
Aperture Ring
No
Number of Diaphragm Blades
9
Elements
9
Groups
7
Minimum Focus (m)
0.5
Maximum Magnification (x)
0.17
Autofocus
Yes
Motor Type
Ultrasonic
Full time Manual
Yes
Focus Method
Internal
Distance Scale
Yes
DoF Scale
Yes
Diameter (mm)
68.2
Length (mm)
81.3
Materials
No
Sealing
Yes
Colour
Black
Zoom Method
No
Power zoom
No
zoom_lock
No
Filter Thread (mm)
67
Hood Supplied
Yes
Hood Product Code
PH-RBN 67mm
Tripod Collar
No
Tripod Supplied
No
Optional Accessories
No
Notes
No
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