Pentax 645 DA 25mm F/4 AL IF SDM AW Lens
The Pentax 645 DA 25mm F/4 AL IF SDM AW is an ultra-wide prime designed for cameras with 645D (0.8X) sensors. This prime has a 25mm focal-length. It provides the same field of view as a 20mm lens on a Full-Frame camera. The body of this lens is weatherproof against adverse weather such as rain and snow. It has sealing to prevent entry of water and dust.
This prime is capable of focusing down to 40cm from the imaging plane which gives it a maximum magnification of 0.11X. The lens offers a Quick-Shift AF system which lets the user simply rotate the focus-ring to focus manually. A Super-Sonic motor inside the lens delivers very fast and relatively quiet AF.
Pentax 645 DA 25mm F/4 AL IF SDM AW Specifications
|Brand||Pentax||Model||645 DA 25mm F/4 AL IF SDM AW|
|Mount||Pentax 645||Max FLM||0.8X|
|Focal Length||25mm||View Angle||95°|
|Max Aperture||F/4||Min Aperture||F/32|
|Filter Size||Aperture Blades||9|
|Size (D x L)||90 x 149mm||Weight||1040g|
|Tilt||N / A||Shift||N / A|
|Zoom Drive||Mechanic||Focus Drive||AF with Quick-Shift|
|Zoom Mechanism||N / A||Focus Mechanism||Internal|
|Hood||Fixed||Focus Motor||Super Sonic|
Internal rotating circular polarizing insert. 40.5mm inner filter-tray.
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Pentax 25mm F/4 Facts
|25mm Focal-Length||F/4 Constant Aperture|
|No filter thread||AF with Quick-Shift|
|Pentax 645 Mount||0.8 Max Crop-Factor|
|1040g Lens Weight||90 x 149mm (D x L)|
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