Pentax 645 DA 25mm F/4 AL IF SDM AW Lens

Weatherproof - Seals protect from dust, humidity and light splashing.Weatherproof - Seals protect from dust, humidity and light splashing.Fixed focal-length. No zoom.Fixed focal-length. No zoom.Rectilinear are normal lenses that show straight lines as straight lines.Rectilinear are normal lenses that show straight lines as straight lines.No thread to mount front filters.No thread to mount front filters.Quick-Shift Autofocus, also called Direct Manual-Focus (DMF).Quick-Shift Autofocus, also called Direct Manual-Focus (DMF).

Lens Description

The Pentax 645 DA 25mm F/4 AL IF SDM AW is an ultra-wide prime designed for cameras with a 645D (0.8X) sensor. 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 can focus 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.

This lens is only available for Pentax 645. Follow this link for all current compatible digital cameras: Pentax 645 mount cameras with 645D (0.8X) sensors.

Pentax 645 DA 25mm F/4 AL IF SDM AW

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 ApertureF/4Min ApertureF/32
Min Focus40cmMagnification0.11X
Filter Size Aperture Blades9
Size (D x L)90 x 149mm Weight1040g
TiltN / A ShiftN / A
Stabilization ProtectionWeatherproof
Zoom Drive Mechanic Focus Drive AF with Quick-Shift
Zoom Mechanism N / A Focus Mechanism Internal
Hood Fixed Focus Motor Super Sonic
Perspective RectilinearIntroduced2012-03-22
Features

Internal rotating circular polarizing insert. 40.5mm inner filter-tray.

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Pentax 25mm F/4 Facts


Weatherproof - Seals protect from dust, humidity and light splashing.Weatherproof - Seals protect from dust, humidity and light splashing.Fixed focal-length. No zoom.Fixed focal-length. No zoom.Rectilinear are normal lenses that show straight lines as straight lines.Rectilinear are normal lenses that show straight lines as straight lines.No thread to mount front filters.No thread to mount front filters.Quick-Shift Autofocus, also called Direct Manual-Focus (DMF).Quick-Shift Autofocus, also called Direct Manual-Focus (DMF).
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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