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Pentax 645 FA 45-85mm F/4.5 Lens

Zoom LensZoom LensRectilinear are normal lenses that show straight lines as straight lines.Rectilinear are normal lenses that show straight lines as straight lines.Thread size in milimeters for screw-on filters.Thread size in milimeters for screw-on filters.77Autofocus LensAutofocus Lens

Lens Description

The Pentax 645 FA 45-85mm F/4.5 is a wide to normal zoom designed for cameras with a 645 (0.5X) sensor. This constant-aperture zoom covers a 45mm to 85mm focal-range. It provides the same field of view as a 22.5-42.5mm lens on a Full-Frame camera.

This zoom can focus down to 50cm from the imaging plane which gives it a maximum magnification of 0.22X. The lens can focus automtically with the Focus-Drive selected by the camera. While this lens is capable of AF, it does not have a built-in focus motor. It can only focus with a compatible camera body which features a mechanical AF-coupling.

This lens is only available for Pentax 645. Follow this link for all current compatible digital cameras: Pentax 645 mount cameras with 645 (0.5X) or smaller sensors.

Pentax 645 FA 45-85mm F/4.5

Pentax 645 FA 45-85mm F/4.5 Specifications

Brand Pentax Model 645 FA 45-85mm F/4.5
Mount Pentax 645 AF2 Max FLM 0.5X
Focal Range 45 - 85mm View Angle 76 - 44°
Max ApertureF/4.5Min ApertureF/32
Min Focus50cmMagnification0.22X
Filter Size77mm Aperture Blades8
Size (D x L)85 x 100mm Weight870g
TiltN / A ShiftN / A
Stabilization ProtectionNone
Zoom Drive Mechanic Focus Drive Autofocus
Zoom Mechanism External Focus Mechanism External
Hood Bayonet Focus Motor External
Perspective RectilinearIntroduced2010-03-10

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Pentax 45-85mm F/4.5 Facts


Zoom LensZoom LensRectilinear are normal lenses that show straight lines as straight lines.Rectilinear are normal lenses that show straight lines as straight lines.Thread size in milimeters for screw-on filters.Thread size in milimeters for screw-on filters.77Autofocus LensAutofocus Lens
45-85mm Focal-Range F/4.5 Constant Aperture
77mm Filter Thread Autofocus
Pentax 645 Mount 0.5 Max Crop-Factor
870g Lens Weight 85 x 100mm (D x L)
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