Pentax 645 FA 33-55mm F/4.5 AL 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.82Autofocus LensAutofocus LensDiscontinued: No longer produced by the manufacturer. May still be in stock or found used.Discontinued: No longer produced by the manufacturer. May still be in stock or found used.

Lens Description

The Pentax 645 FA 33-55mm F/4.5 AL is a wide to normal zoom designed for cameras with a 645 (0.5X) sensor. This constant-aperture zoom covers a 33 to 55mm focal-range. It provides the same field of view as a 16.5-27.5mm lens on a Full-Frame camera.

This 2X zoom lens focuses down to 40cm from the imaging plane, capturing subject with a maximum 0.21X magnification. 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.

The lens weighs 585g.

This lens is only available for the Pentax 645 mount. It directly attaches and is fully compatible with all Pentax 645 mount cameras with 645 (0.5X) or smaller sensors.

Pentax 645 FA 33-55mm F/4.5 AL
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Pentax 645 FA 33-55mm F/4.5 AL

Focal-Range

33mm600mm
33-55mm
FOCAL-RANGE OF Pentax 645 MOUNT LENSES WITH AT LEAST 645 (0.5X) COVERAGE

Angle-Of-View

5.2°90°
53-80°
ANGLE OF VIEW OF Pentax 645 MOUNT RECTILINEAR LENSES WITH 645 (0.5X)+ COVERAGE

Maximum Aperture

2.85.6
4.5
MAXIMUM APERTURE OF Pentax 645 MOUNT LENSES WITH AT LEAST 645 (0.5X) COVERAGE

Viewing Angle Range

Pentax 33-55mm F/4.5

Maximum Aperture

Compared to other Pentax 645 645 (0.5X) lenses.
53-80°
Max F/4.5

Magnification

0.11X1X
0.21X
MAGNIFICATION OF Pentax 645 MOUNT LENSES WITH AT LEAST 645 (0.5X) COVERAGE

Weight

215g4800g
585g
WEIGHT OF Pentax 645 MOUNT LENSES WITH AT LEAST 645 (0.5X) COVERAGE

Pentax 645 FA 33-55mm F/4.5 AL Specifications

Brand Pentax Model 645 FA 33-55mm F/4.5 AL
Mount Pentax 645 Max FLM 0.5X
Focal Range 33 - 55mm View Angle 80 - 53°
Max ApertureF/4.5Min ApertureF/32
Min Focus40cmMagnification0.21X
Filter Size82mm Aperture Blades8
Size (D x L)88 x 104mm Weight585g
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 33-55mm F/4.5 Facts

Pentax 645 FA 33-55mm F/4.5 AL
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.82Autofocus LensAutofocus LensDiscontinued: No longer produced by the manufacturer. May still be in stock or found used.Discontinued: No longer produced by the manufacturer. May still be in stock or found used.
33-55mm Focal-Range F/4.5 Constant Aperture
82mm Filter Thread Autofocus
Pentax 645 Mount 645 (0.5X) Coverage
585g Lens Weight 88 x 104mm (D x L)
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