Pentax FA 31mm F1.8 Limited Lens

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.Thread size in milimeters for screw-on filters.Thread size in milimeters for screw-on filters.58Quick-Shift Autofocus, also called Direct Manual-Focus (DMF).Quick-Shift Autofocus, also called Direct Manual-Focus (DMF).Discontinued: 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 FA 31mm F1.8 Limited is a wide prime designed for cameras with a Full-Frame sensor. This ultra-bright prime has a 31mm focal-length.

This prime can focus down to 30cm from the imaging plane which gives it a maximum magnification of 0.16X. The lens offers a Quick-Shift AF system which lets the user simply rotate the focus-ring to focus manually. 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 K. It directly attaches and is fully compatible with all Pentax K mount cameras with Full-Frame or smaller sensors.

Pentax FA 31mm F1.8 Limited
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Pentax FA 31mm F1.8 Limited

Pentax FA 31mm F1.8 Limited Specifications

Brand Pentax Model FA 31mm F1.8 Limited
Mount Pentax K KAF Max FLM 1X
Focal Length 31mm View Angle 70°
Max ApertureF/1.8Min ApertureF/22
Min Focus30cmMagnification0.16X
Filter Size58mm Aperture Blades9
Size (D x L)66 x 68.5mm Weight345g
TiltN / A ShiftN / A
Stabilization ProtectionNone
Zoom Drive N / A Focus Drive AF with Quick-Shift
Zoom Mechanism N / A Focus Mechanism Internal
Hood Fixed Focus Motor External
Perspective RectilinearIntroduced2002-03-03

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Pentax 31mm F/1.8 Facts

Pentax FA 31mm F1.8 Limited
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.Thread size in milimeters for screw-on filters.Thread size in milimeters for screw-on filters.58Quick-Shift Autofocus, also called Direct Manual-Focus (DMF).Quick-Shift Autofocus, also called Direct Manual-Focus (DMF).Discontinued: 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.
31mm Focal-Length F/1.8 Constant Aperture
58mm Filter Thread AF with Quick-Shift
Pentax K Mount Full-Frame Coverage
345g Lens Weight 66 x 68.5mm (D x L)
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