Pentax FA 31mm F1.8 L is a Fixed aperture Auto Focus (AF)
Wideangle Prime lens with 35mm FF max sensor coverage, and it is designed to be used with
KAF Mount cameras.
What type of photography is the Pentax FA 31mm F1.8 L lens good for?
The type of photography that you are planning to use the Pentax FA 31mm F1.8 L is an important decision factor. Here we have evaluated its suitability to various photography scenarios:
Lenses in Pentax KAF Mount with Same Focal and Aperture Range
Reasons to Buy Pentax smc FA 31mm F1.8 AL Limited Lens
Here we've included a summary of the advantages and disadvantages of the Pentax smc FA 31mm F1.8 AL Limited lens in a list form to help you determine whether it offers the features you need.
| Autofocus |
| Aperture Ring |
| DoF(Depth of Field) Scale |
| Hood supplied |
| Fast Aperture |
| Covers Full-Frame Sensor |
| 9 Diaphragm Blades |
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Lens Mount
Pentax FA 31mm F1.8 L is compatible with cameras that have a Pentax KAF lens mount. Some of the latest released cameras that are compatible with the Pentax KAF lenses are Pentax K-3 III Monochrome, Pentax KF and Pentax K-3 III.
Size, Weight and Filter Thread
Size and weight is a very important decision factor when searching for your next lens. Pentax FA 31mm F1.8 L has a maximum diameter of 65mm and total length of 69mm. It weighs 345g / 12.2 oz.
Pentax FA 31mm F1.8 L has a filter thread of 58mm. Below are links to the filters that we recommend you to consider for your Pentax FA 31mm F1.8 L:
Focal Range
Pentax FA 31mm F1.8 L has a fixed focal length of 31mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides an 35mm (FF) equivalent of 46.5mm.
Optical Image Stabilization
Pentax FA 31mm F1.8 L doesn't have an optical image stabilization system so the only option to stabilize the image taken with this lens is to mount on a camera body with IBIS (sensor based In-body image stabilization).
Maximum Magnification Ratio
Pentax FA 31mm F1.8 L has a Max Magnification Ratio of 0.16x and has a minimum focusing distance of 0.3m. 0.16x means that the max magnification ratio is very low and not suitable even for modest close-up shots.
Below are the 3 Wideangle Prime type Pentax KAF mount lens alternatives with highest max magnification ratios:
Aperture
Pentax FA 31mm F1.8 L has a max aperture of F1.8 and a minimum aperture of F22.0.
Optical Formula
Pentax FA 31mm F1.8 L's optical formula consists of 9 elements in 7 groups .
Lens Hood
Pentax FA 31mm F1.8 L comes with a built-in petal shaped lens hood which is handy to reduce lens flare and glare in your photos.
Body Colour
Pentax FA 31mm F1.8 L is available in Black and Silver color.
Popular Comparisons of Pentax FA 31mm F1.8 L
Here are the eight most popular comparisons of the Pentax FA 31mm F1.8 L amongst Camera Decision readers.
Top Alternatives of Pentax FA 31mm F1.8 L Lens
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