Pentax 40mm F2.8 XS Lens is a Fixed aperture Auto Focus (AF)
Standard Prime lens with APS-C / DX max sensor coverage, and it is designed to be used with
KAF Mount cameras.
What type of photography is the Pentax 40mm F2.8 XS Lens lens good for?
The choice of photography type for which you intend to use the Pentax 40mm F2.8 XS Lens is a crucial decision factor. Below, we have assessed its suitability for various photography scenarios:
There are 2 more lenses that have the same focal range and aperture values with the Pentax 40mm F2.8 XS Lens that are compatible with the Pentax KAF mount, you can find the review and comparison links of these lenses below.
Lenses in Pentax KAF Mount with Same Focal and Aperture Range
Reasons to Buy the Pentax smc DA 40mm F2.8 XS Lens Lens
Here we've included a summary of the advantages and disadvantages of the Pentax smc DA 40mm F2.8 XS Lens lens in a list form to assist you in determining whether it offers the features you need.
| Autofocus |
| Light weight at only 45g / 1.6 oz |
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Buy Pentax 40mm F2.8 XS Lens from Amazon or B&H PHOTO
| No Weather Sealing |
| Hood is not supplied |
Lens Mount
Pentax 40mm F2.8 XS Lens 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 Mono, Pentax KF and Pentax K-3 III.
Size, Weight and Filter Thread
The size and weight are crucial factors to consider when searching for your next lens. Pentax 40mm F2.8 XS Lens has a maximum diameter of 63mm and a total length of 9mm. It weighs 45g / 1.6 oz.
Focal Range
Pentax 40mm F2.8 XS Lens has a fixed focal length of 40mm which has a 35mm equivalent focal range of 60mm when used on a APS-C / DX format camera.
Optical Image Stabilization
Pentax 40mm F2.8 XS Lens 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 40mm F2.8 XS Lens has a Max Magnification Ratio of 0.13x with a minimum focusing distance of 0.4m. 0.13x ratio is quite low, making this lens unsuitable even for modest close-up photography.
Below are the 3 Standard Prime type Pentax KAF mount lens alternatives with highest max magnification ratios:
Aperture
The Pentax smc DA 40mm F2.8 XS Lens features a maximum aperture of F2.8 and can be stopped down to a minimum aperture of F22. An aperture of F2.8 provides a solid balance, offering capable low-light performance and giving you plenty of flexibility when shooting indoors or during golden hour. At 40mm, this lens provides a natural perspective, and opening up to F2.8 offers clean background separation for typical everyday shooting. The minimum setting of F22 is excellent for deep depth of field work like macro photography, though you may want to avoid the absolute smallest settings to skip the sharpness loss caused by optical diffraction.
Optical Formula
Pentax 40mm F2.8 XS Lens's optical formula consists of 5 elements in 4 groups .
Lens Hood
Pentax 40mm F2.8 XS Lens doesn't come with a lens hood.
Body Colour
Pentax 40mm F2.8 XS Lens is available in Black color.
Popular Comparisons of Pentax 40mm F2.8 XS Lens
Here are the 8 most popular comparisons of the Pentax 40mm F2.8 XS Lens amongst Camera Decision readers.
Top Alternatives of Pentax 40mm F2.8 XS Lens Lens
In addition, it would be interesting to check which lenses from other mounts are most commonly compared with the Pentax smc DA 40mm F2.8 XS Lens.
Top Alternatives of Pentax 40mm F2.8 XS Lens in Other Lens Mounts
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