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Pentax HD DA 20-40mm F/2.8-4 ED DC WR Limited Lens
Weatherproof - Seals protect from dust, humidity and light splashing.
Zoom Lens
Rectilinear are normal lenses that show straight lines as straight lines.
Thread size in milimeters for screw-on filters.55
Quick-Shift Autofocus, also called Direct Manual-Focus (DMF).Lens Description
The Pentax HD DA 20-40mm F/2.8-4 ED DC WR Limited is a wide to normal zoom designed for cameras with a APS-C (1.5X) sensor. This bright variable-aperture zoom covers a 20 to 40mm focal-range. It provides the same field of view as a 30-60mm lens on a Full-Frame camera.
This 2X zoom lens focuses down to 28cm from the imaging plane, capturing subject with a maximum 0.2X magnification. The lens offers a Quick-Shift AF system which lets the user simply rotate the focus-ring to focus manually. A built-in focus motor is used to set the focus-distance. It allowed Pentax to optimize the motor precisely for this lens in order to maximize performance.
The lens weighs 283g. Its body is weatherproof against adverse weather such as rain and snow. Seals in key areas prevent entry of water and dust.
This lens is only available for the Pentax K mount. It directly attaches and is fully compatible with all Pentax K mount cameras with APS-C (1.5X) sensors.
Focal-Range
Angle-Of-View
Maximum Aperture
Viewing Angle Range
Maximum Aperture
Magnification
Weight
Pentax HD DA 20-40mm F/2.8-4 ED DC WR Limited Specifications
| Brand | Pentax | Model | HD DA 20-40mm F/2.8-4 ED DC WR Limited |
|---|---|---|---|
| Mount | Pentax K | Max FLM | 1.5X |
| Focal Range | 20 - 40mm | View Angle | 70 - 39° |
| Max Aperture | F/2.8 - 4 | Min Aperture | F/22 - 32 |
| Min Focus | 28cm | Magnification | 0.2X |
| Filter Size | 55mm | Aperture Blades | 9 |
| Size (D x L) | 71 x 69mm | Weight | 283g |
| Tilt | N / A | Shift | N / A |
| Stabilization | Protection | Weatherproof | |
| Zoom Drive | Mechanic | Focus Drive | AF with Quick-Shift |
| Zoom Mechanism | External | Focus Mechanism | Internal |
| Hood | Bayonet | Focus Motor | Internal |
| Perspective | Rectilinear | Introduced | 2013-11-06 |
Similar Lenses For Pentax K Mount
Here are the newest lenses matching or exceeding major specifications of the Pentax HD DA 20-40mm F/2.8-4 ED DC WR Limited. They cover the same focal-range with a similar aperture and are available for the same lens mount and imaging circle coverage.
Pentax HD DA* 16-50mm F/2.8 PLM AW
Pentax HD D FA 15-30mm F/2.8 ED SDM WR
Pentax HD D FA 24-70mm F/2.8 SDM WR
Pentax HD DA 16-85mm F/3.5-5.6 ED DC WR
![Pentax DA 18-135mm F3.5-5.6 AL [IF] DC WR](/image_tool.php?op=resize&src=img/lens/w200/pentax_da18135f3556wr.jpg&width=200&height=140)
Pentax DA 18-135mm F3.5-5.6 AL [IF] DC WR
Pentax DA 18-55mm F3.5-5.6 AL WR
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Pentax 20-40mm F/2.8-4 Facts
Weatherproof - Seals protect from dust, humidity and light splashing.Zoom LensRectilinear are normal lenses that show straight lines as straight lines.Thread size in milimeters for screw-on filters.55Quick-Shift Autofocus, also called Direct Manual-Focus (DMF).| 20-40mm Focal-Range | F/2.8-4 Max Aperture |
| 55mm Filter Thread | AF with Quick-Shift |
| Pentax K Mount | APS-C (1.5X) Coverage |
| 283g Lens Weight | 71 x 69mm (D x L) |
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