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Description
Pentax HD Pentax DA 20-40mm f/2.8-4 ED Limited DC WR Lens (Black)Pentax K Mount 30. 5 61. 5mm (35mm Equivalent) Aperture Range: f 2. 8 32 ED and Super Low Dispersion Elements High Grade Multi Layer HD Coating Weather Resistant Seals and SP Coating Smooth & Quiet DC Auto Focus Motor Quick Shift Focus System Rounded Nine Blade Diaphragm First Limited Series Zoom Lens The black HD Pentax DA 20 40mm f 2. 8 4 ED Limited DC WR Lens from Pentax is a high performance standard length zoom lens for K mount APS C cameras. Its
- Pentax K Mount
- 30.5-61.5mm (35mm Equivalent)
- Aperture Range: f/2.8-32
- ED and Super-Low Dispersion Elements
- High-Grade Multi-Layer HD Coating
- Weather-Resistant Seals and SP Coating
- Smooth & Quiet DC Auto Focus Motor
- Quick-Shift Focus System
- Rounded Nine-Blade Diaphragm
- First Limited Series Zoom Lens
The black HD Pentax DA 20-40mm f/2.8-4 ED Limited DC WR Lens from Pentax is a high performance standard length zoom lens for K-mount APS-C cameras. Its 35mm focal length equivalency is 30.5-61.5mm providing a versatile and practical range for wide-angle to standard length shooting. It is the first zoom lens in the Pentax Limited Series line and brings with it a durable, weather-sealed body, HD lens coating and an optical design consisting of one ED element and one super-low dispersion element.
The f/2.8-4 maximum aperture enables effective low light shooting and, at the wide-angle end, control over its shallow depth of field for images that place sharp focus on the subject with a pleasing out of focus background. An in-lens direct current (DC) focus motor provides smooth and quiet autofocus action and its Quick-Shift Focus System enables rapid shift from autofocus to manual focus mode.
The lens barrel and the included hood are made from high-grade aluminum alloy, distance and depth of field scales are clearly marked on the barrel and a smooth rotating, knurled ring provides manual focus control. SP (Super Protect) coating on the front and rear lens elements repels dust, water and grease to help maintain peak performance.
- 30.5 to 61.5mm Focal Length Equivalency and f/2.8 Maximum Aperture
- With its 2x zoom coverage of 20-40mm, this lens offers focal length coverage from 30.5 to 61.5mm in the 35mm format when mounted on a PENTAX K-series DSLR. This covers a practical set of frequently used focal lengths and is ideal as a versatile everyday lens. Its maximum aperture of f/2.8 at the wide-angle end of the zoom is effective in low light and provides shallow depth of field focus.
- HD Lens Coating
- This lens has been treated with the PENTAX-developed HD coating, a high grade, multi-layer coating that reduces unwanted reflection, allowing the user to capture high-contrast images free of flare and ghosting.
- DC Autofocus Motor
- Shoot discreetly with in-lens, direct current (DC) Auto Focus motor operation for smooth & quiet performance.
- Quick-Shift Focus System
- The Quick-Shift Focus System allows instant switching from autofocus to manual focus operation.
- Weather-Resistant Construction and Durable Aluminum Barrel
- With seven special seals to prevent intrusion of water, moisture and dust, this is the first lens of the "Limited" series to feature the PENTAX-original weather-resistant construction. With a handsome and durable aluminum alloy barrel and weather-sealing, this lens is able to perform in almost any shooting condition.
- SP Lens Coating
- The PENTAX SP (Super Protect) coating on the front and rear lens elements repels dust, water and grease to keep your lens clean and your images sharp.
- Optical Design
- The ED (Extra-low Dispersion) glass and a super-low dispersion glass element in this lens' optics deliver clear, high resolution imagery with edge-to-edge sharpness, throughout the entire zoom range.
- Rounded Diaphragm Blades
- Enhanced with a rounded nine-blade diaphragm at the wide apertures for optimal optical performance and gorgeous bokeh effects.
UPC: 027075274747
| Performance | |
|---|---|
| Focal Length | 20 - 40mm Comparable 35mm Focal Length: 30.5 - 61.5 mm |
| Aperture | Maximum: f/2.8 - 4 Minimum: f/22 - 32 |
| Camera Mount Type | Pentax K |
| Format Compatibility | Pentax Digital (APS-C) |
| Angle of View | 70° - 39° |
| Tilt/Shift | None |
| Minimum Focus Distance | 11.02" (28 cm) |
| Magnification | 0.20x |
| Elements/Groups | 9/8 |
| Diaphragm Blades | 9 |
| Features | |
|---|---|
| Image Stabilization | No |
| Autofocus | Yes |
| Tripod Collar | No |
| Physical | |
|---|---|
| Filter Thread | Front:55 mm |
| Dimensions (DxL) | Approx. 2.80 x 2.72" (71 x 69 mm) |
| Weight | 9.98 oz (283 g) |
| Packaging Info | |
|---|---|
| Package Weight | 1.15 lb |
| Box Dimensions (LxWxH) | 6.1 x 3.8 x 3.7" |
In the Box
Pentax HD Pentax DA 20-40mm f/2.8-4 ED Limited DC WR Lens (Black)
- Front Lens Cap
- Rear Lens Cap
- MH-RA55 Lens Hood
- Lens Pouch
- Limited 1-year Warranty
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
Great edger
This is a great lightweight and portable edger. It’s much easier to use than a gasoline powered model. The only limiting factor is the length of the electric cord. It does a great job and make sure your driveways and sidewalk look manicured.
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Reviewed in the United States on January 6, 2026
★★★★★ 5
Awesome edger
This is our second purchase of this product. We had the first one for over ten years and we ended up breaking it(our fault). Immediately bought same one. This is a reliable machine. It goes right through thick weeds and rock hard dirt to edge a lawn or trench. Like I said our previous one lasted ten years and worked just as well in year ten never replaced the blade once. This one came with a back up blade as well which is a bonus. Highly recommend this. Easy to assemble. Takes five minutes. Durable. Powerful. There is hieght adjustment as well. Well worth the price!
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Reviewed in the United States on July 12, 2024
★★★★★ 5
edger
given as gift but I liked the weight and ease of handling. Seemed well made and simple to use. I was pleased with size and features.
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Reviewed in the United States on January 1, 2026
★★★★★ 3
Nice Edger as long as the blade doesn't come loose -- and it will come loose, repeatedly!
Probably could've/should've rated this 2 stars yet it works well when it works. I purchased this edger to edge my drive and sidewalks and not for trenching. The edger arrived very quickly after I ordered it (I am not a Prime member so this was a nice surprise). Assembly was easy and straight-forward. The first use went smoothly and the edger performed flawlessly and provided clean, smooth edging. About 20 minutes into the second use I noticed that the edger was cutting and quickly determined that the blade was spinning freely -- fortunately the hex nut was still attached to the threaded shaft. I reviewed the manual that came with the edger, grabbed the correct sized socket and torque wrench. I removed the hex nut, the first washer, the blade and then the second washer. To install I followed the directions ensuring that the flats of the washer aligned with the flat on the shaft and tightened the hex nut to the specified 140 in-lbs. The edger worked well for about 10 minutes and the blade once again became loose. This time I replaced the original blade (which did not need to be replaced from a wear perspective) with a new B&D blade and new washers. Once again I followed the instructions and this time the edger performed flawlessly until about 5 minutes remaining in my edging when once again the blade came loose. my experience has most certainly been frustrating to say the least. one should not need to carry a socket and torque wrench with them and repeatedly need to tighten the blade. So, when the edger performs as intended it does an excellent job at edging; however I have no confidence that this edger will be able to perform as intended throughout repeated uses and more importantly has shown that it cannot complete my edging without requiring tightening the blade (which requires disassembly down to the second keyed washer). Potential buyers should be prepared for this experience and make your decision accordingly. Note: I tried contacting black and decker via twitter (@blackdeckerhome) and never received a response; I could not find a separate customer service/support twitter account. Trying to contact customer service via the phone these days is an exercise in patience to say the least.
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Reviewed in the United States on November 11, 2022
★★★★★ 5
Trimmer results
Was alittle hesitant with this being B&D
But I was surprised how great it really is.
By far way above my expectations. Works like a charm and does a great job. Chose electric because I really don't have other than a driveway to do. But it really did good around the flower beds.
Cord limits you alittle but nothing to cry about. Quiet also but still use ear plugs.
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Reviewed in the United States on May 9, 2026