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Pentax HD DA 20-40mm F2.8 - 4 Limited DC WR Wide Zoom Lens for Q Mount - Black

4.5 4.5 out of 5 stars 575 ratings

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HD DA 20-40mm F2.8-4

Purchase options and add-ons

Brand Pentax
Focal Length Description 40 mm
Lens Type Interchangeable
Compatible Mountings Other
Camera Lens Description 40 month

About this item

  • Dependable weather-resistant construction
  • High Definition Coating against flare and ghost images
  • Aluminium Alloy
  • Lens-installed AF driving motor for smooth and quiet AF operation
  • 2-times zoom lens equivalent to 30.5-61.5mm in 35mm film format
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Pentax HD DA 20-40mm F2.8 - 4 Limited DC WR Wide Zoom Lens for Q Mount - Black
Pentax HD DA 20-40mm F2.8 - 4 Limited DC WR Wide Zoom Lens for Q Mount - Black
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Pentax K-Mount HD DA 15mm f/4 ED AL 15-15mm Fixed Lens for Pentax KAF Cameras (Limited Black)
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Price$496.95$1,296.95$415.00$476.95$496.95
Delivery
Get it as soon as Tuesday, Mar 26
Get it as soon as Tuesday, Mar 26
Customer Ratings
Picture quality
4.7
5.0
4.6
Quality of material
4.7
5.0
4.9
Sold By
Adorama
Adorama
AAAA Universe
Amazon.com
Amazon.com
lens type
Interchangeable
Wide Angle
Standard
Telephoto
Wide Angle
compatible mountings
Other
Pentax K
Pentax KAF3
Pentax KAF
lens design
Zoom
Prime
Zoom
Zoom
Prime
focus type
Auto Focus
Auto Focus
automatic only
Auto Focus
Screw drive from camera
minimum focal length
20 millimeters
18 millimeters
15 millimeters
max focal length
40 millimeters
135 millimeters
15 millimeters
fixed focal length
40 millimeters
21 millimeters
40 millimeters
135 millimeters
15 millimeters
real angle of view
70 degrees
92 degrees
70 degrees
76 degrees
86 arc minute
model name
hd
23010
21977
21800

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    Pentax HD DA 20-40mm F2.8 - 4 Limited DC WR Wide Zoom Lens for Q Mount - Black


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    Product Description

    Product Description

    The first Limited Series zoom lens with focal length coverage from 30.5 to 61.5mm in the 35mm format, providing the most frequently used focal lengths for a variety of subjects settings and creative perspectives.

    From the Manufacturer

    The first Limited Series zoom lens with focal length coverage from 30.5 to 61.5mm in the 35mm format, providing the most frequently used focal lengths for a variety of subjects settings and creative perspectives.

    Customer reviews

    4.5 out of 5 stars
    4.5 out of 5
    575 global ratings

    Customers say

    Customers like the quality, image quality, and performance of the lens. For example, they mention it's well built, takes great pictures, and has a fast AF. Most appreciate the weight and size of the product. Opinions are mixed on the focus adjustment.

    AI-generated from the text of customer reviews

    54 customers mention47 positive7 negative

    Customers like the quality of the lens. They mention it's a pretty good lens, well built, and of the high quality expected of Pentax. They are also pleased with the performance, saying it'll be a solid one-lens rig for an awfully broad range of shots.

    "...The new focusing system is lightning fast, and solid...." Read more

    "...The filter size is 72 vs 67 on the Tamron. The lens is well build but not heavy despite the size. The lens hood is well design...." Read more

    "...This new lens is fantastic and right off the bat I noticed the difference especially on macro shooting. The auto focus is silent and fast...." Read more

    "...very close with lens set at 85mm the image was very sharp and high quality but the area covered was about what you would expect with a 50mm lens not..." Read more

    51 customers mention51 positive0 negative

    Customers are satisfied with the image quality of the lens. They mention that it takes tack sharp pictures throughout the focal range, and the image is fantastic at all settings. The lens works perfectly with their Pentax KF camera and produces clear, bright contrasts scenes. The color and detail are amazing, and every shot is razor sharp. The build quality is top notch, and it looks great on their Pentac KP camera.

    "...It's not 1-1 but for flowers, and closeups, the color and detail are amazing.The speed of focus is world's better than the previous 55-300 ED...." Read more

    "...Botom line, it takes very sharp images, focuses quickly and quietly and is very light." Read more

    "This lens is sharp, clear, and a very useful range to go well with my 18/135mm lens I had with this camera...." Read more

    "...The lens is well build but not heavy despite the size. The lens hood is well design.I took one star off because it is not perfect...." Read more

    36 customers mention36 positive0 negative

    Customers are satisfied with the performance of the lens. They mention that the autofocus is fast and quiet, and it works well even in challenging lighting conditions. Some say that the lens works well so far.

    "...What I found was this lens does remarkably well for all around work as well as having the ability to do spectacular macro photography...." Read more

    "...AF is very fast and silent; it seems to be faster than 18-135. It does require a -4 focus adjustment on a K-S2 while none for the 18-135...." Read more

    "...shot is razor sharp (except a few due to operator error), autofocus is super fast and rarely hunts, color rendition is gorgeous, and bokeh is great...." Read more

    "...Image quality is good throughout the zoom range. The PLM focus is unbelievably quick, silent, and does not have the hunting issues that Pentax often..." Read more

    22 customers mention18 positive4 negative

    Customers like the weight of the lens. They say it's well built, but not heavy despite the size. They also find the size and weight balance well. The lens is easy to carry and folds up into a compact package when not in use. Customers also mention that the plastic construction keeps the weight down.

    "...line, it takes very sharp images, focuses quickly and quietly and is very light." Read more

    "...At least the plastic construction kept the weight down and it's easier to hold steady at full power ... I like it a lot .." Read more

    "...The lens is well build but not heavy despite the size. The lens hood is well design.I took one star off because it is not perfect...." Read more

    "I bought this to use on a K-S2, and loved it. Insanely fast focus, relatively light and portable lens...." Read more

    16 customers mention12 positive4 negative

    Customers like the value of the camera lenses. They mention that it's worth the price and well worth the wait.

    "This lens is a phenomenal value - light, PLM autofocus is very quiet and very fast (in good light), the lens is decently fast, and the pictures are..." Read more

    "...This lens is worth the $$." Read more

    "...I took one star off because it is not perfect. It is substantially more expensive than either the 18-135 or the Tamron 17-50...." Read more

    "This is a really great lens at this price point...." Read more

    12 customers mention12 positive0 negative

    Customers like the range of the lens. They mention that it has a wide zoom range, covering an ideal focal range. The lens takes really wide and clear photos, and is very sharp throughout the zoom range.

    "...The wide zoom range makes it a very useful multitasker...." Read more

    "This lens is sharp, clear, and a very useful range to go well with my 18/135mm lens I had with this camera...." Read more

    "...on D5600 on several points - it is more compact, lighter, has slightly greater range, does not make any noise as far as I can hear..." Read more

    "THE Best Pentax lens I've had... Period.EXCELLENT zoom range, making it a superb One-Lens rig for an awfully broad range of photography, very..." Read more

    10 customers mention10 positive0 negative

    Customers find the noise of the lens to be fairly quiet. They also appreciate the fast AF and the PLM autofocus.

    "...Botom line, it takes very sharp images, focuses quickly and quietly and is very light." Read more

    "...The PLM focus is unbelievably quick, silent, and does not have the hunting issues that Pentax often suffers from...." Read more

    "This lens is a phenomenal value - light, PLM autofocus is very quiet and very fast (in good light), the lens is decently fast, and the pictures are..." Read more

    "...The Ultrasonic focusing is extremely fast and quiet, and as it's also weather sealed, when it's put on one of the weather sealed Pentax bodies you..." Read more

    24 customers mention16 positive8 negative

    Customers have mixed opinions about the focus adjustment of the camera lens. Some mention that it has near instantaneous focus in most cases with good lighting, and very quick even in more. They say that it's quiet and accurate autofocusing, with longer reach on both ends. However, others say that the video autofocus is terrible and it does not autofocus well at a distance. Some customers also mention that the lens requires a -4 focus adjustment on a K-S2 while none for the 18-135. Overall, opinions are mixed and it'd be best to read the reviews carefully before making a purchase.

    "...The focus was spot on even if the shutter was not as fast as I would like. the flower was taken from about 10 inches away at 190mm f6.3...." Read more

    "...Very sharp. Auto focus is generally very quick and very accurate and if it needs a manual tweak, just grab the focus ring. No switches required...." Read more

    "...It does require a -4 focus adjustment on a K-S2 while none for the 18-135. I have not tested on my K-5IIs but I expect similar results...." Read more

    "...The auto focus is silent and fast. Very happy with the purchase...." Read more

    Excellent wide to short tele WR standard zoom
    4 Stars
    Excellent wide to short tele WR standard zoom
    Aug 2016 updateTook this lens on a multi-week vacation in Hong Kong. The weather was hot and humid. Together with a K-3II and this lens, the combination performed flawlessly. The three attached pictures were taken with this combination. All hand held except for the night scene. A fast lens (ie f/2.8 or better) is not required for this type of scene.Nov 2015 updateI now have spent more time and come to really appreciate the strengths of this lens. Corner sharpness is head and shoulder better than the Tamron 17-50! This is a big surprise to me. At 50 mm, the FA 50 f/1.4 is still better at comparable aperture, but not by much. This finding actually presents a problem for me - I am starting to look for a better fast standard zoom.***** Original review *****I have a read a lot of reviews on this lens. But before saying anything, I need to state that I already have a Pentax 18-135 and Tamron 17-50. The Tamron 17-50 is my most used lens and with the 18-135 as my rainy day lens. The two main reasons for considering this 16-85 is 1) better optics than the 18-135 and 2) the wider 16 mm than either the 17-50 or 18-135. The 1mm difference between the 17mm on the Tamron and 16mm on the Pentax is huge. I like WA lens; I have a Sigma 8-16 UWA, Samyang 8mm & 14mm. With this 16-85, it will reduce the number of times I need to swap lenses. I am not so concerned with losing the 85-135 region because I have several lenses to cover that, including Pentax 55-300, Pentax 50-135, and Sigma 70-200.In terms of optical performance, it does not disappoint me. It is significantly sharper than the 18-135 especially wide open aperture. It is comparable to the Tamron 17-50 at corresponding focal length and aperture. In other words, I can really get along well with this WR combination - 16-85 and 55-300 - for casual situations and landscape photography where fast aperture is not usually needed. I have not tested flare resistance, but reports so far seems to confirm the superiority of the HD coating. AF is very fast and silent; it seems to be faster than 18-135. It does require a -4 focus adjustment on a K-S2 while none for the 18-135. I have not tested on my K-5IIs but I expect similar results.The lens is much larger than my expectation. Both the 18-135 and Tamron 17-50 are small compared to this 16-85. So I am not saving space when I substitute this 16-85 for the Tamron 17-50. The filter size is 72 vs 67 on the Tamron. The lens is well build but not heavy despite the size. The lens hood is well design.I took one star off because it is not perfect. It is substantially more expensive than either the 18-135 or the Tamron 17-50. Aperture is neither fast nor constant. I would pay a little more to have constant f/4.0. The slower aperture especially towards the long FL end does not lend itself to challenging low light photography.In summary, I highly recommend this lens if you can live within the constraints of the lens. WR is handy if you find yourself in wet or rainy environment.
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    Top reviews from the United States

    Reviewed in the United States on June 25, 2022
    Size: HD DA 55-300mm F4.5-6.3 PLMVerified Purchase
    Customer image
    5.0 out of 5 stars Amazingly general purpose lens with excellent close ability
    Reviewed in the United States on June 25, 2022
    I bought this for sports photography to complement my new K3 Mark III.
    What I found was this lens does remarkably well for all around work as well as having the ability to do spectacular macro photography. It's not 1-1 but for flowers, and closeups, the color and detail are amazing.
    The speed of focus is world's better than the previous 55-300 ED. The new focusing system is lightning fast, and solid. Note the egret and heron photos - these were a hip-shoot of an egret and heron leaping into the air, I turned as fast as I could and just held the shutter for a burst at 300mm hoping to get a shot. The focus was spot on even if the shutter was not as fast as I would like. the flower was taken from about 10 inches away at 190mm f6.3.
    For a general purpose, lightweight walk around lens this is a winner.
    Images in this review
    Customer image Customer image Customer image
    Customer imageCustomer imageCustomer image
    3 people found this helpful
    Report
    Reviewed in the United States on July 21, 2017
    Size: HD DA 55-300mm F4.5-6.3 PLMVerified Purchase
    25 people found this helpful
    Report
    Reviewed in the United States on January 1, 2024
    Size: HD DA 55-300mm F4.5-6.3 PLMVerified Purchase
    Reviewed in the United States on October 21, 2015
    Size: HD DA 16-85mm F3.5-5.6Verified Purchase
    Customer image
    4.0 out of 5 stars Excellent wide to short tele WR standard zoom
    Reviewed in the United States on October 21, 2015
    Aug 2016 update
    Took this lens on a multi-week vacation in Hong Kong. The weather was hot and humid. Together with a K-3II and this lens, the combination performed flawlessly. The three attached pictures were taken with this combination. All hand held except for the night scene. A fast lens (ie f/2.8 or better) is not required for this type of scene.

    Nov 2015 update

    I now have spent more time and come to really appreciate the strengths of this lens. Corner sharpness is head and shoulder better than the Tamron 17-50! This is a big surprise to me. At 50 mm, the FA 50 f/1.4 is still better at comparable aperture, but not by much. This finding actually presents a problem for me - I am starting to look for a better fast standard zoom.

    ***** Original review *****

    I have a read a lot of reviews on this lens. But before saying anything, I need to state that I already have a Pentax 18-135 and Tamron 17-50. The Tamron 17-50 is my most used lens and with the 18-135 as my rainy day lens. The two main reasons for considering this 16-85 is 1) better optics than the 18-135 and 2) the wider 16 mm than either the 17-50 or 18-135. The 1mm difference between the 17mm on the Tamron and 16mm on the Pentax is huge. I like WA lens; I have a Sigma 8-16 UWA, Samyang 8mm & 14mm. With this 16-85, it will reduce the number of times I need to swap lenses. I am not so concerned with losing the 85-135 region because I have several lenses to cover that, including Pentax 55-300, Pentax 50-135, and Sigma 70-200.

    In terms of optical performance, it does not disappoint me. It is significantly sharper than the 18-135 especially wide open aperture. It is comparable to the Tamron 17-50 at corresponding focal length and aperture. In other words, I can really get along well with this WR combination - 16-85 and 55-300 - for casual situations and landscape photography where fast aperture is not usually needed. I have not tested flare resistance, but reports so far seems to confirm the superiority of the HD coating. AF is very fast and silent; it seems to be faster than 18-135. It does require a -4 focus adjustment on a K-S2 while none for the 18-135. I have not tested on my K-5IIs but I expect similar results.

    The lens is much larger than my expectation. Both the 18-135 and Tamron 17-50 are small compared to this 16-85. So I am not saving space when I substitute this 16-85 for the Tamron 17-50. The filter size is 72 vs 67 on the Tamron. The lens is well build but not heavy despite the size. The lens hood is well design.

    I took one star off because it is not perfect. It is substantially more expensive than either the 18-135 or the Tamron 17-50. Aperture is neither fast nor constant. I would pay a little more to have constant f/4.0. The slower aperture especially towards the long FL end does not lend itself to challenging low light photography.

    In summary, I highly recommend this lens if you can live within the constraints of the lens. WR is handy if you find yourself in wet or rainy environment.
    Images in this review
    Customer image Customer image Customer image Customer image Customer image
    Customer imageCustomer imageCustomer imageCustomer imageCustomer image
    37 people found this helpful
    Report

    Top reviews from other countries

    Translate all reviews to English
    Artphoto
    2.0 out of 5 stars Bad copy,won't AF properly
    Reviewed in Canada on June 22, 2023
    Size: HD DA 16-50mm F2.8 PLMVerified Purchase
    Ingmar
    5.0 out of 5 stars Gran lente!
    Reviewed in Mexico on September 22, 2022
    Size: HD DA 16-85mm F3.5-5.6Verified Purchase
    Steveo89
    5.0 out of 5 stars Focuses lightning fast, nice colors, and sharp too!
    Reviewed in Canada on June 12, 2021
    Size: HD DA 55-300mm F4.5-6.3 PLMVerified Purchase
    Customer image
    Steveo89
    5.0 out of 5 stars Focuses lightning fast, nice colors, and sharp too!
    Reviewed in Canada on June 12, 2021
    I purchased this lens to use with a Pentax K-70 to get more reach. I was pleasantly surprised by the quality of images I can get with this lens. It is quite sharp in the center throughout the zoom range and the corners improve as the lens is stopped down. It is probably the weakest right at 300 mm but the center is still acceptable. Bokeh is pleasant although there is not a ton depending on the shooting situation. The biggest difference between this and other Pentax lenses is the focusing speed. This PLM lens focuses lightning fast and is accurate, I hope that they manufacture other lenses with this technology. Given the aperture range of this lens you probably wont be able to do much shooting in lower light scenarios but the modern Pentax bodies have strong higher ISO performance that can help compensate.

    Overall I highly recommend this lens to someone who wants more reach and weather sealing for their Pentax camera without breaking the bank.
    Images in this review
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    Customer image
    One person found this helpful
    Report
    fpatricka
    5.0 out of 5 stars Bien con un Pentax KP
    Reviewed in Spain on August 6, 2023
    Size: HD DA 16-85mm F3.5-5.6Verified Purchase
    L.S.
    5.0 out of 5 stars Un ojo de pez muy muy recomendable claro preciso y muy buen manejo incluso modo manual
    Reviewed in Spain on July 18, 2023
    Size: HD DA 10-17mm Fish Eye 10-17mm F3.5-4.5Verified Purchase