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Pentax SMC DA Series 50-135mm f/2.8 ED IF SDM Telephoto Zoom Lens for Pentax and Digital SLR Cameras

3.4 3.4 out of 5 stars 97 ratings

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Purchase options and add-ons

Brand Pentax
Focal Length Description 50-135 millimeters
Lens Type Telephoto
Compatible Mountings Pentax KAF2
Camera Lens Description 50 month

About this item

  • 50-135mm telephoto zoom lens with F/2.8 maximum aperture for Pentax digital SLR cameras
  • Aspherical elements, special optical-glass elements, and original glass coatings
  • Tightly sealed weather- and dust-resistant housing stands up to rainy or dusty conditions
  • SDM system produces smooth, quiet autofocusing; SP coating protects exposed lens elements
  • Measures 3 inches in diameter and 5.4 inches long; weighs 24.2 ounces without hood
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Product Description

Product Description

Pentax SMC DA* Series 50-135mm f/2.8 ED IF SDM Telephoto Zoom Lens for Pentax and Digital SLR Cameras

Amazon.com

Designed for exclusive use with Pentax digital SLR cameras, the Pentax DA series 50-135mm telephoto zoom lens makes it easy to capture close-in sports shots or intimate wildlife photography. The lens is distinguished by its aspherical elements, special optical-glass elements, and original glass coatings, which help produce a high contrast, unmatched clarity, and edge-to-edge sharpness. The lens also boasts a tightly sealed weather- and dust-resistant housing that stands up to rainy or dusty conditions. And users will love the new SDM system, which produces smoother, quieter autofocusing using a built-in supersonic motor. Other details include a Pentax-original Quick-Shift Focus System that switches instantly to manual-focus operation, a Pentax SP coating that protects the exposed lens elements, and a focal length equivalent to 76.5-207mm in the 35mm format.

  • Lens mount: Pentax KAF2
  • Lens construction: 18 elements in 14 groups
  • Angle of view: 31.5 to 11.9 degrees (when used with Pentax digital SLR camera body)
  • Aperture control: Automatic
  • Minimum aperture: F22
  • Metering system: TTL open-aperture metering
  • Minimum focusing distance: 1 meter
  • Filter size: 67mm
  • Maximum magnification: 0.17x
  • Dimensions: 3 inches in diameter and 5.4 inches long
  • Weight: 24.2 ounces (without hood)

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Pentax

Pentax SMC DA Series 50-135mm f/2.8 ED IF SDM Telephoto Zoom Lens for Pentax and Digital SLR Cameras


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Customer reviews

3.4 out of 5 stars
3.4 out of 5
97 global ratings

Customers say

Customers like the contrast, sharpness and noise of the camera lens. For example, they mention it's an impressive lens in both feel and looks, and it produces excellent quality images. That said, they're happy with the image quality and quality. That being said, opinions are mixed on the focus and weight.

AI-generated from the text of customer reviews

26 customers mention26 positive0 negative

Customers are satisfied with the contrast of the lens. They mention that it's a beautiful lens, with impressive feel and looks. The lens produces excellent quality images, and is regarded as one of the best Pentax lenses ever made. Overall, customers are happy with their purchase and recommend it to others.

"...I am very impressed with pentax. This is a great lens, it is great for outdoor shots and can produce some excellent evening as well as some indoor..." Read more

"...Color: excellent color rendition, rich and real.DOF: can be very thin when wide open and produce a very good blur effect..." Read more

"...That zoom ring feels smooth, with a good amount of resistance.The focus ring is very similar, it's even larger than the zoom ring...." Read more

"...Although the lens body is constructed of plastic, it looks and feels solid and of exceptional quality; a real joy to handle...." Read more

16 customers mention16 positive0 negative

Customers are satisfied with the sharpness of the lens. They mention that it is unquestionably sharper across all apertures, produces tack sharp images, and is in perfect shape.

"...I can definately say this is a very sharp lens and dont listen to all the pentax haters out there pentax makes some of the best products in my..." Read more

"...Focusing: not fast enough compare with my DA70mm ltdSharpness: very sharp. But in 100% crop, it is not sharp as the DA70mm..." Read more

"...3 feet sucks.Outdoors, this lens is at its best. Sharpness is impressive at any focal length, including the extremes...." Read more

"...What I found was that the Pentax lens was unquestionably sharper across all apertures, but the weakest at f2.8 (although not that bad at all) with..." Read more

15 customers mention15 positive0 negative

Customers are satisfied with the noise of the lens. They mention that it has an ultra-quiet focusing mechanism and a firm zoom control. They also appreciate the SDM feature, which is far quieter than the camera's screw-drive motor. Overall, customers are happy with the performance of this lens.

"...The sdm focus motor is virtually silent, all to be heard is the movement of the parts inside the lens while focusing...." Read more

"...On the upside, the focusing mechanism is whisper quiet. I hear it when I operate the camera, but anyone around me can't hear it at all...." Read more

"...The SDM feature is certainly far quieter than the camera's screw-drive motor and very pleasing to have, but I'm not convinced it's any quicker...." Read more

"...It continues to perform well. I have had no problems with auto focus motor in the lens (SDM)and quickness of auto focus has improved with placing..." Read more

11 customers mention11 positive0 negative

Customers are satisfied with the focal length of the lens. They mention that it has a powerful range of focal lengths, and that it focuses and zooms internally. The lens is a great zoom lens, and the focal point is perfect for a walk-around lens. The focusing is excellent, and would not be a problem for most people. The focus ring is very similar to the zoom ring, and it provides a different view with prime lens.

"...Either way the focusing is still excellent and would not be a problem for most people, it is still plenty fast...." Read more

"...But the others aspects are much better. The focal length is perfect for a walk around lens if you take no much wide shot...." Read more

"...the gold highlights, the green line near the mount, and the massive zoom and focus rings...." Read more

"...The focus and zoom rings are large and easily turned with no zoom drift as some have complained about with other Pentax zooms...." Read more

11 customers mention9 positive2 negative

Customers like the image quality of the lens. They say the photos from this lens are amazing, and it is well worth the money. The lens is also optically fantastic and produces a very good blur effect. Customers also say it is adequate to take photos of their kids and is a good lens to take flowers and portraits.

"...I have done a little macro work with this lens and the images are pretty nice.... had to crop a little and the images came out a little soft but it..." Read more

"...It is a good lens to take flowers and portraits.It is truly "water-resistance" after I had a test shoot under a stormy rain...." Read more

"...This lens is still optically fantastic, and most of the benefits I listed in initial review are still valid...." Read more

"...hand, it is quite accurate once it gets there and has been quite adequate to take photos of my (quite active) kids...." Read more

8 customers mention8 positive0 negative

Customers are satisfied with the quality of the lens. They mention that it performs well, gives good results, and works perfectly after the fall. The size, weight, looks, and other features are perfect. The lens hood does a perfect job of keeping stray reflections off the lens, and it works great on both cameras.

"...a little and the images came out a little soft but it is capable of a little macro work wich is nice, just remember you will probably have to..." Read more

"...I have yet to be able to induce flare, even on purpose. The lens hood does a perfect job of keeping stray reflections off the lens...." Read more

"...It continues to perform well...." Read more

"...The size, weight, looks, etc are perfect. I have tried it on heavy rain during a football (soccer) game and worked flawlessly!..." Read more

25 customers mention14 positive11 negative

Customers are mixed about the focus of the camera lens. Some mention that it's fast, quiet, and accurate, while others say that it is not fast focusing. Some customers also report issues with the SDM focus system starting to slow down over time. The focus throw is long, and you can feel the mechanism rolling through the lens. However, some customers report that the auto focus just completely stopped working after a year of light usage.

"...Focusing is fairly quick and can hunt a tiny bit if you are really close (remember its not a macro lens) to the subject or there is an extreme lack..." Read more

"...For the lens, it is not fast focusing as my other lens DA180-135mm, DA70mm. But the others aspects are much better...." Read more

"...But it is fast...for what? At this range, who needs fast? I sure didn't...." Read more

"...But the failed auto-focus motor, coupled with the fact that this is a serious, widespread problem, have left me with a bitter taste in my mouth...." Read more

11 customers mention6 positive5 negative

Customers are mixed about the weight of the camera lenses. Some mention it's built fantastic, but still not too heavy. Others say that it'd be a bit heavy.

"...The images are very sharp and light in weight that you no need a tripod to carry...." Read more

"...The weight is also a bit much to carry around your neck during a long shooting session...." Read more

"...I liked the fact it was a small, light lens, but it was a set focal length for a high price, and I opted to return it since I could get the same..." Read more

"...It’s just too heavy to routinely carry around." Read more

Excellent and versatile lens... a MUST HAVE!
5 Stars
Excellent and versatile lens... a MUST HAVE!
This is my first DA* lens and I must say I am very impressed. I am sad to say that my camera slipped off of a shelf from alomost 5 feet and on to a granite floor. The camera suffered virtually no damage and the lens was perfect, not a mark or a scratch. Both worked perfectly after the fall. I am very impressed with pentax. This is a great lens, it is great for outdoor shots and can produce some excellent evening as well as some indoor shots. If you like lots of low light photography you may want to get a faster lens but at 2.8 it performs real well. I can definately say this is a very sharp lens and dont listen to all the pentax haters out there pentax makes some of the best products in my opinion. Also pentax has a long history and with so many lenses that will fit their camera bodies you just cant go wrong. The DA* 50-135 is a pretty large lens so be ready for the heft, although it is still smaller then similar lenses from canikon. All movement is within the lens wich is a nice feature. The sdm focus motor is virtually silent, all to be heard is the movement of the parts inside the lens while focusing. Focusing is fairly quick and can hunt a tiny bit if you are really close (remember its not a macro lens) to the subject or there is an extreme lack of light. This is normal for pentax and i have the k20d but i think it is much improved with the k7. Either way the focusing is still excellent and would not be a problem for most people, it is still plenty fast. I have done a little macro work with this lens and the images are pretty nice.... had to crop a little and the images came out a little soft but it is capable of a little macro work wich is nice, just remember you will probably have to manually focus if you want to do any macro. I posted two pics in the customer image gallery and they are both in a strip mall during the evening.... beautifull lens. I highly recommend this lens it is very versatile. I have only really been able to test this lens for about a day and look forward to using it for some portrait/glamour shots. If you are looking for a pro grade lens get it. If you dont have any da* lenses i think this is perfect for your first DA* lens. I promise you will be pleased!
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Top reviews from the United States

Reviewed in the United States on February 28, 2010
Customer image
5.0 out of 5 stars Excellent and versatile lens... a MUST HAVE!
Reviewed in the United States on February 28, 2010
This is my first DA* lens and I must say I am very impressed. I am sad to say that my camera slipped off of a shelf from alomost 5 feet and on to a granite floor. The camera suffered virtually no damage and the lens was perfect, not a mark or a scratch. Both worked perfectly after the fall. I am very impressed with pentax. This is a great lens, it is great for outdoor shots and can produce some excellent evening as well as some indoor shots. If you like lots of low light photography you may want to get a faster lens but at 2.8 it performs real well. I can definately say this is a very sharp lens and dont listen to all the pentax haters out there pentax makes some of the best products in my opinion. Also pentax has a long history and with so many lenses that will fit their camera bodies you just cant go wrong. The DA* 50-135 is a pretty large lens so be ready for the heft, although it is still smaller then similar lenses from canikon. All movement is within the lens wich is a nice feature. The sdm focus motor is virtually silent, all to be heard is the movement of the parts inside the lens while focusing. Focusing is fairly quick and can hunt a tiny bit if you are really close (remember its not a macro lens) to the subject or there is an extreme lack of light. This is normal for pentax and i have the k20d but i think it is much improved with the k7. Either way the focusing is still excellent and would not be a problem for most people, it is still plenty fast. I have done a little macro work with this lens and the images are pretty nice.... had to crop a little and the images came out a little soft but it is capable of a little macro work wich is nice, just remember you will probably have to manually focus if you want to do any macro. I posted two pics in the customer image gallery and they are both in a strip mall during the evening.... beautifull lens. I highly recommend this lens it is very versatile. I have only really been able to test this lens for about a day and look forward to using it for some portrait/glamour shots. If you are looking for a pro grade lens get it. If you dont have any da* lenses i think this is perfect for your first DA* lens. I promise you will be pleased!
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Reviewed in the United States on February 19, 2015
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Reviewed in the United States on May 6, 2012
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Top reviews from other countries

Translate all reviews to English
jeremyw
5.0 out of 5 stars High quality fast telephoto for Pentax DSLRs, with okay AF speeds
Reviewed in Canada on January 25, 2020
Richard Johnson
5.0 out of 5 stars A beautiful lens
Reviewed in the United Kingdom on February 19, 2020
Gabi
5.0 out of 5 stars Mein bestes Objektiv für Pentax K
Reviewed in Germany on March 8, 2016
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Gabi
5.0 out of 5 stars Mein bestes Objektiv für Pentax K
Reviewed in Germany on March 8, 2016
Habe das Objektiv vor 16 Monaten hier bei Amazon erstanden und mir bewusst viel Zeit gelassen mit meiner Bewertung, um es in allen möglichen und unmöglichen Situationen zu testen. Hauptanschaffungsgrund ist die Sport und Tierfotografie. Daher war ein Objektiv mit schnellem Autofokus und hoher Lichtstärke erforderlich. Im Dezember 2014 kostete das Pentax hier bei Amazon noch 999 Euro, was ich schon happig fand, umso erstaunter stellte ich einige Monate später fest das es inzwischen gut 70 Euro teurer geworden ist. Das Objektiv ist sehr wertig und auch nicht zu schwer, ich empfinde es als angenehm, sofern ich Kamera und Objektiv nicht den ganzen Mittag um den Hals hängen habe. Verwenden tue ich es an der K50, mit der das Objektiv wunderbar harmoniert. Im Freien, bei gutem Licht werden praktisch alle Fotos gut bis sehr gut. Bei Offenblende noch nicht ganz scharf, das trifft aber wohl auf die meisten Objektive zu. Zwischen Blende 4,0 und 8,0 werden die Fotos am Besten.
Das Bokeh empfinde ich als harmonisch. Der Autofokus ist schnell und recht treffsicher, dabei auch nicht so laut, und innenfokussierend, was sehr angenehm ist. Die Königsdisziplin ist für mich das Fotografieren in einer Schwimmhalle.
Hier habe ich leider nicht immer das passende Licht, dennoch sind mit etwas Übung und den passenden Kameraeinstellungen viele gute Actionbilder entstanden. Wenn ich auf Fototour gehe habe ich dieses Objektiv immer dabei. Es ist mein Bestes, und auch Teuerstes.
Für mich hat sich die Anschaffung trotz des hohen Preises gelohnt.
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5 people found this helpful
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Javier
5.0 out of 5 stars Una gran lente de Pentax
Reviewed in Spain on June 19, 2014
5 people found this helpful
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Grosbill01
5.0 out of 5 stars Superbe Objectif
Reviewed in France on June 24, 2012
6 people found this helpful
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