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  • Pentax 21977 DA 18-135mm f/3.5-5.6 ED AL (IF) DC WR Lens for Pentax Digital SLR cameras
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Pentax 21977 DA 18-135mm f/3.5-5.6 ED AL (IF) DC WR Lens for Pentax Digital SLR cameras

by Pentax
| 10 answered questions

List Price: $529.95
Price: $372.29 & FREE Shipping
You Save: $157.66 (30%)
Only 8 left in stock.
Ships from and sold by DavisMAX.
  • Extended 7.5X zoom range is ideal for a wide range of shooting conditions.
  • Weather resistant to handle damp, inclement conditions.
  • Compact and lightweight design for easy portability.
  • Direct Current (DC) motor supports quick, quiet autofocus operation.
  • PENTAX Super Protect (SP) coating helps repel dust, water, and grease, making the lens easier to clean.
32 new 6 used from $297.99 1 refurbished from $359.00

Frequently Bought Together

Pentax 21977 DA 18-135mm f/3.5-5.6 ED AL (IF) DC WR Lens for Pentax Digital SLR cameras + Pentax K-5 IIs 16.3 MP DSLR Body Only (Black) + IR Wireless Remote Control for PENTAX Q, PENTAX DSLR (645D, K-5 II, K-5 II s, K-50, K-30, K-500, X-5, K-m, K-r, K-x, K-01, K-5, K-7, K10D, K20D, K100D, K110D, K200D, K2000) *ist (D, DL, DL2, DS, DS2) + Premium MagicFiber Microfiber Lens Cleaning Cloth
Price for all three: $1,061.94

These items are shipped from and sold by different sellers.

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Technical Details

  • Brand Name: Pentax
  • Model: 21977
  • Lens Type: zoom
  • Minimum focal length: 18 millimeters
  • Maximum focal length: 135 millimeters
  See more technical details

Read about our customers' top-rated lenses and cameras on our review pages: Lenses, Digital SLR Cameras, Compact System Cameras

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Customer Rating 4.3 out of 5 stars   (53) 4.5 out of 5 stars   (42) 4.3 out of 5 stars   (55) 4.4 out of 5 stars   (404)
Price $372.29$141.15$161.62$349.00
Shipping Free ShippingFREE ShippingFREE ShippingFREE Shipping
Sold By DavisMAXWeb OffersAnother Deal SiteAmazon.com
Lens Type zoom Standard zoom Telephoto Zoom lens
Maximum Format Size Information not provided Information not provided Information not provided APS-C / DX
Maximum Aperture Range 3.5 - 5.6 3.5 - 5.6 4 - 5.6 F3.5 - F6.3
Minimum Aperture 3.5 38 22 22
Photo Filter Thread Size 62 millimeters 58 49 millimeters 62 millimeters
Minimum Operating Distance 0.4 meters 0.25 meters 1.1 meters Information not provided
Weight 0.9 pounds 0.5 pounds 1.0 pounds 1.0 pounds
Dimension 3.0 x 3.0 x 2.9 inches 2.7 x 2.7 x 2.7 inches 8.8 x 10.9 x 7.9 inches 74.0 x 89.0 x 73.3 inches
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Product Details

  • Product Dimensions: 3 x 3 x 2.9 inches ; 14.4 ounces
  • Shipping Weight: 2 pounds (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B0043RTLA6
  • Item model number: 21977
  • Average Customer Review: 4.3 out of 5 stars  See all reviews (53 customer reviews)
  • Date first available at Amazon.com: October 1, 2010

Product Description

The smc PENTAX DA 18-135mm F3.5-5.6 ED AL (IF) DC WR has an extended 7.5X zoom range is ideal for a wide range of shooting conditions. It is weather resistant to handle damp, inclement conditions. The DA 18-135mm has a compact and lightweight design for easy portability. Direct Current (DC) motor supports quick, quiet autofocus operation. PENTAX Super Protect (SP) coating helps repel dust, water, and grease, making the lens easier to clean. PENTAX Quick Shift focus system allows instant on-the-fly switching from auto to manual focus. An aspherical lens element helps to compensate for spherical aberration to maximize image quality. Equivalent to 27.5-207mm in the 35mm format. Developed specifically for PENTAX digital SLR cameras.

Customer Questions & Answers

Customer Reviews

Focusing is quick and quiet.
Adrian
This lens is adequate for most "people" pictures and other everyday uses.
J. Blair
Focus is quiet and lens produces sharp, good color and contrast.
Stu M.

Most Helpful Customer Reviews

60 of 61 people found the following review helpful By Amazon Customer on April 12, 2011
I wasn't sure I'd like this lens from the mixed reviews, but after using mine for 3 weeks on my Pentax K-5 I'd say it's one of the best super zooms you can get for a Pentax DSLR.

Pros:
Weather resistant in rain, snow, etc.
Excellent color and contrast
Auto focus is very quick on my K-5 and quiet
Solid build, especially compared to other plastic extending zooms
Not a macro, but works surprising well for flower shots
Really smooth bokeh for closeups and telephoto
Reversible lens hood
Auto focus doesn't move the focus ring, but can be moved manually anytime for adjustments
Resistant to flare and ghosting

Cons:
Focus ring has no scale and can be moved past the "stops"
It's a varifocal zoom (zooming requires you to refocus a bit)
No aperture ring (unfortunately this is becoming a trend)
Manual focus ring is usable, but not ideal since it only turns 90 degrees (before reaching the soft stops)
Some chromatic aberrations (purple fringe) with high-contrast subjects (correctable with software, or in my K-5)
My copy shows slight visible barrel distortion from 18-24mm, good from 24mm-50mm, and slight pincushion from 50-135mm

Unfortunately this lens is not suited for serious video: where you usually want manual focus, zoom without losing focus, and the ability to rack aperture.

People also complain that the lens is soft -- a common complaint with super zooms. The real question is, "is it sharp enough." That's very subjective. My copy looked good, but a bit disappointing when pixel peeping. I tested it and found it was front focusing slightly. Easy to correct on the Pentax K7 and K5. Now it's sharp in the center, and sharp enough in the corners.

So as a travel/walkabout lens I give it 5 stars.
As a serious video lens: 3 stars -- you're better off with manual zooms and primes that give you much better control and selective focus.
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34 of 36 people found the following review helpful By powerop on September 20, 2011
Verified Purchase
With Pentax, there are not a whole lot of choices in production for a modern Pentax lens, especially for an all-around zoom. This 18-135mm is pretty much your best bet. Luckily, it performs decently well for its price. I have this lens and the 35mm F2.4 for really nice, leight-weight travel combination. The focal length of 18-135mm covers about 27 to 200mm 35mm film equivalent range, which is pretty good and covers many types of photos (landscape, portraits, group shots, and mild telephoto for wildlife). Plus the 1:4x magnification ratio means that you can also do product photography and close up of flowers. This lens has a little above average distortion at wide angle, so architecture photos are not going to be straight unless you post-process the image. The modern Pentax cameras can fix distortion in-camera too, but its slow. Vignetting, dark shaded corners, is about average..nothing I would concern myself with. Contrast is great a couple stops down from wide open. The color reponse of the lens is fantastic and typical of good Pentax glass. Its not too warm like vintage glass but great and vibrant nonetheless.

Sharpness. This is the subject everyone looks at. Pentax seemed to attempt keeping the longer focal length as sharp as possible. I feel they succeeded for the most part, at all focal length the lens performs very good a couple stops down from wide open. The CON is that the corners are very soft and blurry. I took a test shot of my carpet, pointing the camera straight down (using a bubble leveler to make sure), and at all focal lengths the corners are soft. Now, before one jumps ship, it is recommended that one read the Ken Rockwell article on the importance of sharpness.
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25 of 26 people found the following review helpful By Eolake on January 13, 2011
Verified Purchase
From my experience with Pentax's superb non-zoom lenses, I had hoped this would be "perfect" also. But like most long-range zooms I've tried, it gets soft in the corners on some settings.
So for really critical work, I go for my primes, like the 50mm 1.4. But for travel and street photography, this is very good.
It's not fast, so Pentax's nice in-body stabilization comes in handy, for a bit slower shutter speeds.
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20 of 21 people found the following review helpful By G.M. on July 24, 2013
Verified Purchase
Opening the box and holding this lens for the first time was one of the most exhilarating feelings I have had since initially touching my first K5. The weight was perfect, the size was perfect, attached to the camera it brought a well balanced feel, and the zoom and focus ring action was more than ideal. The purpose of this purchase was to have a WR lens with GOOD corner to corner sharpness at 20mm-60mm at f5 stops, and GOOD center sharpness from f6-8 stops from 60mm to 100mm not expecting good corners at the longer end. These are NOT unrealistic expectations given the poor history of reviews for this lens elsewhere than here on Amazon. Additionally, only primes give great performance, standard zooms a good performance with some sweet spots, and long zooms like this I only expect half the range to be good. Anything like an 18-200 is not conducive to decent image quality. Its just not going to happen due to the laws of physics.

So, after unboxing the 18-135, I shot the first shot: the DC motor coupled with accurate Auto Focus (AF) left me saying "WOW". Yes, it is that smooth and accurate. It brings back memories of the simplicity of Point and Shoot (PNS) cameras.

Then came reviewing the pictures taken with this lens. Once again, it brought back memories of PNS cameras. NOT GOOD. In fact, PNS cams do not have the issues this lens provides. I returned my first 18-135 and bought a second with similar results as the first lens. Please see specifics below.

I have the following lenses in my arsenal to make reference to:

Pentax A 50mm f1.7 and Pentax M 50mm f1.
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