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Pentax SMC DA 18-135mm f/3.5-5.6 ED AL DC WR Zoom Lens

The Pentax 18-135mm f/3.5-5.6 ED AL DC WR is a 18–135mm f/3.5 lens designed for Pentax K mount cameras. Used copies start from $116.62 on GearFocus, with buyer protection on every purchase.

Pentax SMC DA 18-135mm f/3.5-5.6 ED AL DC WR Zoom Lens

Pentax SMC DA 18-135mm f/3.5-5.6 ED AL DC WR Zoom Lens

Pentax 18-135mm f/3.5-5.6 ED AL DC WR — image 1
Pentax 18-135mm f/3.5-5.6 ED AL DC WR — image 2
Pentax 18-135mm f/3.5-5.6 ED AL DC WR — image 3
Pentax 18-135mm f/3.5-5.6 ED AL DC WR — image 4
Pentax 18-135mm f/3.5-5.6 ED AL DC WR — image 5
Pentax 18-135mm f/3.5-5.6 ED AL DC WR — image 6
Pentax 18-135mm f/3.5-5.6 ED AL DC WR — image 7

Pentax DA 18-135mm f3.5-5.6 SMC ED AL DC WR Lens

Condition: Good

Product Highlights

  • Wide 18-135mm focal range
  • Weather-resistant design
  • Smooth DC motor autofocus
  • Compact and lightweight

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Used Pentax 18-135mm f/3.5-5.6 ED AL DC WR Listings on GearFocus

Pentax DA 18-135mm f3.5-5.6 SMC ED AL DC WR Lens
Pentax DA 18-135mm f3.5-5.6 SMC ED AL DC WR Lens

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$116.62

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Lens Overview — Pentax 18-135mm f/3.5-5.6 ED AL DC WR

The Pentax SMC DA 18-135mm f/3.5-5.6 is a versatile zoom lens built exclusively for the Pentax K mount and designed around an APS-C sensor format. Covering a focal length range from 18mm to 135mm, it offers a wide spread of shooting situations in a single optic — from wider environmental shots to compressed mid-telephoto framing. The maximum aperture opens to f/3.5 at the wide end, stepping to f/5.6 as you zoom toward 135mm, which is typical for a lens of this zoom range.

Autofocus is supported alongside manual focus control, giving shooters flexibility depending on the situation. The lens accepts 62mm filter thread accessories, making it compatible with a broad range of common filters. At 405 grams, it sits in a manageable weight class for an 18-135mm zoom, making it a reasonable walk-around option for Pentax DSLR users.

Image stabilization is not included in this lens, so photographers who need shake compensation will need to rely on any in-body stabilization their camera body may provide. The Pentax K mount connection means it is compatible with Pentax's DSLR ecosystem as a standard zoom solution.

Key Features — Pentax 18-135mm f/3.5-5.6 ED AL DC WR

18-135mm Zoom Range: A 7.5x zoom ratio covering wide-angle through mid-telephoto on APS-C, equivalent to roughly 27-200mm in full-frame terms, making it a capable single-lens solution for travel and everyday shooting.

Weather-Resistant Construction: WR sealing protects against dust and moisture, pairing well with Pentax's weather-sealed DSLR bodies for outdoor use in variable conditions.

DC Autofocus Motor: An internal DC motor drives autofocus directly within the lens for quieter and more responsive focusing compared to older screw-drive systems.

ED and AL Elements: Extra-low Dispersion and Aspherical lens elements work together to reduce chromatic aberration and distortion across the zoom range.

f/3.5 Maximum Aperture: Opens to f/3.5 at the 18mm wide end, providing reasonable light intake for a general-purpose zoom lens.

Pentax K Mount / APS-C: Designed specifically for the APS-C sensor format on Pentax K-mount DSLRs, with image circle optimized for those bodies.

Lens Specifications — Pentax 18-135mm f/3.5-5.6 ED AL DC WR

Pentax 18-135mm f/3.5-5.6 ED AL DC WR full specifications
SpecDetail
Use CasesTravel
Lens TypeZoom
FormatAPS-C / DX
Zoom/PrimeZoom
Focal Length18–135mm
Maximum Aperturef/3.5
Camera SystemDSLR
Lens MountPentax K
AutofocusYes
Focus TypeAuto, Manual
Image StabilizationNone
Filter Thread62mm

Description — Pentax 18-135mm f/3.5-5.6 ED AL DC WR

The Pentax SMC DA 18-135mm f/3.5-5.6 is a standard zoom lens built for the Pentax K mount and optimized for APS-C format DSLR cameras. Its focal length range spans 18mm to 135mm, making it a single-lens solution for a wide variety of everyday shooting scenarios. The maximum aperture starts at f/3.5 at 18mm and narrows to f/5.6 at the 135mm end, which is characteristic of lenses in this zoom class.

Both autofocus and manual focus are supported, allowing photographers to work in whichever mode suits the moment. The lens features a 62mm filter thread, compatible with a wide selection of commonly available photographic filters. Weighing in at 405g, it remains manageable for extended use.

It is worth noting that image stabilization is not present in this lens design, so any stabilization in use would need to come from a compatible Pentax camera body. As a zoom-type lens within the standard focal length range category, it is well-suited for Pentax DSLR shooters looking for broad coverage without swapping lenses.

Pros — Pentax 18-135mm f/3.5-5.6 ED AL DC WR

  • ✓Wide zoom range from 18mm to 135mm covers a broad variety of shooting scenarios in a single lens
  • ✓Maximum aperture of f/3.5 at the wide end offers reasonable light gathering at 18mm
  • ✓Both autofocus and manual focus modes are supported for shooting flexibility

Cons — Pentax 18-135mm f/3.5-5.6 ED AL DC WR

  • ✗No image stabilization included — stabilization must come from the camera body if available
  • ✗Variable maximum aperture reaches only f/5.6 at the 135mm end, limiting light in telephoto shooting
  • ✗Restricted to the Pentax K mount, so it is not compatible with other camera systems

Videos — Pentax 18-135mm f/3.5-5.6 ED AL DC WR

Pentax 18-135mm f/3.5-5.6 DA WR zoom lens review — leehaze1

Resources & Downloads — Pentax 18-135mm f/3.5-5.6 ED AL DC WR

Manuals & Guides

Frequently Asked Questions — Pentax 18-135mm f/3.5-5.6 ED AL DC WR

What camera mount does this lens use?+
This lens is built for the Pentax K mount. It is designed for use with Pentax DSLR cameras and is not compatible with other camera systems or mounts.
Does this lens have image stabilization?+
No, the specifications confirm that image stabilization is listed as None on this lens. Photographers who need shake reduction will need to rely on any stabilization system built into their camera body.
What is the filter thread size on this lens?+
The lens uses a 62mm filter thread. This is a widely available size, so finding compatible filters such as polarizers or ND filters should be straightforward.
Is this lens compatible with full-frame Pentax cameras?+
This lens is designed for the APS-C format. While it mounts to any Pentax K mount body, its image circle is optimized for APS-C sensors and it may not cover the full frame on larger-format Pentax bodies.
Does this lens support autofocus?+
Yes, this lens supports both autofocus and manual focus. Autofocus is confirmed in the specifications, giving you the option to switch between focusing modes depending on your shooting needs.
How heavy is this lens?+
The lens weighs 405 grams. For an 18-135mm zoom intended as a versatile walk-around option, this is a relatively manageable weight for everyday use.

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