Skip Navigation

Pentax DA 18-270mm f/3.5-6.3 Lens

Wide-to-telephoto zoom lens for Pentax K-mount digital SLRs and hybrids

Item # 815DA18270

This item is no longer available.

Shop all DSLR Lenses


Our take on the Pentax DA 18-270mm f/3.5-6.3 Lens

Budding photography enthusiasts often ask this question: If I could only have one lens — like for times when I'm traveling and don't have much storage — which one should it be? The answer is almost always a lens that affords you the biggest choice of focal length. This Pentax DA 18-270mm f/3.5-6.3 lens gives you a variety of framing options from one location, from shots that span the entire cathedral's length, to the close-up of the rosette window on the front. Only 16 ounces and 3.5 inches long, it's portable enough for an entire day's sightseeing. The 15X, 27.5-414mm equivalent range will make short work of every photo opportunity.

Product Highlights:

  • Pentax KAF3 18-270mm f/3.5-6.3 ED 15X long telephoto zoom lens with 35mm equivalent of 27.5-414mm
  • compatible with Pentax K-mount digital SLR and hybrid cameras
  • two ED (extra-low dispersion) elements correct chromatic aberration for excellent image quality and sharpness
  • constructed of 16 elements in 13 groups
  • minimum focus distance: 18"
  • minimum aperture: f/22 -f/45
  • filter size: 62mm
  • lens is 4" long, 3" in diameter
  • weight: 16 ounces
  • supplied accessories: front and rear lens caps, lens hood
  • warranty: 1 year
  • Our 60-day money-back guarantee

What's in the Box:

  • DA 18-270 F3.5-6.3 SDM lens
  • 62mm Front lens cap (installed)
  • Rear lens cap (installed)
  • PH-RBD 62mm lens hood
  • Operating Manual
  • Pentax Worldwide Service Network sheet
  • Serial Number Card

Hands-on research

Features and Specs

Brand Compatibility Pentax
Image Stabilization No
Focal Length 18-270mm
Maximum Aperture F3.5 (W) - 6.3 (T)
Weight 16 ounces
Parts Warranty 1 Year
Labor Warranty 1 Year

Product Research


Overview: The smc Pentax-DA 18-270mm F3.5-6.3ED SDM is a 15x telephoto zoom lens for Pentax D-SLR and interchangeable lens cameras. The extended 15x zoom ratio covers the long range from wide angle to super-telephoto, allowing you to photograph landscapes, portraits, sporting events, and more without changing lenses.

Lens Mount: The lens has a KAF3-mount, and can fit Pentax D-SLR and interchangeable lens cameras with KAF, KAF2 and KAF3 mounts. This includes the Pentax K-5, K-5II, K-30, and K-01 cameras.

SDM Autofocus System: The Pentax SDM autofocus system is driven by a built-in supersonic motor, which offers exceptionally smooth and quiet operation. When the lens is mounted on an SDM-compatible Pentax K-mount digital camera, the focus mode automatically switches to SDM-assisted autofocusing.

Focus Mode Shifting: Focus Mode Shifting allows you to switch the lens from Auto to Manual focus, using the switch on the lens barrel. This can be done without changing the focus mode on the camera.

Lens Hood: The lens kit includes the PH-RBD 62mm lens hood to keep unwanted light out of the lens, and protect the front of the lens. The hood can be reverse-mounted on the lens for storage. When installed, the hood adds approximately 1-7/16" to the overall length of the lens.

ED Glass: The two Extra-low Dispersion (ED) glass lens elements effective minimizes chromatic aberration to deliver bright, high-resolution images, even at the edges.


  • Focal Length: 18-270mm
  • 35mm Equivalent: 27.5-414mm
  • Lens Construction: 16 elements in 13 groups
  • Mount Type: KAF3-mount
  • Maximum Aperture: F3.5-F6.3
  • Minimum Aperture: F22-F45
  • Maximum Magnification: 0.26x
  • Angle of View: 76°-6°
  • Minimum Focus Distance: 1.6' (19.2")
  • Lens Hood: PH-RBD 62mm (included)
  • Filter Diameter: 62mm
  • Dimensions:
    • Diameter: 2.982"
    • Length: 3.973" (4.36" w/caps)
    • Weight: 16 ounces (16.5 oz. w/lens hood)

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.