Pentax D FA 28-105mm f/3.5-5.6 ED DC WR

Product Code. 1012141

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Details for Pentax D FA 28-105mm f/3.5-5.6 ED DC WR

K-Mount Lens/Full-Frame Format

Aperture Range: f/3.5-5.6 to f/22-32

ED Glass Elements

Super Protect & HD Multi-Layer Coatings

Supersonic Direct-Drive AF Motor

Quick-Shift Focus System

Minimum Focus Distance: 1.64'

Dust- and Weather-Resistant Design

9-Blade Rounded Diaphragm

Versatile, relatively compact, and compatible with full-frame K-mount DSLRs, the HD PENTAX-D FA 28-105mm f/3.5-5.6 ED DC WR Lens from Pentax will be a perfect pairing for many shooters thanks to its wide-angle to medium telephoto range. The lens also features an f/3.5-5.6 variable aperture to help keep size down while also utilizing ED glass elements to reduce aberrations. The lens sports both Super Protect and HD multi-layer coatings in order to protect against accidental damage and reduce flaring and ghosting.

Focusing is fast and quiet thanks to the integration of a Supersonic Direct-Drive Motor and the lens has a Quick-Shift feature for fast switching between auto and manual focusing. The lens also focuses as close as 1.64' and it has a 9-blade rounded aperture diaphragm for smooth out-of-focus elements. Additionally, it is dust- and water-resistant with eight seals to protect from intrusion.

Covering wide-angle to medium telephoto perspectives, this versatile 28-105mm zoom offers a convenient option for full-frame K-mount Pentax DSLRs and is also compatible with APS-C models, where it will provide a 43-161mm equivalent focal length range.

Variable f/3.5-5.6 maximum aperture ensures a compact size while offering a wide range of versatile focal lengths.

ED glass elements are featured in the lens design and help to control chromatic aberrations and reduce color fringing for increased clarity and color fidelity.

The High Definition (HD) multi-layer coating is utilized to reduce reflections, flare, and ghosting for improved contrast and color in more trying lighting conditions.

Super Protect coating will help keep the optics safe in the event of accidental impact or if it comes in contact with water or dust.

Supersonic Direct-Drive Motor (SDM) ensures fast, quiet, and smoother autofocus operation.

A rounded nine-blade diaphragm contributes to a pleasing bokeh quality when employing shallow depth of field techniques. It is completely rounded between f/3.5-6.3 when at 28mm and between f/5.6-10 when at 105mm.

A weather-resistant design features eight seals which better permit working in inclement conditions.

Includes PH-RBS62 lens hood to limit flare from light sources.

Optional S-80-120 Soft Lens Case is available to protect lens during transport or storage.


  • Focal Length ... 28 - 105mm
  • Comparable 35mm Equivalent on APS-C Format Focal Length: 43 - 161 mm
  • Aperture ... Maximum: f/3.5 - 5.6
  • Minimum: f/22 - 32
  • Camera Mount Type ... Pentax K
  • Format Compatibility ... 35mm Film / Full-Frame Digital Sensor
  • Angle of View ... 15.5° - 53°
  • APS-C Picture Angle: 23.5° - 75°
  • Minimum Focus Distance ... 1.64' (50 cm)
  • Magnification ... 0.22x
  • Maximum Reproduction Ratio ... 1:4.5
  • Elements/Groups ... 15/11
  • Diaphragm Blades ... 9, Rounded
  • Features
  • Image Stabilization ... No
  • Autofocus ... Yes
  • Tripod Collar ... No
  • Physical
  • Filter Thread ... Front: 62 mm
  • Dimensions (DxL) ... Approx. 2.87 x 3.41" (7.29 x 8.66 cm)
  • Weight ... 15.5 oz (439 g)
  • Packaging Info
  • Package Weight ... 1.4 lb
  • Box Dimensions (LxWxH) ... 6.0 x 3.9 x 3.9"

Find other Pentax Pentax K-mount AF or compare to other products in: Pentax Camera Lenses Pentax K-mount AF