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

Model #21297

USA Version
Pentax 21297 1
Pentax 21297 1
Pentax 21297 2
Pentax 21297 3
Pentax 21297 4
Pentax 21297 5
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Weight 15.5 oz (439 g)
Dimensions (DxL) Approx. 2.87 x 3.41" (7.29 x 8.66 cm)
Filter Thread Front: 62 mm


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
Focal Length 28 - 105mm Comparable 35mm Equivalent on APS-C Format Focal Length: 43 - 161 mm
Diaphragm Blades 9, Rounded
Elements/Groups 15/11
Aperture Maximum: f/3.5 - 5.6Minimum: f/22 - 32
Camera Mount Type Pentax K


Tripod Collar No
Autofocus Yes
Image Stabilization No
User Reviews
30 August 2016

Superb walk around lens. I use it on a Pentax K1 and edge to edge sharpness at various focal lengths is good to excellent, although not quite in the class of prime lenses. Highly recommended, especially for travel photography.

27 July 2016

Haven't used it much, but looking forward to some great shots of race cars at night!

14 July 2016

Using this with Pentax K-1. There is plenty of reviews around of this lense, check them. My personal opinion: This is the best all-around and walk-around zoom choice for K-1 at this price. It is sharp "enough" from open to f16. The IQ is very good, the lens focuses fast, accurately and silently.

14 July 2016

Excellent build quality and image quality when used with the K1 full frame.

14 July 2016

This lens has absolutely changed the quality of images I was getting with my K-3. Because the lens is made for the full frame K-1 it is heavy and large compared to many of the lenses I have specifically for the smaller sensor. The image and build quality far exceed the negative of the weight.

14 July 2016

Every K-1 owner should consider this lens: light-weight, nice build quality with smooth zoom action, weather-sealed, sharp throughout the zoom range, and relatively inexpensive. Downsides include strong vignetting, and typical levels of distortion from a zoom with this much range.

14 July 2016

This lens has far out performed my expectations, it's a beast. I have even done low light/astrophotography with this lense. It's really not bad at all.

12 June 2016

I got this lens to go with a new K-1 body and it has not disappointed! It is weather sealed and I would highly recommend as a first lens on a full frame camera like the K-1. I've used Pentax manual lenses since the 70's and this lens performs even better than those, at least in terms of color and...

11 June 2016

I was pleasantly surprised by the FA 28-105mm. To my mind it out performs the tests of it that I've sen. I print my files and they are technically as good as anything I've ever done.

5 June 2016

Amazing sharpness and color.

Product Highlights
  • 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
In The Box
  • Pentax HD PENTAX-D FA 28-105mm f/3.5-5.6 ED DC WR Lens
  • PH-RBC62 62mm Lens Hood for Pentax SMC DA 18-135MM f/3.5-5.6 ED AL (IF) DC WR Lens
  • O-LC62 62mm Lens Cap
  • Rear Lens Cap (B) for Bayonet Mount Lenses
  • Limited 1-Year Warranty
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