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
B h photo.34921152
16 June 2016

This lens offers a nice zoom range and high quality optics. This lens compares with my Canon 24-105mm lens that I have been using for the past 10 years for zoom coverage. The Pentax lens in my opinion is crisper than my Canon lens. I have not found any negatives with this lens.

9 November 2017

Works for me as a basic lens on my Pentax Full Frame K1 camera. Easy to use and totally awesome picture quality. Quality solidly built lens. This is not cheap plastic construction. Fine optics for a lens in this price point.

B h photo.34921152
3 weeks ago

This is my new walk-around lens. It is sharp as a tack, and at f/3.5 it is fast enough for almost everything. It only comes off my K-1 when I am in a very low light position, or need a longer telephoto lens

24 November 2017

The zoom hangs up. After 4 months of very light use, something inside came loose and it stops it from turning.

25 October 2017

This is a great lens. This is actually my 2nd lens my first one fell over on the tripod and hit head on. It still worked, the the zoom ring was a little stiff to rotate. It's nice and clear and a great all around lens.

13 September 2017

Excellent walk-around lens for K1. Color rendition is great, small size, light weight and works well with my Nisi filter system. It just doesn't make sense to me people spends premium price on similar items on other brands. Go Pentax !

B h photo.34921152
26 August 2017

I wanted a digital zoom lens for my new K-1, having only older FA limited lenses and not wanting to shell out almost the same amount as I did on the camera. It focuses very quiet and fast, it takes good pictures outdoors, as stated buy another review, get the DA F 24-70 f2.8 if you plan to do any...

B h photo.34921152
7 August 2017

Whether you're using it on a current APS-C Pentax or the new full frame K-1, you'll find the Pentax 28-105 to be very satisfying across the range, corner to corner and dead center. It's surely one of the better 28-105 lenses that have been produced over the years and miles ahead compared to most kit...

13 June 2017

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.

B h photo.34921152
1 June 2017

I use this product on a Pentax k1

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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