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.32817553
27 July 2016

It arrived intact and seems to perform well with the K1. The zoom is a little stiff, but that's better than too loose. I don't notice any drop off in the corners and it focuses quickly. This will be a work horse for me.

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.32817553
27 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.32817553
1 June 2017

I use this product on a Pentax k1

25 April 2017

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

B h photo.32817553
6 April 2017

This lens is sharp and fast. It's very impressed. I use my Pentax K-1 with 28-105mm. This lens is made for the full frame K-1.I'm still enjoying this lens and have produced many excellent images with it already.

B h photo.32817553
17 February 2017

As others have said, this is a great walk-around lens to have on your camera. It's very easy to use, easy to carry and focuses quickly and quietly. When it comes to sharpness, however, the images it produces are a little soft; that's is the only issue keeping me from giving this 5 stars.

16 February 2017

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.

4 January 2017

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

31 December 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.

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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