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

Model #21297

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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
Expert Reviews
28 July 2016

The HD Pentax-D FA 28-105mm F3.5-5.6 ED DC WR plays an important role in the Pentax full-frame zoom lineup. First and foremost, it's a compact yet versatile walkaround lens perfect for photographers who wish to travel light and still have access to a high-performance all-in-one lens.

  • +

    Consistent sharpness, Fast, silent autofocus, Light, compact, ergonomic, Well-controlled aberrations, Weather sealed, Quick Shift, Smooth bokeh, Good color rendition, Accurate exposure, Very pleasing bokeh, Versatile zoom range, Excellent value

  • -

    Prominent vignetting at wide apertures, Prone to flare in harsh light, Some exposure inconsistency wide-open at F4.5, Corner/edge distortion accompanied by fringing, Focus ring design hampers precise manual adjustments, No distance scale, Soft corners at 28mm wide-open, and 105mm

7 July 2016

The new 35mm-format or “full frame” Pentax K-1 is now with us, and here we have the HD Pentax-D FA 28-105mm f/3.5-5.6 ED DC WR standard zoom to go with it. This is the least expensive of the kit options and also the lightest and most compact of the initial batch of full frame zoom lenses.

User Reviews
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...

12 April 2018

This is a very good lens for traveling. The zoom range allows for both wide-angle panoramas and close-ups on the go. At f8 - f11 apertures the sharpness is more than decent so it's basically a day lens, although on a tripod by night or when using a ND filter it also delivers.

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...

14 February 2018

I bought this lens with the K-1 and have been very happy with the picture quality. Up until recently, kit lenses were of lower quality and people viewed them as good entry level purchases.

B h photo.34921152
27 December 2018

I bought this to use as a general purpose , walk around lens. It fits the bill perfectly. Great image as well as build quality. I was considering the 24 ~ 70. I am extremely happy with my choice . I use this lens with a Pentax K1-II.

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.

B h photo.34921152
7 June 2016

i was between dfa 24-70 and dfa 28-105. i tried both but finaly i went with dfa 28-105 for its versatill and of sure for the price. the lens is sharp even at 28 mm and very sharp at 70 mm. it is my walk around lens and for this reason it is on the camera all most the time.

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
1 August 2016

I use it for routine photo outings, hiking, and trekking. Lightweight & Weatherproof, so good for hiking and trekking. It could be wider at the lower end and longer at the upper end but considering the light weight it is a very nice lens to have. Much lighter than the better Pentax 24-70

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.

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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