Pentax SMC Pentax DA 50-200mm f/4-5.6 ED WR Zoom Lens

Model #21870

USA Version
Pentax 21870 1
Pentax 21870 1
Pentax 21870 2
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Filter thread 49 mm
Weight 10.1 oz (286 g)
Dimensions (dxl) Approx. 2.7 x 3.1" (6.86 x 7.87 cm)


Diaphragm blades 6
Focal length 50 - 200 mm
Comparable APS-C Focal Length: 76.5 - 307 mm
Minimum focus distance 3.60' (1.10 m)
Magnification 0.24x
Maximum reproduction ratio 1:4.16
Angle of view 31.5° - 8.1°
Camera mount type Pentax K
Format compatibility Pentax Digital (APS-C)
Aperture Maximum: f/4.5 - 5.6
Minimum: f/22 - 32
Groups/elements 10/11


Tripod collar No
Autofocus Yes
Image stabilization No
User Reviews
B h photo.34921152
20 July 2015

This lens works very nicely when shooting wildlife with a Pentax K-50. I am amazed how well very tightly cropped photos hold up with this combination. Autofocus is sometimes an issue in some situations for me, but I am able to switch easily to manual focus to get the shot. I normally shoot RAW+jpeg.

20 April 2017

I would give this item a better review if it was actually the item pictured and in the discription. It was a DAL lens (lesser quality w/o the quick shift focus) and not a DA lens. It would of been one thing if it was actually that was actually the item in the description (see attached photo).

16 February 2015

Pentax 50-200mm f/4-5.6 ED WR Telephoto Zoom Lens is a typical kit len for Pentax K-mount DSLR products, it includes a len hood which is great for the bright light outdoor photo shooting. In addition, it is with metal mount apart from DAL lens from Pentax which is constructed with plastic mount.

25 June 2018

Love the lens for my Pentax K5 and a good price

5 April 2018

Just like other reviews DAL verision which is the cheap kit lens. I was hoping for better

14 September 2017

Didn't work and came poorly packaged for a lens.

B h photo.34921152
5 August 2017

This lens works fine in good lighting and yeilds great pictures for those who know how to use it within its limitations. Don't expect to pay this price point and get the results of a fixed f/ wont.

3 August 2017

I opine: I found it an excellent lens. Eg: by sight a trawler at sea appeared to have no crew on deck but with this zoom lens attached I could pick out the head and shoulders, clearly though not facial features at about 300 yards; the lens being weather resistant, I have used it in light rain...

25 May 2017

Nice lens, lightweight, nice addition.

B h photo.34921152
9 November 2016

Solid lens, as usual, I didn't expect anything less from Pentax. It has a good zoom range and it feels solid in my hands. WR is a definite plus, as the lens is best used outdoors.

Product Highlights
  • For Use in Pentax Digital SLR Cameras With KAF-mounts.
In The Box
  • Pentax SMC Pentax DA 50-200mm f/4-5.6 ED WR Zoom Lens
  • Lens Hood (PH-RBD49)
  • 49mm Front Lens Cap (31526)
  • Rear Lens Cap B
  • 1-Year Manufacturers Warranty
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