17-50mm f/2.8 XR Di-II LD Aspherical [IF] Autofocus Lens for Pentax Digital Cameras

Model #AF016P-700

USA Version
Tamron af016p 700 1
Tamron af016p 700 1
Tamron af016p 700 5
Tamron af016p 700 2
Tamron af016p 700 3
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Expert Reviews
The digital picture.34755376
18 August 2016

The Tamron 17-50mm f/2.8 XR Di II Lens delivers very good image quality in a small , light , fast and affordable package. Add in the very popular focal length range and you have a lens that is just right for many digital SLR camera owners.

What digital camera.32818507
1 May 2010

Designed for APS-C cameras but with a pro-spec build quality, this sub-£500 optic is a good update to an already popular lens

  • +

    Fast aperture

  • -

    Non-internal focusing

1 August 2010

The new Tamron SP AF17-50mm F/2.8 XR Di II VC LD Aspherical (IF) joins a growing community of wide-zoom lenses. In contrast to an earlier version of this lens, which is available in several mounts, this APS-C Tamron optic (designated Model B005/$649 street price) is only available in Nikon DX (with...

Slr lens and camera reviews.33034498
3 June 2009

Putting aside such glaring issues as build quality, noisy and slow AF, Tamron SP AF 17-50mm f/2.8 XR Di II LD ASPH IF is capable of producing pretty good results. Unfortunately, the performance is rather inconsistent across the zoom and aperture ranges.

10 October 2008

With the exception of the distortion at the wide end, this is a very competent lens and a considerable jump up from the general standard of kit lens that it would replace. There is little else that lets it down and good resolution across the frame that is acceptable even when the lens is used wide...

  • +

    Good resolution and control of CA, Nice build, an improvement for Tamron, Consistent through the focal range

  • -

    Distortion at the wide end., No supplied case or pouch.

Bob atkins.32834441
25 February 2010

A hood (petal style) which mounts on the lens using a bayonet fitting is supplied with the lens. The front of the lens is threaded for 72mm diameter filters and the lens cap is a "center squeeze" design which makes it easier to remove and replace with the lens hood mounted.

Pop photo.32824722
16 December 2008

DSLR photographers looking to move up from the distortion and limited sharpness and speed of their kit lens will welcome this new wide-to-medium tele. Tamron has toted out big-gun technology for its 26-78mm equivalent ($450, street).

Techradar uk.32817471
25 July 2011

Outperforms similarly priced lenses, but quality control could be an issue

6 December 2009

Because of the increasing popularity of digital SLR cameras, Tamron has been upgrading their line of lenses to the "Digitally integrated" (Di) standard, employing methods discussed in our Technology sidebar.

Photozone de.34752480
5 July 2009

The Tamron AF 17-50mm f/2.8 SP XR Di II LD Aspherical [IF] is a very serious performer capable to deliver very sharp images at all focal lengths. Vignetting and distortion are about average for a lens in this class. CAs are a bit on the high side towards the short end of the focal range.

User Reviews
12 June 2016

It's a great lens, tends be be my "go to" for every day and even portrait photography. Clear images, quick focus, if you're looking for a day to day, especially good in low light lens, this is the one.

18 June 2014

I purchased this lens 2 months ago and was very excited to receive it. Unfortunately my excitement was short lived as this lens was mediocre at best. Don't get me wrong, it was an upgrade over the Sony 18-55 kit lens but I had a hard time warranting the $400 price tag for what I was receiving...

Photography review.34752477
8 January 2011

When I first started searching for a wide angle multipurpose zoom lens, I shortlisted Canon 18-200mm IS, Canon 18-55mm IS, Canon 17-50mm F2.8 USM, Sigma 17-50mm F2.8 & Tamron 17-50mm F2.8. I read various expert reviews, user reviews and lens comparisons on the internet.

  • +

    Sharp photos in good light conditions, excellent wide angle outdoor shots

  • -

    At f2.8 / 17mm photos are not sharp, difficult to focus in low light conditions

19 December 2015

The lens was just what I wanted. Works well.

6 December 2014

I wanted an upgrade from the Canon 17-85 lens, but I also wanted a lens that worked well in low light. I read reviews after reviews of lens and decided upon the Tamron 17-50 2.8 partly due to the cost but also because of the photos I had seen being posted by current users.

  • +

    Consistent Output, Durable, Easily Interchangeable, Lightweight, Quick Focus, Rugged, Sharp Focus, Strong Construction

19 July 2014

Just about on a par with my Olympus which says a lot for Tamron

  • +

    Sharp Focus

  • -


1 June 2014

The product is great because it has a very wide aperture for a zoom lens, without breaking the budget! It's also a constant f/2.8, so you have great aperture even when fully zoomed in.

11 May 2014

It is heavy works ok but is made cheaply and doesnt auto focus all the time the inner electronics must be crap

30 April 2014

Positives: Fast f2.8 through the whole zoom range Lens has good contrast Actually, that's it Negatives Optical resolution is fairly poor, especially at 50mm end Autofocus is LOUD Autofocus is SLOWER than the kit lens!

26 March 2014

This lens doing what I expect from it. My T3 will last longer with this quality lens. Well top notch

Product Highlights
  • Zoom Super Wide Angle
Average Expert Score
Average User Score
In The Box
  • Tamron 17-50mm f/2.8 XR Di-II LD Aspherical [IF] Autofocus Lens for Pentax Digital Cameras
  • 67mm Snap-On Lens Cap
  • Rear Lens Cap for Pentax AF
  • RHAF09 Lens Hood for 28-75mm f/2.8 & 17-50mm f/2.8 (non-VC) Lens
  • 6-Year Warranty
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