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Sigma 17-70mm f/2.8-4 DC Macro HSM Contemporary Lens for Pentax K

BH #SI1770284DCP • MFR #884109
25 reviews
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Sigma 17-70mm f/2.8-4 DC Macro HSM Contemporary Lens for Pentax K
Key Features
  • K-Mount Lens/APS-C Format
  • 25.5-105mm (35mm Equivalent)
  • Aperture Range: f/2.8 to f/22
  • Two FLD Elements, One SLD Element
Mixing a useful zoom range with a sophisticated design, the Pentax K-mount Sigma 17-70mm f/2.8-4 DC Macro HSM is a Contemporary-series lens, also characterized by its compact, lightweight profile. The bright f/2.8-4 maximum aperture range pairs with the wide-angle to short-telephoto zoom range to create an ideal travel and everyday lens. The optical design uses a series of low dispersion and aspherical elements to control color fringing and distortion in order to realize high clarity and sharpness. A Super Multi-Layer Coating has also been applied to suppress flare and surface reflections for improved contrast in bright conditions. Also, this zoom sports a high 1:2.8 maximum magnification and 8.7" minimum focusing distance to suit working with close-up subjects.
More Details
No Longer Available
Used for$358.95
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Sigma 17-70mm f/2.8-4 DC Macro HSM Contempora... Overview

Mixing a useful zoom range with a sophisticated design, the Pentax K-mount Sigma 17-70mm f/2.8-4 DC Macro HSM is a Contemporary-series lens, also characterized by its compact, lightweight profile. The bright f/2.8-4 maximum aperture range pairs with the wide-angle to short-telephoto zoom range to create an ideal travel and everyday lens. The optical design uses a series of low dispersion and aspherical elements to control color fringing and distortion in order to realize high clarity and sharpness. A Super Multi-Layer Coating has also been applied to suppress flare and surface reflections for improved contrast in bright conditions. Also, this zoom sports a high 1:2.8 maximum magnification and 8.7" minimum focusing distance to suit working with close-up subjects.

In terms of handling, a Hyper Sonic Motor is incorporated in the design to provide fast, quiet, and precise autofocus performance along with full-time manual focus override. Additionally, the 17-70mm f/2.8-4 features a rounded seven-blade diaphragm for smooth bokeh quality and it is compatible with the optional USB Dock for fine-tuning focusing characteristics and updating its firmware.

As part of the Contemporary line within Sigma's Global Vision series, this lens is designed to achieve a balance between convenience and performance, and meshes a compact, lightweight build and versatile handling with notable optical attributes.
Wide-angle to short-telephoto zoom is designed for APS-C-format Pentax K-mount cameras and provides a 25.5-105mm equivalent focal length range.
Bright f/2.8-4 maximum aperture range is suitable for working in available light conditions and also benefits depth of field control for isolating subject matter.
One Special Low Dispersion (SLD) and two F Low Dispersion (FLD) elements are featured in the optical design and help to reduce color fringing and chromatic aberrations for improved clarity and color accuracy.
Three aspherical elements are used to help limit distortion and spherical aberrations and also contribute to greater overall sharpness and accurate rendering.
A Super Multi-Layer Coating has been applied to lens elements in order to minimize lens flare and ghosting and contribute to producing contrast-rich and color-neutral imagery, even in backlit conditions.
Ideal for close-up shooting, this lens offers a 1:2.8 maximum magnification along with a minimum focusing distance of 8.7" to suit working with nearby subjects.
Integrated HSM (Hyper Sonic Motor), along with a rear focus system, realizes quick and quiet autofocus, which is further complemented by an optimized AF algorithm to produce smoother focusing performance. The HSM also permits full-time manual focus control simply by rotating the focus ring at any time.
Rounded seven-blade diaphragm contributes to a smooth and pleasing bokeh quality.
Constructed using a Thermally Stable Composite (TSC) material for greater precision and use in wide temperature variations. Additionally, a brass bayonet affords improved mounting accuracy and rigidity.
This lens is compatible with the optional Sigma USB Dock for fine-tuning different lens characteristics and updating its firmware.

Sigma 17-70mm f/2.8-4 DC Macro HSM Contempora...Specs

Key Specs
Focal Length
17 to 70mm (35mm Equivalent: 25.5 to 105mm)
Maximum Aperture
f/2.8 to 4
Lens Mount
Pentax K
Lens Format Coverage
APS-C
Focus Type
Autofocus
Image Stabilization
No
Filter Size
72 mm (Front)
Maximum Aperture
f/2.8 to 4
Minimum Aperture
f/22
Lens Mount
Pentax K
Lens Format Coverage
APS-C
Angle of View
79.7° to 22.9°
Minimum Focus Distance
8.66" / 22 cm
Maximum Magnification
0.36x
Macro Reproduction Ratio
1:2.8
Optical Design
16 Elements in 14 Groups
Diaphragm Blades
7, Rounded
Focus Type
Autofocus
Image Stabilization
No
Filter Size
72 mm (Front)
Dimensions (ø x L)
3.11 x 3.23" / 79 x 82 mm
Weight
1.02 lb / 465 g
Packaging Info
Package Weight
1.395 lb
Box Dimensions (LxWxH)
5.95 x 4.3 x 4.3"

Sigma 17-70mm f/2.8-4 DC Macro HSM Contempora... Reviews

Good product

By Lucas
Rated 5 out of 5
Date: 2019-06-30

Good product

Great walk around lens

By Tim
Rated 5 out of 5
Date: 2018-01-26

I bought this lens to replace my beloved Konica Minolta 28-70 f2.8 that was starting to show it's age.� It's been a real joy to shot with.� Smooth, fast focusing.� It's lightweight and compact.� And, it's been tack sharp.� �It goes with me on almost every assignment these days.

Disappointing

By Cenk Ataseven
Rated 2 out of 5
Date: 2017-03-09

Not sharp, not good colors. my copy was showing reds as pink in high light.

For amateurs

By Loli
Rated 2 out of 5
Date: 2016-07-28

Its not a good lens, super basic and unprofessional. It says it opens to 2.8 but that's a complete lie.

Sigma 17-70mm F/2.8-4 DC HSM C

By Winny
Rated 3 out of 5
Date: 2016-03-09

Sharpness, color, macro, these are all nice. Mine has an issue with flare and ghosting. Sent it back to Sigma on warranty, but they did'nt find anything wrong, so I have the same issues.For the price I payed, I should have stayed with the kit lens and buy the 55-300mm wr lens.It was $$ in canadian $, not cheap for that kind of problem. So i'm rather disappointed, because sometimes you miss shots for no reason, because the kit lens has no flare issue.Have a nice day.

very sharp !

By Brian
Rated 5 out of 5
Date: 2015-11-01

with indoor tests,the sigma seems as sharp as my pentax 16-85,better than my 18-135.Have not had a chance to use it outdoors much,hope its as good with in real situations.

Great Results

By Erwin
Rated 5 out of 5
Date: 2018-10-22

Highly versatile and well made, I have had excellent results. Excellent value besides.

Adds versatility to my lens

By Lowell
Rated 5 out of 5
Date: 2018-10-03

Have only had a couple of times, but fills a gap in my coveragearea. Is sharp and makes fine shots.

See any errors on this page? Let us know

question

Hi does the filter mounting thread rotate? If if doesn't it will be graet for a polarising filter
Asked by: Anonymous
No it does not. You may use a circular polarizer on this lens without any issue.
Answered by: Yos O.
Date published: 2018-08-28

question

How well this lens will perform on the Pentax K3?
Asked by: Anonymous
This lens will perform wonderfully on the Pentax K3 camera. The lens is fully compatible with it.
Answered by: Yos O.
Date published: 2018-08-28

question

What does the OS setting do. I thought that OS was not available on the Pentax lens, but the switch is prominently there, unless the switch has no function. Also, I have an AF switch on the camera (Pentax K-x) and there is an AF switch on the lens. Do they both have to be on to have auto focus? What happens if one of the switches is on manual focus and the other is on auto focus, will this cause damage?
Asked by: Anonymous
The Sigma 17-70mm f/2.8-4 DC Macro HSM Lens For Pentax does not have OS. Nor would there be an OS button on the lens. The images on our site are for illustrative purposes only, and it appears we are using a photo of one of the Nikon or Canon mount lenses for all of the other mounts (hence the OS in the photo). We apologize for any confusion this might cause. As for the AF switches, both the switch on the camera and lens would need to be switched to AF in order for AF to function. If one of the switches is on M, then autofocus will not function.
Answered by: Christina S.
Date published: 2019-08-05

question

Will this lens work on the Pentax K-200?
Asked by: Anonymous
The Sigma 17-70mm f/2.8 lens for Pentax is fully compatible with the Pentax K200D.
Answered by: Christina S.
Date published: 2018-08-28

question

Buenas noches, este lente le sirve a una Canon 750D??
Asked by: Angela M.
Puede usar este objetivo en una cmara EF-S como la Canon 750D. Necesitars este adaptador. Vello Pentax K Lente a Canon EF-S-Mount Adaptador de lente para cmara B & H # VELACEFPK. Sin embargo, esto no es ideal ya que no puede ajustar la apertura (que ser la parada ms lenta) y el enfoque es solo manual. Le recomendamos que obtenga la lente Sigma 17-70mm f / 2.8-4 DC Macro OS HSM para Canon B & H # SI1770284DCC en su lugar.
Answered by: Dennis A L.
Date published: 2018-08-28

question

Does this lens work on a Pentax K1?
Asked by: Nicholas B.
This lens can work on a Pentax K1, but since the lens is for an APS-C format Pentax DSLR, you will lose resolution and the image will crop on the K1.
Answered by: Kirk R.
Date published: 2018-08-28

question

If I buy this lens now does it have the new firmware on it? I heard there was a problem with the lens and the Pentax image stabilizations system. I read a firmware update was necessary for this lens.
Asked by: David
The firmware update David D. is referring to is not for the camera, but for the Sigma lens itself. A compatibility problem was discovered earlier this year by members of the 'Pentax Forums' website wherein the focal length setting on the lens was not being delivered to the camera correctly, causing image stabilization errors with the camera's built-in camera shake feature. The result was images being more blurry when shake reduction was turned on (instead of less blurry). Sigma addressed the issue immediately upon being made aware of the problem -- to their great credit -- and corrected the problem via a firmware update (again, for the lens, not the camera). This firmware update needed for some versions of this lens can either be done by Sigma or via the Sigma USB Lens Dock they have available.B&H were made aware of the problem at the same time (Jan. 2015) via the 'Ask B&H Photo' section of the 'Pentax Forums' website by yours truly, but they were unable -- or unwilling -- to contribute anything to fixing the stock they had/have on-hand. Whether or not the current stock of Sigma 17-70mm lenses for Pentax that B&H currently has on-hand already have the updated firmware is a question only they can answer.
Answered by: Randy D.
Date published: 2020-06-22

question

Hi, This lens is compatible with Sony NEX 7 ? Thanks Tommy
Asked by: Anonymous
This lens will be compatible with a Sony NEX-7 only with the use of an adapter for Alpha mount to NEX E-mount: http://bhpho.to/1bKe4G1
Answered by: Heather S.
Date published: 2018-08-28
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