Sigma 24-70mm f/2.8 EX DG Macro DF Autofocus Lens for Pentax AF
The Sigma 24-70mm f/2.8 EX DG Macro DF lens has now been optimized to capture superior quality images even with digital cameras. DG is a designation Sigma uses on lenses featuring optical systems designed to meet the performance characteristics of digital SLR cameras.
Responding to demands from professional photographers for a constant aperture zoom lens with a wider view, this lens covers focal lengths from 24mm ultra wide angle to 70mm medium telephoto with a bright viewfinder and easy AF/MF all the way through.
- Three aspherical lens elements minimize spherical aberration and astigmatism.
- Use of two SLD (Special Low Dispersion) elements results in excellent correction of chromatic aberration (the propensity of different colors of light to focus before and after the film plane).
- A DF (dual focus) mechanism is incorporated, making it easy to hold the lens during AF while providing a wide focus ring for easy manual focus.
- A non-rotating lens front allows the use of a flower-shaped "Perfect Hood" and makes employing polarizing filters a snap.
Go To
| Performance | |
|---|---|
| Focal Length | 24 - 70 mm |
| Aperture |
Maximum: f/2.8 Minimum: f/32 |
| Camera Mount Type | Pentax K |
| Format Compatibility |
35mm Film / Full-Frame Digital Sensor Pentax Digital (APS-C) |
| Angle of View | 84.1° - 34.3° |
| Minimum Focus Distance | 1.31' (40 cm) |
| Magnification | 0.28x |
| Maximum Reproduction Ratio | 1:3.8 |
| Groups/Elements | 13/14 |
| Diaphragm Blades | 9 |
| Features | |
|---|---|
| Image Stabilization | No |
| Autofocus | Yes |
| Tripod Collar | No |
| Physical | |
|---|---|
| Filter Thread | 82 mm |
| Dimensions (DxL) | Approx. 3.5 x 4.5" (8.89 x 11.43 cm) |
| Weight | 1.54 lb (700 g) |
REVIEW SNAPSHOT®
by PowerReviews(based on 8 reviews)
Ratings Distribution
100%
of respondents would recommend this to a friend.
Pros
- Durable (5)
- Fast / accurate auto-focus (5)
- Rugged (4)
- Strong construction (4)
Cons
- Heavy (3)
Best Uses
- Landscape/scenery (4)
- Low light (3)
- Portraits (3)
- Sports/action (3)
- Weddings (3)
- Reviewer Profile:
- Photo enthusiast (3)
REVIEWS
Reviewed by 8 customers
Sort by
Displaying reviews 1-8
Pros
- Consistent Output
- Fast / accurate auto-focus
- Nice Bokeh
Cons
- Heavy
Best Uses
- Indoors/Low Light
- Landscape/Scenery
- Sports/Action
- Weddings/Events
Comments about Sigma 24-70mm f/2.8 EX DG Macro DF Autofocus Lens for Pentax AF:
Great quality of the pictures, fast and acurate. it is slightly large and heavy but well worth it after you see the results. works great with both k7 and k5
- Was this a gift?:
- No
Pros
- Durable
- Easily Interchangeable
- Fast / accurate auto-focus
- Nice Bokeh
- Rugged
- Strong Construction
Cons
- A little soft wide open
Best Uses
- Indoors/Low Light
- Landscape/Scenery
Comments about Sigma 24-70mm f/2.8 EX DG Macro DF Autofocus Lens for Pentax AF:
This lens is very nice. At 2.8 it is a little soft but at anything higher it's awesome! Its fast. It's solid. I have only shot about 100 pics since I got it but so far I am quite pleased.
- Was this a gift?:
- No
Pros
- Durable
- Fast / accurate auto-focus
- Good in low light
- Rugged
- Sharp
- Solid feel
- Strong Construction
Cons
Best Uses
- Indoors/Low Light
- Landscape/Scenery
- Portraits
- Weddings/Events
- Wildlife Photos
Comments about Sigma 24-70mm f/2.8 EX DG Macro DF Autofocus Lens for Pentax AF:
This is an excellent lens and has become my favorite all-around shooter. I keep it mounted to my 7D at all times unless the shot calls for something else specific. Shots are sharp and build is great. Others find this lens to be heavy however I have always loved the weight and feel of my Sigma lenses. The 2.8 through helps in lower light situations and the versatile 24-70mm is perfect if you need to pull your camera out and grab a shot FAST. The Sigma 24-70 also has a very quick and accurate focus. Smooth and quiet. The only negative thing I can say about this lens is that the zoom seems to be tighter close to the 70mm end. May be something that will smooth over use. If you're looking for a great affordable all around zoom, look no further. Buy this lens.
Pros
- Consistent Output
- Durable
- Rugged
- Sharp Focus
- Strong Construction
Cons
- 82mm Filter Size
- Heavy
- Lens Creep
Best Uses
- Landscape/Scenery
- Night Photography
- Portraits
- Sports/Action
- Travel
- Weddings/Events
Comments about Sigma 24-70mm f/2.8 EX DG Macro DF Autofocus Lens for Pentax AF:
I am very pleased with this lens. I have it attached to my Pentax K20D, and don't see it coming off anytime soon. This lens produces consistently sharp pictures throughout the range (slightly soft wide open, but not enough to really mention). The lens also produces nice vibrant color with a nice level of contrast.
The size of this thing is somewhat of a shocker. It is big and it is heavy. I love the build.
I do notice that the zoom action get somewhat stiff at around 28mm as mention by some other reviews I have come across, but not to the point that I feel it needs to be sent in for repair.
My biggest and really only complaint is the mammoth 82mm filter size. Not at all common, and very expensive. Chances are you won't have any other lenses that the filters will fit.
Pros
- Durable
- Easily Interchangeable
- Quick Focus
- Rugged
- Strong Construction
Cons
- Blurry Focus
Best Uses
- General Use
- Sports/Action
Comments about Sigma 24-70mm f/2.8 EX DG Macro DF Autofocus Lens for Pentax AF:
I have had this lens for about 2 months now.
So far i'm pretty happy with it. I use it mostly for snowboard photography and for general use. I wish it were a little sharper though. Once you get the focus right its pretty good. But i've had some problems with the AF. Overall i think it's a good lens for the price.
Comments about Sigma 24-70mm f/2.8 EX DG Macro DF Autofocus Lens for Pentax AF:
Great lens! This is a definite keeper. Really sharp at F8. Perfect focal length.
The 82mm thread is just for the thread mainly. The actual glass between the thread is no that big, definitely NOT 82mm worth of glass. The glass is about the same diameter as the Sigma 18-50 f2.8 lens.
The lens is big but not that heavy. Good minimum focusing distance. Now here is the truth on the zoom ring issue:
Is it stiff? Yes. Coming back from 24mm going back toward 70, it gets stiff around 33mm or so. But so does the Tamron 28-75.
The zoom ring is also a little awkwardly placed. The manual focus ring is larger and intuitively, you'll grab that thinking it's the zoom ring but it's not. The zoom ring is further behind and it's very close to the lens mount. A little awkward to grab underhanded, with your fingers on the bottom of the lens but it's doable. I zoom overhanded with my four fingers from the top of the lens instead.
Those quirks aside, it's really nice glass. Price is nice for what you get. Focal length can be used for a lot of things. Don't want to take a star away from it because of the odd zoom ring quirks but they're there and you'll find out. You'll get used to them though. Good buy! It's really a 5 star lens in disguise.
- Recommended:
- General Brand 82mm UV Protector Filter - Glass
- Similar:
- Sigma 18-50 f2.8, Tamron 28-75 f2.8 for Canon
Pros
- Image quality
Cons
- The pound
Best Uses
- Inside when litgh missin
Comments about Sigma 24-70mm f/2.8 EX DG Macro DF Autofocus Lens for Pentax AF:
the lense's range is very usefull in the inside for close portrait or group.it make the job for the maximum apeterture to minimal. The quality of image is very good. A great lense
Pros
- Durable
- Good range
- Good Value
Cons
- Heavy
Best Uses
- Portraits
- Walkout
Comments about Sigma 24-70mm f/2.8 EX DG Macro DF Autofocus Lens for Pentax AF:
This is a nice lens to use but does require a learning curve to discover the best aperture for the best result. I found f9 works best and provides the sharpest images but the down side is the weight when its hand held with a slower shutter. Even with shake reduction, how you hold the camera is critical to a good image. Overall, the Sigma is a good lens and I am happy with the range and results I am getting. Found it useful with a external flash at a recent wedding for wider shots and portraits as well. Again, this requires a steep learning curve to get the best out of the lens.
Displaying reviews 1-8
Filters & Filter Kits
- Price: $48.00
- Price: $102.00
Hoods & Covers
- Price: $39.95
Cases & Wraps
-
- Original: $16.95
- Save: $1.69
- Price: $15.26
What's in the Box
- Front & Rear Lens Caps
- Hood
- Soft Case
- 1-Year Worldwide Warranty + 3-Year Extended USA Warranty
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