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Pentax SMC DA* Series 16-50mm f/2.8 ED AL IF SDM Wide Angle Zoom Lens for Pentax Digital SLR Cameras | 
 enlarge | Brand: Pentax
Category: Photography
List Price: $1,202.05
Buy New: $639.99
You Save: $562.06 (47%)
New (18) Used (3)
Avg. Customer Rating:  17 reviews
Media: Electronics
Autographed: No
Memorabilia: No
Fragile: No
Batteries Included: No
Optical Zoom: 3.1
Maximum Focal Length: 50
Minimum Focal Length: 16
Shipping Weight (lbs): 1.3
Dimensions (in): 3.9 x 3.3 x 3.3
MPN: 21650
Model: 21650
UPC: 027075129252
EAN: 0027075129252
ASIN: B000NO5QV6
Release Date: August 15, 2007
Availability: Usually ships in 1-2 business days
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| Features:
| • | smc DA 16-50mm F2.8 ED/AL (IF) Lens, Lens Cap, Rear Lens Cap B (31006), Lens Hood, Lens Soft Case | | • | High performance, wide angle zoom lens | | • | SDM system creates smoother, quieter auto focus | | • | Weather resistant and dust resistant body | | • | Quick-shift Focus System for instant switching from auto focus to manual |
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| Editorial Reviews:
Product Description
The PENTAX DA * 16-50mm F2.8 ED/AL (IF) wide angle zoom lens is designed for exclusive use with PENTAX digital SLR cameras and delivers the highest level of ultimate optical image quality. With aspherical elements, special optical-glass elements and original lens coatings, this lens is superior in terms of contrast, clarity and edge-to-edge sharpness. The 16-50mm features tightly sealed, weather-resistant and dust-resistant construction to enhance durability for use in rain or dusty conditions. It also features the PENTAX-original Quick-Shift Focus System for instant switching to manual-focus operation and PENTAX-original SP (Super Protect) coating to repel dust, water and grease. A new SDM system has been incorporated for smoother, quieter autofocusing operation using a built-in supersonic motor. Pentax SP coating protects the exposed lens elements Two ED elements and 3 aspherical elements compensate for chromatic and spherical aberration Developed specifically for Pentax digital SLR's Focal length equivalent to 24.5mm to 76.5mm in the 35mm format Accepts 77mm Filter Unit Dimensions (diameter x length) - 3.3 x 3.9 (84mm x 98.5mm); Weight - 19.9 oz. (565g) without hood; 21.2 oz. (600g) with hood
Amazon.com Product Description
Designed for exclusive use with Pentax digital SLR cameras, the Pentax DA* 16-50mm f/2.8 wide-angle zoom lens is a terrific choice for landscapes, portraiture, and just about any other application. The lens features a tightly sealed, weather-resistant and dust-resistant construction to enhance durability in rainy or dusty conditions. The lens's three aspherical elements and two special optical glass elements, meanwhile, help compensate for chromatic and spherical aberration, producing images with superior contrast, clarity, and edge-to-edge sharpness. And thanks to the lens's Pentax-original Quick-Shift Focus System, you can easily and instantly switch from autofocus to manual focus. Specifications
- Focal length: 16-50mm
- Maximum aperture: f/2.8
- Minimum aperture: f/22
- Lens construction: 15 elements in 12 groups
- Angle of view: 83 to 31.5 degrees (when used with Pentax digital SLR camera body)
- Number of diaphragm blades: 9
- Metering system: TTL open-aperture metering
- Minimum focusing distance: 0.3 meters
- Maximum magnification: 0.21x
- Filter size: 77mm
- Corresponding AF mounts: Pentax KAF2
- Dimensions: 3.3 inches in diameter and 3.9 inches long
- Weight: 19.9 ounces (without hood)
- Warranty: 1 year
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| Customer Reviews: Read 12 more reviews...
 Great Lens November 3, 2008
Super Sharp, Super fast focus. It takes a little getting used to the super quiet focus mechanism though. A must for wedding photographers.
Fantastic lens!!! November 1, 2008
This is very very nice lens!
I was little bit hesitant to buy it mainly because of the QC problem
However I'm so happy to get this one and want to encourage anyone to try it.
For this price tag of $650, this is a steal.
Very very sharp lens at the price of Nikon or Canon bundle.
Just get it, you will never gonna lose it.
Fantastic for the travel/outdoor photographer September 23, 2008
Had this lens for a good 3 months now with the K20D and could not be happier!
The build quality is excellent, and it's a real bargain for the price! I used it in pouring rain at my trips to the islands, beaches, and mountains without problems! I sure love the weathersealing of this lens!
Focusing is virtually silent. I literally had to stick my ear to it to check if it was working haha. It could be faster though. Not as fast as the AF-S and USM.
Very sharp and good contrast wide open! No hesitation shooting wide open for sharpness and contrast. The bokeh isn't SUPER buttery smooth, a bit "busier" than I would like but happy with it. I can't compare the bokeh to the fast primes. There's a teeny bit of vignette wide open but I actually love vignettes.
I really like that it has a little window in the lens hood for filters. Very thoughtful and it's great for CPLs.
The zoom ring has a good feel, smooth and dampened. The feel of the zoom ring is about 4/5 for me, as it could be just a teeny bit smoother. The focusing ring isn't dampened much but very smooth. It doesn't have much travel though, which I would have liked for manual focusing. The manual focusing override is very convenient.
Be a bit careful of the quality control. I'm not sure if it has been resolved but I was much happier with my second copy of this lens.
All in all, a great purchase! Great product, great value and a great bargain/price!
Solid Performer August 28, 2008
Excellent image quality across the entire zoom and aperture range that lives up to the DA* designation. The f/2.8 shutter speed provides for shooting in lower light conditions. Attached to the Pentax K20D, it results in very fast and very quiet focusing, and good color and sharpness characteristics. Only drawback is that this lens is a bit bulky (77 mm diameter opening)and heavy.
Looks and feels solid. Nice bokeh. Wish it had faster AF and better QC. August 21, 2008
5 out of 5 found this review helpful
This lens looks great and feels very solid. Taking into account the professional specs and the price of the lens, it seems to be a real bargain. Well, it is almost true... but not exactly so.
But firstly, the positive:
- Image quality is very good, especially when stepping down by at least one f/stop
- It has good bokeh
- Works with the old "screwdriver" bodies, as well as has SDM
Now, the negatives:
- The quality of this lens is very inconsistent. I knew about this before buying my copy, so it did not come as a surprise when I discovered that my lens was a bit "off". In my case one corner is slightly softer than the rest of the image, but it is only noticeable on test shots wide open and is not field relevant. So I decided to keep it and not to go into a gamble with exchange for another copy.
- You may have a strange effect when this lens is focusing spot on in the daylight and is a complete disaster in incandecent or lower light situations. You may even experience this problem to some extent in all light conditions, depending on you copy of the lens. This happens sometimes with my lens set at 16 mm zoom position. My lens shows in some cases FF, and in some - BF, which may be a problem when shooting at large apertures. My SMCP 35 f/2.0, 77 f/1.8 or 50 f/1.4 do not have this problem on my both cameras (K10D and *ist DS), so I explain this phenomena by lens behavior.
- The focusing is quite slow - both with SDM and with the screwdriver. This is not what you would expect from the professional-grade lens. Perhaps this is a price to pay for supporting the SDM-enabled and the legacy "screwdriver" bodies in one lens.
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