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Tamron AF 17-50mm F/2.8 XR Di-II LD SP Aspherical (IF) Zoom Lens for Konica Minolta and Sony Digital SLR Cameras (Model A16M)
|Price:||$499.00 & FREE Shipping. Details|
- Sony / Minolta -compatible lens designed specifically for digital SLR's
- 17-50mm focal range equivalent to 26-78mm in 35mm format
- Maximum aperture of f2.8
- Filter diameter of 67mm
- Minimum focus distance of 0.27 meters over entire zoom range
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|Aperture Control Design||Aperture controlled by camera|
|Compatible Lens Hood Part Number||Flower-shaped hood|
|Included Components||Flower Shaped Lens Hood, Lens Caps|
|Item Dimensions||3.28 x 3.08 x 3.08 inches|
|Item Weight||0.97 pounds|
|Lens Type||Zoom lens|
|Maximum Focal Length||50 mm|
|Maximum Format Size||APS-C / DX|
|Minimum Focal Length||17 mm|
|Photo Filter Thread Size||67 mm|
|Shipping Weight||1.68 pounds|
|Style Name||Konica Minolta & Sony|
The Tamron SP AF17-50mm f/2.8 XR Di II LD Aspherical [IF] Autofocus Lens for Sony Alpha & Minolta is a lightweight, compact, fast standard zoom lens designed exclusively for digital SLR cameras. The focal length of this lens is equivalent to approx. 26-78mm in 35mm format.
This lens offers an f/2.8 maximum aperture throughout the entire zoom range, to ensure stress-free photographic shots at all focal lengths and distances. Additionally, a broader photographic expression through the use of faster shutter speeds as a result of the maximum aperture offers enhanced photographic pleasure.
Optimized for Digital SLR - The use of XR (Extra Refractive Index) glass optimizes the overall distribution of optical power, and also reduces various aberrations to the absolute minimum while achieving remarkable compactness. In addition, suitable positioning of two hybrid aspherical elements serves to maintain imaging performance and to shorten and compress the entire optical system.LD Glass - An LD (Low Dispersion) glass element is used to accomplish effective compensation of on-axis and lateral chromatic aberrations, a critical factor for enhancing optical quality in digital photography, in order to achieve outstanding optical performance over the entire zoom range.Enhanced Peripheral Illumination - Peripheral light fall-off is minimized when compared with that of conventional lenses for film cameras, so images are uniformly bright from the center to the periphery.Internal Surface Coating to Reduce Ghosting and Flare - By employing "Internal Surface Coatings" (i.e., multiple-layer coatings on cemented surfaces of plural elements) and multiple-layer coating technology on ordinary elements, ghosting and flare due to the reflections that occur when light enters through the front element and reflections caused by the imagers them
From the Manufacturer
The SP AF17-50mm F/2.8 is a lightweight, compact, fast standard zoom lens designed exclusively for digital SLR cameras, expanding the product concept of the popular SP AF28-75mm F/2.8 zoom lens. In addition, portrait shots are made beautiful with the natural out-of-focus effect characteristic provided by the fast F/2.8 aperture. Additionally, a broader photographic expression through the use of faster shutter speeds as a result of the maximum aperture offers enhanced photographic pleasure. The lens boasts one of the best close-up shooting performances in the class of fast standard zoom lenses designed exclusively for digital cameras and featuring an F/2.8 maximum aperture throughout the entire zoom range, to ensure stress-free photographic shots at all focal lengths and distances.
Lenses are designed for exclusive use on digital cameras with smaller-size imagers and inherit all of the benefits of our Di products. These lenses are not designed for conventional cameras and digital cameras with image sensors larger than 24mm x 16mm.
Extra Refractive Index Glass (XR)
Extra Refractive Index (XR) glass can bend light rays at steeper angles, thereby decreasing the physical length of the lens while enhancing imaging performance by minimizing optical aberrations. This has allowed Tamron to develop a line of shorter, smaller-diameter, lighter lenses without sacrificing lens speed, and actually upgrading image quality compared to older designs. XR glass is costlier than conventional glass but it yields enhanced optical power distribution, making possible many of the outstanding and innovative lens designs that bear the XR designation. XR glass, with its superior light-bending power, makes it possible to design a short-barrel lens with the same light-gathering ability (aperture value) as a long-barrel lens—even with a smaller lens diameter. By using this principle Tamron has been able to shorten the length of the entire optical system and produce lighter, more compact lenses of the same speed, and also to provide greater zoom ranges in lenses that are much more convenient to carry by hand.
Low dispersion (LD) glass elements in a lens help reduce chromatic aberration; the tendency of light of different colors to come to different points of focus at the image plane. Chromatic aberration reduces the sharpness of an image, but glass with an extremely lowdispersion index, has less of a tendency to separate (defract) a ray of light into a rainbow of colors. This characteristic allows the lens designer to effectively compensate for chromatic aberration at the center of the field (on axis), a particular problem at long focal lengths (the telephoto end of the zoom range), and for lateral chromatic aberration (towards the edges of the field) that often occurs at short focal lengths (the wide-angle end of the zoom range.)
Super Performance (SP) for Discriminating Shooters
Tamron SP (Super Performance) series is a line of ultra-high-performance lenses designed and manufactured to the exacting specifications demanded by professionals and others who require the highest possible image quality. In creating SP lenses Tamron’s optical designers put their foremost priority on achieving superior performance parameters—they are all designed to a higher standard with little regard for cost constraints. As a result, Tamron lenses bearing the SP designation feature impressive and innovative designs that have established an enviable reputation for excellence among those knowledgeable photographers that demand the very best.
Zoom Lock (ZL)
Another original Tamron mechanical engineering concept is the Zoom Lock (ZL), a simple convenience feature that prevents undesired extension of the lens barrel when carrying the camera/lens unit on a neck strap.
Style: Konica Minolta & Sony
Top Customer Reviews
-The Tamron is heavier and more sturdy than the Sony lens.
-It has better sharpness throughout the frame, but especially in the corners; it's slightly soft at f2.8 (though still better than the kit lens) and gets sharper as you stop it down.
-Using it for indoor or nighttime shooting is great compared to the kit lens.
-The aperture is 2.8 throughout the zoom range, meaning that you don't lose light when you zoom in towards 50mm.
-The macro works decently well, especially with the narrow depth of field you get with a big aperture.
-It doesn't go to 70mm like the kit lens, but I checked over my existing photos and barely used anything past 50mm anyways, plus you get 17mm vs. 18mm on the wide end.
-Weight takes a little getting used to, but in a good way.
-Not cheap, but not too expensive compared to similar lenses.
-Slight distortion on the wide (17mm) end, though again, it's not as bad as the kit lens and you don't really notice.
I would definitely buy this lens again and would recommend it to a friend. Definitely a very good and worthwhile upgrade to the SAL 18-70 kit lens.
I am an event and wedding photographer and first i was more keen to the Nikon 17-55mm f/2.8G but i did my research and even asked in a Wedding Photography group on Flickr and a friend of mine told me that he switched to tamron after he discover the performance was comparable to the three times more expensive lens made by Nikon.
You wont get the metal lens or the internal focusing that comes with the Nikkor one, but to be honest that does not matter that much in a lens this small, it comes out like a bit over an inch when you zoom in but i don't see why that would be a problem to anyone. I shoot events that last for hours and the lightweight is a plus.
I have taken over 3,000 pictures already and they are just perfect. I did a test with both lenses mounting the camera in a tripod and taking the picture of the same subject and i couldn't tell which one was taken with Tamron or Nikkor (not even in my big screen).
The focusing is pretty fast, well suited for fast paced situations such as weddings and concerts where everybody is in constant movement, also very quiet! If you are on budget i strongly suggest you to buy this lens and you wont be disappointed. My copy serial is almost 30,000 so i guess previous issues have been solved. The only problem i have found is that on the wide end (17mm) corners are a bit soft (not too much to notice at first sight) but that doesn't bother me because i use it between 20mm and 28mm most of the time.
Note that i have been using the lens on a Nikon D300 and i take around 500 pictures per event average.Read more ›
About all I could complain about is the motor, which is noisier and seems slower than the 18-55. It works though which is the main thing! Build quality seems solid.
Mine is Japanese-made according to the label, serial number 29xxx. One would hope that after building nearly 30,000 of the things they would have any quality control problems worked out.
Update 01/2010: I posted my review originally 14 months or so ago and in that time I've upgraded from a D40 to a D90 and picked up a few other lenses along the way for specific situations (f/1.4 Sigma prime, 55-200mm Nikon long zoom, 105mm Sigma macro). It's more plasticky in construction than any of those but is still my favorite lens, not just the one I use the most, because of the quality of the images. After 10,000+ shots taken I'm not noticing any mechanical or electrical problems. Seems other people have, I guess I'm one of the lucky ones!
Most Recent Customer Reviews
I purchased this lens used from Japan, so it should be worn in. I am using it on a Pentax K5-II.
I am pleased with the lens over all. Read more
My new all- day, all- purpose lens, this les is sharp, and fast, Focus, auto and manual, is quick. No hunting for the subject. Read morePublished 3 months ago by Douglass Carter
I bought this lens used from Amazon. It arrived in original packaging, including the plastic inside. Lens caps and hood etc. all in perfect condition. Read morePublished 3 months ago by majenkins8
Good lens tack sharp throughout the focal range bokeh has alot to be desired a little slow on focus lock sometimes in lowlightPublished 4 months ago by Kevin
Great walkaround lens for a crop sensor. Useful focal length, great pics, a little soft at 2.8 but what lens isn't soft wide open, step down to 5. Read morePublished 4 months ago by Vince Phan
I just purchased this lens for my new sony A77II. I also own fuji and let me say that this lens is SHARP when you step it down a bit. At 2. Read morePublished 4 months ago by am
This is a great lens by Tamron. I have one for Pentax and one for my Nikon Kit. They are economical lens that provide versitility, expecially in low light conditions.Published 4 months ago by Smeckatella