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TAMRON 28-300mm F/3.5-6.3 XRDi LD Aspherical IF Macro lens by Allen Birnbach Over the last couple of weeks, I’ve had the opportunity to test the Tamron 28-300mm F/3.5-6.3 XRDi LD Aspherical IF Macro lens.  I used it in a variety of situations, and was very pleasantly surprised. Article rating: 7.59

This lens has some interesting attributes. First, the focal length range of 10.7 is a real selling point, especially for a location photographer like myself.  Couple this lens with a short zoom, and you have a very light pack when you hike off into the wilderness.

Second, the lens has an image stabilizaton system that Tamron calls “VC” for vibration compensation.  It not only compensates for vertical and horizontal movement, but also for diagonal shake.  That means less need to set up a tripod when the light levels are low, but you want to shoot at the lowest ISO possible.

Finally, it has the closest focusing of any of the superzooms out there, a great benefit for both macro and people photography.

The proof is in the pudding, though, and my experience was quite favorable.  The lens is light and compact, (19.4 oz, and roughly 3 inchs wide x 4 inches long at 28mm) so I never felt like I had a lot of weight pulling me down.  And with such a long range of focal lengths, it meant I was instantly ready to bring the camera up to my eye and shoot almost anything I was interested in.  Less fussing around, more spontaneous images-a real plus.  I found the controls to be well marked, and fell under the hand quite nicely.

The image stabilization system worked very well, and the macro shot posted here was exposed at 1/50 of a second with the lens at 300mm is a fine example of this.  With a fixed focal length lens, the rule of thumb is a shutter speed equal to 1 divided by the focal length of the lens to insure a motion-free image.  In this case, then, I should have been shooting at 1/300 or above, so I gained 2.5 stops, meaning I could still shoot at IS) 100 vs. ISO 250.   That translates into less noise in the file and a better image.

And speaking of the macro shot, I was able to focus just 6 inches away from my subject (the minimum focus distance listed from Tamron officially is 19.3 inches though).  Truly astounding at 300mm, and again a great timesaver because I didn’t have to put on a diopter on the front of the lens to get that close.

Shooting in a variety of situations, I thought the color and contrast of the lens was very good.  Sharpness was excellent at the wide focal lengths, and diminished as extended to the longer lengths.  The tight photograph of the rocks with the snow covered mountains in the backgrund, shot at  300mm was a bit soft, but could be cleaned up pretty well in post production. 

Overall, I was very impressed by this lens.  As with any equipment purchase, you have to ask yourself what the application is.  If you are a professional looking for the sharpest image that can be enlarged to a significant level for exhibition, you are probably best served to stick with a series fixed focal length lens.  But if you are a photo enthusiast who will not be making big enlargements, and want a great general purpose zoom that you can count on coming through in a large variety of situations, this is a lens certainly worth considering, especially at this price point.

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	I enjoy all I can get to read about photography. Nothing is boring to me with Photography. And the part about the ISO is great. Small and simple but good info. So thank you Allen. Waiting for more of your work especially with the info on how you shot each picture. Must look for you at a book store. I liked the picture with the snow in the back ground and I don't think I would want to wash that part out of the picture. Seems the clouds or fog in the picture closer to the MT. is a good shot and writes the rest of the story in the picture. Thanks for your hard work Allen. Thank you Take GREAT Pictures. Com Waiting for more of this Posted by: H. Bob Self Apr 17, 2008 @ 7:12 PM EST
	It provided a well balenced report! Posted by: Ralph Nordenhold Apr 18, 2008 @ 11:16 AM EST
	precise Posted by: pavan Apr 18, 2008 @ 9:7 PM EST
	PROBABLY ON THE BIAS SIDE IN YOUR FAVOR. HOWEVER, IT IS INFORMATIVE AND I WILL TRY TO COMPARE A TAMRON WITH A CANON LENS AND SEE IF THERE IS ANY SIGNIFICANT DIFFERENCES. THANK YOU FOR HAVING THE WEB SITE. Posted by: DONALD ESFELD Apr 24, 2008 @ 4:30 PM EST
	Thanks for the helpful and informative article. Note that 100 ISO with a 2.5 stop advantage would translate to an ISO 640 or so equivalent, 200 being one stop, 400 being a second, and 640 going half way to the third stop at 800. Even with top DSLRs, getting the same shot at 100 that you would normally get at 640 means a lot less noise and better image quality. Thanks again. Posted by: GJ Apr 27, 2008 @ 1:48 AM EST
	por favor enviar todas las informaciones en español ok. Posted by: oscar ricardo acosta rodriguez May 3, 2008 @ 9:53 PM EST
	deseo sabar mas de su producto y donde se puede adquirir en españa madrid es perando toda la iinformasion al respecto de su producto Posted by: oscarr ricardo acosta May 3, 2008 @ 9:57 PM EST

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