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  Reviews by: mshill  

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Tamron 28-75MM F/2.8 XR Di LD Aspherical (IF)

Review Date: Dec 9, 2005 Recommend? yes | Price paid: $275.00 | Rating: 8 

Pros: Inexpensive, Fast, Light, Sharp as a tack at f4
Soft wide open.

I sold my Canon 28-135 IS for this lens. Took it on a shoot this evening on my Rebel XT. Indoors with flash, very nice shots at F4 and 1/60.

When I got Home I setup some test shots with my Canon 50mm/1.8, Tamron 28-75/2.8, and Sigma 70-200/f2.8. I found that at f4 and above the Tamron was as sharp as the 50mm prime at the same aperature. Wide open,at 2.8, the Tamron was quite soft at 28mm and 75mm, but at 50mm it was close to the 50mm prime.

At the same aperatures this lens is much better than the Canon 28-135. I basically traded the IS and extra range of the Canon lens for the faster/shorter Tamron and got a bit of sharpness at the same time. I have to admit that for the price I did not expect this lens to be as sharp as it is.

The lens isn't too heavy, but the plastic finish has a cheap feel to it when compared to the Canon 28-135 IS or the Sigma APO 70-200 EX. It is really too bad that we usually equate light weight with cheap build quality, cause I do not believe that this lens is built cheaply.

So far I like it. I will really need to take a lot more shots before I can comment of the contrast and color.

Sigma 70-200mm f2.8 EX APO IF HSM

Review Date: Nov 22, 2005 Recommend? yes | Price paid: $670.00 | Rating: 10 

Pros: Sharp optical performance throughout the focal range, Fast F2.8, Price. I love the look and feel of the EX finish on this product.
Just a bit soft at 70mm/F2.8 but you have to look real close to see it. The (free) tripod mount foot is right under the zoom ring (just an inconvenience).

Just got it today and shot about 100 frames with it. I actually setup a test shot and took about 50 frames with my Canon 50/1.8, Canon 28-135/3.5-5.6 IS USM, and this Sigma APO 70-200/2.8 EX at numerous aperatures. I framed the test shot the same for all focal lengths (50mm, 70mm, 100mm, 135mm, and 200mm) so the image on the 350D sensor would all be nearly the same.

I was surprised at how well the big zoom held up in optical quality to the 50mm prime in all cases except at 70mm/2.8. Even at 200mm the Sigma was just as sharp or sharper than the 50mm prime at 2.8, 3.5, 4.0, and 5.6 aperature settings.

I am shooting a family portrait in two days. I will again be using all three lenses in the shoot so I will hopefully be able to get some more shots with this lens.