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Canon EF 24-105mm f/4L IS USM

24-105lisusm
Review Date: Jul 13, 2008 Recommend? yes | Price paid: $925.00 | Rating: 10 

Pros: A very versatile and excellent performing lens.
Cons:
Quality varies from copy to copy

This was my second 24-105. The first one was a refurbished lens that must have had de-centered elements because the entire right side of the images were blurred and distorted. Some time later I found a brand new one cheaper than the refurbished so I decided to try the lens again and to my amazement it outperformed my most optimistic expectations and the excellent IS makes up for the f/4 maximum aperture.

Its performance on my 5D puts my previous favorite, the very good Tamron 28-75, to shame. Over my 58+ years in photography I have never been so surprised and impressed with a lensís performance, even wide open.

Granted there are differences between copies of the same lens and this maybe the exception it never the less proves what the lens is capable producing.


 
Tamron 17-35mm f2.8-4 Di LD Aspherical

sp-af17-35
Review Date: May 2, 2006 Recommend? no | Price paid: $460.00 | Rating: 2 

Pros: Nice zoom range with f/2.8 aperature for 1.6X sensor.
Cons:
Poor optical performance at 17 mm & 35mm. F/2.8 only available @ 17mm.

Recieved the lens yesterday and returning it today. Gives excellent performance in middle ranges but unacceptable at 17mm and 35mm. 17mm gives soft images and lower right corner of 35mm images is badly distorted on 1.6X sensor (possible element de-center problem) and this lens is designed for Full Frame cameras.

I bought this lens to replace my Canon 20-35 but it gives me no real improvement. In fact my 20-35 actually outperforms the Tamron 17-35 in edge performance and I see no difference in resolution.

Maybe I'm critical but I expect to get quality that the manufacturer claims performance to offer. I have two other Tamron lenses, the 28-75 Di and the 180 Macro Di and both these lenses are excellent. Tamron is not alone in disappointing performance. I've also had to return lenses from Sigma, Tokina and Canon. All these lenses did not perform as advertised. Is that too much to ask?

snead







 
Canon EF 75-300mm f/4-5.6 IS USM

ef75_300_1_
Review Date: Apr 2, 2003 Recommend? yes | Price paid: $390.00 | Rating: 8 

Pros: From what I've been able to discover, Canon has recently made improvements to the 75-300IS and the results are very impressive. It is very sharp, focuses fast on the 10D and IS is very helpful. It is not to be compared to "L" lenses which are heavier and had a stronger build, but if you're not going to see high high they bounce, the 75-300IS is an outstanding value.
Cons:
I advise using the center focus point only when using above 200mm.