Canon L vs other canon lens/sigma

[JSPhoto]

Thanks everyone for the input, As soon as i get it I will let you know how it is!

Also is there anywhere that takes trades, I have the Rebel XT now but would like to get into the 5d. I have the warranty with Best Buy and i am sure if the Rebel was to break i could just upgrade, especially since i worked there for 8yrs. That may be the best route but would rather go into a camera shop and just swap out, because i would have to order the 5d online and wait for it.

Hey LensCrazy,
I think, personally, I'd avoid the 5D for a sports camera. Heck for $400 more you can get the 1D MKII N. The 5D is not up to the standards of a sports shooters camera in any way. OK, it has full frame, but that isn't worth the money at this time and point. FF technology has some catching up to do before it will reach acceptable standards.
Sport shooters need faster cameras, ie: 8.5 frames per second compared to 3 and 5 on the 20D, 5D and XT. They also need more buffer, the 5D dosen't come close to the 1D or 1D MKII N which are 20 and 48 frames!
Finally, sports are shot in all kinds of weather and the 5D just doesn't have the seals to keep out the dirt and moisture.
Thats just the important differences.
JS

[mjs1973]

There is an article in the December 05 issue of Popular Photography and imaging that you might find interesting. It took kit lenses from Nikon and Olympus, and did a side by side review of the against their pro level lenses of about the same focal range. If I remember correctly there were 7 categories that they used to compare the lenses. The sharpness category was the most surprising. In some cases the kit lens was just as sharp as the pro lens, and at some focal lengths even beat the pro lens. It was the other categories that I can't remember where the pro lenses realy outshined the kit lenses. I wish they would have used some Canon lenses in the test also...

Personally, I don't think you can go wrong with a Canon L series lens.