Proper zoom for panoramic photos

[bfrazier23]

I have a Canon 20D (1.6 crop). I recently tried to take some panoramic photos at 35mm zoom setting and got lots of distortion. Can anyone tell me what I should be shooting at?

Here is my picture if anyone is interested:
http://image50.webshots.com/150/6/11/59/2079611590089587892NYQyoa_fs.jpg

It's a panoramic shot of Red Rock Canyon outside of Las Vegas.

Thanks!

 

[dYsfunctionaL]

Forbidden

 

[LaFoto]

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