Chris Hodgson of Refractions had a great presentation at MUM3 about serving large scale raster using compressed and uncompressed data. The short answer is if you've got the space, TIF is going to be faster.

http://mapserver.gis.umn.edu/community/conferences/MUM3/present/session2/hodgsonppt/view

Howard

At 11:36 AM +0100 1/12/06, Luca Manganelli wrote:
Hi, I want to know which of TIF or ECW is faster.

--
"An algorithm must be seen to be believed."
   -- Donald Knuth, in "Fundamental Algorithms"
                               http://www.trapanator.com/blog

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