On Wed, 03 Oct 2001 17:32:04 -0700 "Tom DelRosario"
<[EMAIL PROTECTED]> writes:
> I thought that L series meant a lens was built better and more 
> expensive.  In looking at a catalog, it appears that all the TS-E 
> models are the same price, yet only one of them is L.  It also 
> appears that the 100-300/4.5-5.6 is roughly the same price as the 
> 100-300/5.6, but only one of the is L.  
> 
> What differentiates the L-series lenses from the other lenses?

Canon uses the "L" designation if the lens contains one or more elements
constructed of:
* aspheric ground glass
* fluorite crystal
* UD glass
* SUD glass

Dave Herzstein
[EMAIL PROTECTED]
http://www.kjsl.com/~dave
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