From: Yen-Yi Liu <[EMAIL PROTECTED]>
> The reason the white lenses are white because some of the white lenses
> contain flourite, which permanently distorts your image (it literally
starts
> melting) at around 150 ~180 degrees F.  The white color keeps the lens at
a
> cooler temperature than a black colored lens.

Yes...

But all lens doesn't contains fluorite...

For example the 200mm 1,8 !

But who cares... :)

-- PhOTo -- vOYaGe -- GrAPhiSMe --
Portail : http://perso.magic.fr/drocha

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