Hum... I don't know...
Pierre
At 17:58 5/29/2001 -0300, you wrote:
>Good topic: How much quality suffer?
>
> >
> > I have the 100-400/4.5-5.6L IS and I use it with the new Canon 1.4 TC for
> > birds, which gives me 560mm, and I sometimes wish I had the 2x TC
>(800mm),
> > but then quality would suffer.
> >
> > Pierre
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