On Fri, Dec 07, 2007 at 12:58:04PM -0500, Singh, Sarbjit (S.) ([EMAIL 
PROTECTED]) wrote:

> I am a proud owner of an EOS 20D and use it for portraits, kids sports
> and a few landscapes. 

I'm assuming that's what you're going to be shooting in the future as
well (not planning to get seriously into birds, for example).
 
> I need your expertise to help resolve which lens out of
> EF 70-200mm f/2.8L IS USM      OR
> EF 28-300mm f/3.5-5.6L IS USM
> will make more sense for me

You don't tell which lenses you already have, but if such a choice
makes sense at all, I'd choose the 70-200 without hesitation.

> I have heard a lot more about the 70-200mm than the 28-300mm - does the
> 70-200 so much sharper resolution that it will beat 28-300 hands down ?

Yes. What's more, and perhaps more important, the wide aperture
makes it *much* better in low-light or fast action situations
like sports, and it gives you better DoF control in portraits.

Not that the 28-300 is really bad (it's certainly better than Tamron
28-300 and the like), but it's a big compromise, and I'd only consider
it if you frequently find yourself in situations where you cannot
change lenses (even then I'd consider carrying a second body instead).
Even if you think 200mm is too short I'd suggest getting the 70-200
and adding 1.4x TC - it'd still be faster and and probably sharper
than the 28-300.

The only big downside in the 70-200/2.8 is that it may make
all your other lenses feel so bad you'll end up replacing
them all with L glass. :-)

-- 
Tapani Tarvainen
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