> <<But, is the $3,000 more than its 300mm sister worth it.>>
> 
> Paying the extra money will be worth it if you need the extra 100mm of
> focal length.  I can't think of anything more frustrating than buying a
> $5000 lens and always using a TC with it because you bought the wrong
one!
> I guess if you don't want to carry the 400, you could get the 300 with
the
> TC14E and lose a stop of light and some (slight) loss of image quality. 
It
> makes much more sense to buy the right one first.  Of course, if you'd be
> using a 300 most of the time and only need a 400 occassionally, get the
> 300.  Buy based on your needs.

Exactly, if what you need is a 400mm, get a 400mm. That extra 100mm
between a 300 and a 400 makes a fairly significant difference. And keep
in mind that besides price, there is a big difference in weight and bulk
between those two f2.8 AF-S lenses. The 400mm/f2.8 weights about
twice as much as the 300mm version and is much more difficult to carry.
At least I would think twice before putting the 12-lb 400/2.8 in my
backpack
and hike for a few miles.

-- Shun Cheung                [EMAIL PROTECTED]                 (732) 615-5135
      Kenya Photo Safari -- http://photo.net/photo/nature/kenya.html
          Antarctica -- http://photo.net/photo/nature/antarctica.html

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