On Sun, Oct 18, 2009 at 12:34:08AM -0400, John Francis wrote:
> On Sat, Oct 17, 2009 at 07:19:45PM -0700, Tim Bray wrote:
> > On Sat, Oct 17, 2009 at 3:10 PM, paul stenquist <[email protected]> 
> > wrote:
> > >  With the 12-24, 16-50,
> > > 50-135, and 60-250, I'm prepared for almost anything.
> > 
> > Especially physiotherapy. I know some good chiropractors too if you
> > need a referral.  Primes are back-friendly, and none of us are getting
> > younger. -T
> 
> Hah.  Try walking around the track for an afternoon lugging a couple of
> bodies with (battery grip), an 80-200/2.8, a 300/2.8, and the 250-600.
> Just the 250-600 probably weighs more than all the lenses Paul lists.

  12-24   430g
  16-50   600g
  50-135  765g
  60-250 1040g
  ============
  Total  2835g

That's only a little over half the weight of the 250-600 (5400g).
In fact the 300/2.8 alone, at 2970g, outweighs Paul's collection,
while the 80-200 adds another 1510g.  As the 300 demonstrates,
the combination of focal length and maximum aperture costs weight,
even if you stick to primes.


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