go light
I'm still struggling with whether or not to pop for Canon's 500mm lens. The two major considerations are cost and weight. $5,000+ is not chicken feed -- 8 1/2 lbs. + camera + tripod is not a light load to haul in the field. It was therefore interesting to read the following in Art Morris' latest newsletter about his recent trip to the Galapagos:
My choice of going extremely light with the 400 DO(rather than the 500 f/4), the 70-200 f/4 (rather
than the f/2.8, and the EOS-40D bodies (rather than
the EOS-1D MARK bodies) turned out to be a great way
for me to go. This is the same combo that I went with
on the Wild Britain Cruise.