« on: December 03, 2013, 10:30:27 AM »
Here is some info from the spec sheet;+1 on that. That's why I got the 500mm II. Even so it is BIG and HEAVY... at least compared to the rest of my lenses. Compared to most of the white super teles though it is a totally different matter - with a possible question mark in the use of 300 2.8L IS II with 2XIII - ... So no regrets even if I do not use it often, I have it available when I want to
500mm II, 112.5 ounces, 12.14 mfd, 5.7" dia x 15.1 length
600mm II, 138.3 ounces, 14.77 mfd, 6.5" dia x 17.5 length
Keep in mind length does not take in to account the huge hood.
If you plan on packing with the lens very much the 500mm would be a big advantage.
Keep in mind the extra 100mm is only giving you about 17% more reach.
In many wildlife instances that 17% can be huge, but if it is a situation where you didn't want to carry the heavier lens then the extra reach is worthless with the lens in the trunk of your car.