« on: November 08, 2014, 04:16:41 PM »
Slightly bigger and 15% heavier than the older 100-400. I guess this was required for the upgraded IS.
I suspected it would be heavier, those helicoils add weight; I think the linear extension of the Mk I allows for the lowest possible mechanical complexity, and hence weight for a telezoom.
It's a sleak design - very nice. I feel some excitement but not overly so. The season for short primes has begun and most/all my tele work using slow zooms will be suspended till spring so I can wait.
I'm torn between this, or a 400DO II. The 100-400 would require a 7DMkII to get the reach I've been missing - de 400DO II will take my 1.4TC. All in all it's a lot of money and like I said, I can wait at least till the prices of these lenses come down a little.