Too big and too much money? Costs about the same as a 24-105 f4 IS... doesn't weigh much more... as for white... get a lens coat.
Well, you can often find the 24-105 used for as little as $750. Can't find the 70-200 f/4 IS for that price. Probably because no one will let one go! I know it's that good. But I have the f/2.8 version and I'd never be able to convince myself to have one of the f/4 versions also. I do not like the way the white lens attracts a crowd (or a thief) in non-pro situations. I also have to believe the price would be closer to $750 or $800 for the 105 to 200 f/4 but maybe that's too naive. It can't cost as much as the $1,250 we'd pay for the 70-200 f/4 IS.
I dunno what a 105-200 would weigh. I'm in my lab right now working on that...
I know plenty of people like the overlap from their 24-105 and their 70-200 whether the latter is 2.8 or 4. But, call me crazy, I'd like the lack of overlap in the 24-104 and 105-200 duo. Same reason they did the 24-70 and 70-200.
It would likely be bigger and more expensive than the 70-200 2.8L II. I still think about the discontinued Sigma 100-300 f4 from time to time ...
