POPO, STOP! HALT!
You're about to make an early decision that could be huge mistake, because you'd spend a lot of money on a very good lens, and later find out you'd want another one. Then your money is all gone, and selling the lens so you can buy the other is no option, because resale value is less than the price you paid.
Look at this image:
You'd rather have that beasty right? A Zeiss lens, first of all, or so it is rumoured to be (looks like it is). Larger coverage, from 70 or 80 to 400mm! 400mm, imagine! That's 600mm on your camera. Great for wildlife photography and spying on neighbours! Very high quality, just like the 70-300 F, but... this also feels even better. Bigger, heavier, more professional look. As you know, I've tried the 70-200mm and holding such a lens is a pleasure, and forces you to get more creative too!
It's also got a tripod mount, which will result in better balance. And it might not extend as much as the 70-300 (which is extremely long at 300mm), which is a good thing!
So please popo, don't buy the 70-300mm yet. It's only about a month till Photokina, which is when this lens will probably be announced. Then you might have to wait a short while before it's available, but it'll be worth waiting. What a lens!
Did I do well, trying to stop you?
- Bjorn -