Hello,

I've searched the forum and I can't seem to find what I'm looking for, so I figured I should just pose the question for some help.

What is the order of IQ in terms of the 70-200 canon variety? Or does the cost dictate the order of IQ?

I've seen it here on the forum, but I think it was just posted in a thread for reference. If at all possible, I'd like to know which gives the sharpest picture/IQ, from best to so-so. I'll take a stab at it, and hopefully members can post some feedback on how I think it goes;

1) 2.8 ii IS --------Best IQ

2) 2.8 i IS

3) 2.8 non-IS

4) 4 IS

5) 4 non-IS --------So-so

If that is incorrect, someone please tell me what it should be?

Thanks in advance.