Upload & Sell: Off
I'm a little late to this party, but can anybody tell me if this 'focus breathing' (FB) is a common problem with most longer lenses, to varying degrees. For example, what, if anything, does the Canon 300 2.8 do re FB? The 400 2.8? The 100-400 2.8? If this is present in these lenses as well, then this is a noteworthy but not significant issue.