So let me get this straight: this 2.6-2.8
and this ATX pro 2.8
which are identical are two completely different systems?
The ATX PRO is not as sharp, cinematic looking, parfocal and with virtually no focus breathing as the old 2.6-2.8?
I read on here the latest ATX (non pro) http://www.kenrockwell.com/tokina/28-70mm-f28.htm has the same optics as the 2.6-2.8 so assumed even the ATX pro which is in between had the same since it's has also the same body.
If I'm completely wrong then I might just get the Tamron 28-70 f2 for less that has all the issue like heavy focus breathing, plastic build quality etc...