[tebogan]

(09-14-2012, 03:47 PM)Beta Wrote: No concrete answers till now...

Again: What does "No limit on image size" exactely (!) mean?

Most imaging programs are limited to the amount of RAM that is used by the OS. Windows XP and Windows 7 32bit have a maximum memory limit of 4 GB.
Since Windows 7 64 does not have that limitation, PP 64 does not either and hence the unlimited image size.
Also, newer cameras with FF sensors with 20 mpix or more generate very large tiff files and this is where the PPPro version come into play.