How many photos does Lenovo Photomaster hold?
Lenovo Photomaster doesn't have a limit on how many pictures you can add to browse on its interface, but if you add too many then you can expect a decrease in performance for Photo Master only.
I've seen on a website some users that had 5000+ images added into the application and the program worked without errors.
To have maximum performance, always use the latest version: http://www.cyberlink.com/stat/oem/cyberlink/PhotoMaster/enu/index.jsp