Question: how do i download pictures from my blackberry to my mac?
Answer: Plug your BlackBerry into a USB port on your Mac using the included syncing cable.
Your BlackBerry will prompt you asking “Do you want to turn on Mass Storage Mode?” Select “Yes.”
A disk drive entitled “BLACKBERRY” will appear on your desktop.
Open the drive. ... 
Drag and drop any pictures you want to save to your desktop.