Gdyby ktoś potrzebował to program gphoto2 pod linuxem pokazuje przebieg migawki w 500D
gphoto2 - Linux Command - Unix Command
- installed VirtualBox
- installed linux (mint 11)
- installed gphoto2 package
- connected my camera w/o sd-card (canon 500d/T1i)
- typed in terminal "gphoto2 --get-config /main/status/shuttercounter"