The Canon 7D has 4 different timers:

  • 4 seconds
  • 6 seconds
  • 10 seconds
  • 16 seconds

The 4 seconds timer

  • The LCD panel and viewfinder information display their information after the half shutter button press.
  • The review time for the photos. Configured through the Shoot 1 (red) menu as a 2 seconds (the default), a 4 seconds or an 8 seconds.
  • Exposure compensation after pressing the shutter button
  • Metering timer. Configured through the Shoot 4 (red) menu.

The 6 seconds timer

  • The <AF Drive> button
  • The <WB> button: the white balance
  • After pressing a button and selecting with the main dial (next to the shutter)

The 10 seconds timer

  • The <Q> button

The 16 seconds timer

  • The <M-Fn> button for the Flash Exposure Lock (FEL)
  • Metering time in Live View/Movie shooting
  • All dSLRs have similar timers. Not just Canon but also Nikon, Sony, Pentax…
  • With the more expensive dSLRs, you can customize many of these timers.