You can use this shutter release cable to control the shutter easily.
It can prevents the camera vibration for macro photography, super telephoto shots,and bulb exposures.
The release button reacts fast and work fine.Use it is easy,firmly insert the plug into the camera's remote control socket,
and turn on the camera,then it can work now.
Model: RS - 80N3 Type B
Type :shutter release
material : High - quality soft cores
Halfway or complete pressing:
Press it halfway down to achieve focus
Press it complete down to take pictures
Shutter release lock (for long exposures)
Press the button completely and slide it forward to lock for bulb photography or continuous shooting.
Canon 1D 1DS EOS5D 50D 40D 30D 20D 10D
1*shutter release cable