can refer the video that i post...that's the thing that i want to build..
The camera in the post looks to me like a Canon IXUS, which is not a DSLR or an SLR.
I doubt it has an external shutter release.
If the camera you have is like the one in the video, how confident are you in opening up the casing and putting it back together with wires soldered to the shutter switch?