yb2normal

I agree with Dan, virtually any small servo will do the trick. I use a Hitec HS55 for my shutter button. I superglued the servo to the top of the camera and plugged it into my gear channel. With the control horn removed, I flipped the gear switch on the tx so the servo was in it's 'shutter pressed' position, then I put the control horn back on the servo so it was just touching the shutter button (or pressing it slightly in my case). Then I flipped the gear switch to the 'unpressed' position, and then pulled the control horn off and rotated it exactly one gears-mesh worth down. Switching the gear channel back to the pressed position brought the control horn down just enough to press the shutter, without binding the servo too badly.

Regards,
Bill