Are you using the stock camera? I have a s2 and on mine I have to go to edit short cuts and it's in there. Put it in your short cuts change it then you can put the short cut you want back. It's on the bottom right.
I am trying to do this on my mothers phone and she doesn't have that option... It says switch camera, white balance, iso, resolution, wide screen, quality, self timer, geo tag, auto enhance, metering mode, review duration, flicker adjustment, auto focus, face detection, shutter sound, time stamp, grid and reset.... Is there any other way to do this?! Please help!! Very frustrated!!!!
Lookng at vito032's picture those are the shortcuts and they don't all fit on one screen Shelley, you can swipe down to scroll to the bottom for the rest. Better yet, don't even mess with the shortcuts. The proper way to do it is without shortcuts and use the settings menu. That bottom-left icon of the gear in vito032's picture takes you to the actual settings, swipe down to 'Storage' and change to Memory Card.
There is no specific method to change the camera storage. But you can change the default storage of your phone to SD card and that will automatically change the camera storage to SD card.
Settings -> Storage -> Change default storage to SD card