"Thank you all so much for the great info; I just got certified two months ago and am in fact going to do a few dives before bringing the camera to work on my diving skills."
Here is a practice exercise for you. Go to a pool or quarry, somewhere you will not be damaging a reef and find some spot on a dock, wall, rock that is 3 or 4 ft off the bottom. Hold your hands out in front of you, put them together forming a 2-3 in square with your thumbs and fingers, this is you "view finder". With your hands 3-4 inches from your face look through the "view finder" at your subject. Now move slowly up to within 1 ft of the spot, center it in your "view finder" and hold that postion for at least 10 seconds- the camera needs time to focus and you need time to compose the shot. Now back away from the spot without touching anything, remember your hands are holding the camera. When you can do this without crashing into anything, you stay horizonal and your depth does not change more than a few inches, you are ready to pic up a camera. If you crash into anything or your depth changes very much- more than a few inches, you need more time working on your dive skills. Surge and current will add to the fun. With several hundred hours underwater I still practice this every chance I get.
Here is a practice exercise for you. Go to a pool or quarry, somewhere you will not be damaging a reef and find some spot on a dock, wall, rock that is 3 or 4 ft off the bottom. Hold your hands out in front of you, put them together forming a 2-3 in square with your thumbs and fingers, this is you "view finder". With your hands 3-4 inches from your face look through the "view finder" at your subject. Now move slowly up to within 1 ft of the spot, center it in your "view finder" and hold that postion for at least 10 seconds- the camera needs time to focus and you need time to compose the shot. Now back away from the spot without touching anything, remember your hands are holding the camera. When you can do this without crashing into anything, you stay horizonal and your depth does not change more than a few inches, you are ready to pic up a camera. If you crash into anything or your depth changes very much- more than a few inches, you need more time working on your dive skills. Surge and current will add to the fun. With several hundred hours underwater I still practice this every chance I get.