This is my first underwater DSLR housing, yep.
I'm going on a trip organized by my LDS, and they offered the PADI UW photo course. Perfect! The instructor seemed great... until he cancelled last minute (without even telling any of us... but that's a whole other thing.)
So, I thought I'd have plenty o' time and instruction to become best buddies with my new-to-me housing. Nope.
I'll bring my Olympus TG-5, but that's only good down to 40' and no shutter-priority which is how I shoot... So I'm pretty damn bummed. The housing I bought is for my back-up body, but still-- I don't particularly care to flood my back-up, either.
edit: Oh, I did email the instructor and asked if I could buy him a beer and go over the system together.... we'll see. There's no "Reef Photo" type place in NYC where I can go. Doesn't help that it seems no one else uses Subal!
My advice is to do what I did. Do not sign up for ANY AGENCY UW PHOTO course UNLESS, the instructor is actually an accomplished photographer.
You don't even need a scuba instructor at all. You need an underwater photographer. My goal when I got into this was to get to the point where I could offer an ENTRY level UW photo course.
What I found out was that there is a lot more to it than getting an agency to give me an instructor card that says UW Photo instructor.
So much more that even though I have had some shots published and have used them for my own books and articles, I am not at the point where I feel I could offer a class that I would want to take.
Especially if the student wants to shoot with a DSLR. I started into DSLR shooting almost 3 years ago. Underwater, just over two. I spent dozens of hours in the pool playing with lighting, exposure settings, apertures, ISO's and shooting pics of bugs that had drowned, pool toys, aquarium plants, etc. Over an entire winter once a week or so doing this. Then I took a workshop from a photographer that has been on assignment for Nat Geo, Discovery Channel, and other outlets.
My other instructor is my Ikelite dealer and he is only a dealer and underwater photographer. I worked with him and got various tips.
Right now I feel I am still about a year away from getting good enough to offer that class.
If you want to get good with the camera, go to B&H or Adorama and ask who they think in the area is shooting great UW shots since you are in NY. Don't ask your LDS unless their guy is a pro photographer and can show you his work in publication.