10Bar also makes a housing for the Canon G11/12 and the S95. I don't know if you noticed but the suggested working pressure for their housings is 60M/180' - IDK what that means exactly.
What about an HD video camera instead? This one shoots 11MP stills also:
The GoPro Hero HD2 - Wearable and gear mountable, waterproof to 197′ (60m), capable of capturing professional full 170º wide angle 1080p video and 11 megapixel photos at a rate of 10 photos per second.
$299 -
http://gopro.com/cameras/hd-hero2-outdoor-edition/ IDK if what your filming moves but it also has a .5 sec Time lapse mode. And an integrated battery warmer for cold temps. An LCD BacPac is $80 more. It shoots nice HD video, there's examples in the U/W Video forum here on SB.
If you need more depth, Sartek makes a GoPro housing good to 750' - yes seven hundred and fifty - for $400. It's not clear from their website what controls are accessible though if any -
Sartek Industries Product Details An option is a clear display back - I would assume that's so you can see the Bacpac LCD.
They also sell a combo camera/housing package good to 240' for $295 but it only does 8MP stills.
Sartek Industries Product Details
Of course then you need light(s). Aditech makes a 4320lumen/40 watt video light that retails for $635 - $735 if you want it in a canister model - might be easier as the GoPro housings are tiny and this light isn't. Those may be prices in Europe though, Reef Photo lists it at $949.
It's good to 200M/660' The burn time is an hour at 100% and 3 hours at 60%. That should be plenty of light even 250' down in the Great Lakes - but verify that with someone locally. It's a really bright light, my buddy has one.
Shop - Mangrove - Aditech | Underwater video and photo online store
They also sell a smaller 2280lumen/20 watt model. It's $790. Reef Photo in Ft. Lauderdale sells them.
http://reefphoto.com/shop/index.php...9c806c88dfdc2b88ee75e651ee642&main_page=index
Add about $200 for a good tray/handle/arm combo and you're still under 2K - and a lot deeper than you need.
When you push a 200' rated Ikelite poly housing past that, the controls often compress and freeze up - sometimes activating whatever they're controlling non-stop. So although the box/glands can take it, you can't always use it deeper.