underwater model shots!

[Jasonrocks]

HI, i need a hand here. I need a scene involving a shot of a sub in the sea and I need an under water shot. I've got the model and all ready, but how do i film under water, and what should I do for the water tank to hold the model sub in? Does anyone know how? Ta.

[Gyro]

Watch the behind the scenes of Hunt For The Red October. You actually don't need water.

[Jasonrocks]

I'm sorry i havent seen Hunt For The Red October. What do you mean you dont need water?

[Gyro]

Well, with the proper lighting, you can make a blue backdrop look like under water.

[DEDFX]

id put the lens of the cam right next to the bottom of a tupperware container>point the container in the bottom of a pool> have a model sub that sinks but use fishing string for the front and back of it (im not saying to put the tupperware underwater, but at least 2 inches so the cam will work.

[Gyro]

That's just that though, the bottom of a pool would look like the bottom of a pool. You need some sort of blue back drop to look like lots of water.

[DEDFX]

ya but usually underwater shots are fuzzy or(a little out of focus) if you have a dark blue pool bottom (some people have) then itll look ok.

[OutcastJiob]

I'd skip using water entirely like Gyro mentioned. Get a dark, dark blue backdrop, fill up the room you're in with either smoke or one of those fog machines (careful with breathing, of course. . .make sure you have air and so on), then light appropriately and just have the model in there. I believe that's the technique they used for the underwater Gungan city in Episode I.

[Vor]

heres what you should do.
get a fishtank, fill it with water, put the submarine inside it, and put like a dark piece of paper behind it...

a few other effects for it:
put a few drops of blue food coloring, and let it swish around naturally.
make the water look mucky and add some dirt to it.
shine a few flashlight at different angles from the top.
light insense and put that in front of the glass making the cameras view look foggy.

i think i might try and film this later to show what i mean.....

[Bodysnatcher]

How did anyof these turn out? would be interested to know for future reference.

[Epsilon]

If you feel adventageous, you can make a waterproof box for your camera.