Setting White Balance Underwater on Nikon D100

[growtogether]

I've been shooting mainly macro with strobes in RAW setting, so have not really focused on setting white balance with the D100.

I have a 10-20 sigma in Athena 170 port/Nexus D100 housing. I'd like to adjust the WB underwater to reduce need to make changes via software.

I understand that one of the D100 "flaws" was the difficulty of setting WB underwater. I've heard some have come up with unique ways to accomplish this.

Anyone with experience on setting WB with D100 that can share "step by step" how you do it would be much appreciated!

 

[victor]

If you are saving in raw mode then I thought there was no point in setting the white balance.
My understanding is that setting the white balance only creates an XIF tag which the conversion software may or may not pick up when it is doing the conversion. It does not affect the raw data which is stored.

 

[somewhereinla]

Unless you are an expert colorist, shooting without setting your white balance is not the best thing to do even if you shoot RAW. First of all RAW is a very missunderstood format and it is not universal. Each manufacturer has their own "flavor" of RAW. Not all RAW are created equal...
Furthermore it's not good practice to depend on post processing technology to achieve good photography.

 

[victor]

Furthermore it's not good practice to depend on post processing technology to achieve good photography.

My understanding is that if you are using the white balance feature then you are post processing the image. The question is do you want the camera to do the post processing for you as it stores the picture as a JPEG loosing potentially valuable information on the way or do you want to save as RAW and capture all the available data and then process it later when you have multiple opportunities to create a satisfactory image.

Under water unless the majority of the light used to capture the image is being provided by the strobes and the distance to the subject is constant the white balance will be constantly changing due to reflection and absorbtion.

I stumbled across a PDF that helped me understand white balance and raw, it might be a help to others. It is photoshop specific but the principles apply to all products.
http://www.adobe.com/digitalimag/pdfs/ps_workflow_sec3.pdf