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Posted by Pat Horridge on 10/25/07 11:47
Yes your right of course. The mass of blue water above is of course a
massive anti red filter.
"Martin Heffels" <goofie@flikken.net> wrote in message
news:m5t0i39qcrdr8ahmelphl0jv7ecpjkm1rd@4ax.com...
> On Thu, 25 Oct 2007 10:12:12 +0100, "Pat Horridge"
> <pat@remove-spam.vet.co.uk> wrote:
>
>>Or maybe a camera filter with strong red bias to restrict the amount of
>>blue coming in.
>
> It won't help, because there simply is no red available at greater depths.
> Here http://www.seafriends.org.nz/phgraph/water.htm#colour is a table
> which
> shows the loss of colour at depth.
> The only solution is to light it.
>
> cheers
>
> -martin-
> --
> Official website "Jonah's Quid" http://www.jonahsquids.co.uk
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