In message , Andy Champ
writes
On 26/01/2012 14:56, Huge wrote:
Isn't a Nikonos an underwater camera
Yes.

and therefore meant to be submerged?
Sometimes they leak.

Besides which you still can't see them at the bottom of the river...

Ah! You can if they are still the-)

Firstly immersing the glass cuts out problems with surface reflection
and ripples. Second, water does not penetrate the tube so you reduce the
amount of water you are trying to see through.

regards

--
Tim Lamb