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Old January 31st, 2008, 10:09 PM   #1
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How do they keep that lens dry?!

I've watched movies where the camera goes from underwater to above water in one shot, yet no water droplets on the lens glass are visible. How do they do that? In other shows--where the camera is running through a raining forest--the camera remains spotless yet there HAS to be water droplets landing on the lens.

My only uneducated guess is there is a spinning glass disk protecting the lens that "spins away" all affecting wetness. Is this at all accurate?
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Old February 1st, 2008, 01:27 AM   #2
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Hi Ben

I haven’t tried this myself, so I can’t confirm that it works… but, the tip I got is to use this type of car wax that you put on so the water rinse of without you doing something. One other thing I have seen is that the camera was on a jib and he started above water and entered the water whit the camera, then he played that part backwards. But is you going to try the second tip, make sure that you don’t got any thing in the frame above water that can be spotted going backwards.

My best tip is the car wax… I think that’s the one.
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Old February 1st, 2008, 07:53 AM   #3
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Hi Ben.
Here's a tip I used last summer when I was snorkling.
I took an apple and cut it in two.
Rub (carefully) the apple on the outside of the UWhouse lens glas, it will last for 2 - 3 min and you have to repeat. Do not do this directly on the camera lens :)

Geir Inge
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Old February 1st, 2008, 08:41 AM   #4
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rain X works good.
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Old February 13th, 2008, 01:49 AM   #5
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I agree with Rainx or saliva works ok for a couple of dunkings
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Old February 13th, 2008, 07:04 AM   #6
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Originally Posted by Ben Winter View Post
My only uneducated guess is there is a spinning glass disk protecting the lens that "spins away" all affecting wetness. Is this at all accurate?
I saw something like that advertised awhile back. It was shown as a device to use on stationary cameras at sporting events such as football games.

As others stated, a product like RainX on the face of the housing lens would also work.

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Old February 13th, 2008, 04:50 PM   #7
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There is a 'spinning glass system' that Panavision has thats used for film cameras. I've only seen it once as I primarily shoot w/ the 900/950 series and have never seen it on any of our shoots.
If you use any 'lubricants' like RainX I wouldn't put it directly on your lens but on your clear filter--just a thought.
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Old February 13th, 2008, 05:31 PM   #8
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It's called a rain deflector, and as several guessed it incorporates a spinning glass disk in a housing. Various companies manufacture them. One of the more interesting ones is made by Spintec which is quite small and light compared to older models.
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Old February 13th, 2008, 05:38 PM   #9
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One of the more interesting ones is made by Spintec which is quite small and light compared to older models.
Bingo Chas, that was the unit I had seen awhile back and couldn't remember. Thanks for providing that link.

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