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Aquatica Canon 5D + 17-40mm


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#1 Marco P

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Posted 02 January 2013 - 07:59 AM

Hi!

I have just bought a Canon 17-40mm lens for my Canon 5D and I would like to use it under the surface. I have the 8" dome from Aquatica and I need some help if I have to get a diopter or not when using the 18457 extension ring?
Marco Pennbrant
Canon 5D, Aquatica housing, 2x Subtronic Pro160, ULCS and Subtronic arms.
www.pennbrantphoto.com

#2 Viz'art

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Posted 02 January 2013 - 08:27 AM

Marco, the diopter is not obligatory, but it will improve close focusing performance, you can use either a +2 or +3 (harder to find)
Jean Bruneau / Aquatica Technical Advisor

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#3 Marco P

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Posted 02 January 2013 - 09:14 AM

Ok, thank you for your answer Jean. I will try without it first and see if I´m happy with the result.
Marco Pennbrant
Canon 5D, Aquatica housing, 2x Subtronic Pro160, ULCS and Subtronic arms.
www.pennbrantphoto.com

#4 JimG

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Posted 03 January 2013 - 01:14 AM

Marco
I used one with a 5D and the Aquatica 8" - I still do with a 5D mk2 - it definitely helps the corners to use a +2. Never tried a +3. Try to keep your aperture at f8 or tighter for the same reason.

Jim Greenfield - Canon 5D Mark 3/Aquatica
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