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Confused on a few things Aquatica- extension rings and lens gears

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#1 eric black

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Posted 28 August 2012 - 04:05 PM

First confusion- extensions such as 18458- I have an older version, 3 inches long (3 1/2 with bayonet part); backscatter lists the item as 3.25 inches ( I assume 2.75" with the 3.25 being the length with the bayonet part of the ring); Aquatica lists the item as 2 1/2 inches and 3 with bayonet. 2 questions arise
what is the deal with all the different lengths available? and can mine be used for a Nikon 16-35mm zoom lens and if not which of the other two listed can be?

Second confusion- have the Aquatica gears undergone a number change or is there a new line of gears for Type 4 Nikon cameras- they seem to have the same numbers as the older gears with the first number changed- for example the 18722 gear that I have has been replaced in the newer catalog as 48722. Are these new gears or just changes in the numbers and the old gears that I have still work?

I have a D800 housing on order and really need to know what all I have to update so any help is appreciated in advance

#2 operam



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Posted 29 August 2012 - 07:32 AM

You might want to contact Jean Bruneau directly (his Wetpixel username is Viz'art).
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#3 Poliwog


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Posted 29 August 2012 - 08:41 AM

Aquatica zoom and focus gears have undergone a revision since the Aquatica D7000 housing was introduced. Basically, the housing gear that connects directly to the zoom or focus gear was reduced in size to acommodate the ever increasing diameter of newly introduced Nikon lenses. You will have to update (purchase new gears) your zoom and focus gears to get them to work correctly with the D800 housing.

Not sure about the extension rings. You may want to do some trial and error local dives to sort out what works with what if it isn't too inconvienient for you.
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#4 Stewart L. Sy

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Posted 29 August 2012 - 01:25 PM

If you have a D800 housing coming to you, then you will need the Type 4 gear. The following housings use the new gears: AD7000, A5Dmk3, AD800.

As for the extension, the main thing to be concerned about is vignetting at 16mm. Since your current port is longer than what Aquatica lists for the 18458 then best way is to test it. If you don't get vignetting then the extension will work, not optimally as it would having the correct extension but at least you get your image. You may want to check your image corners for smearing as well.

I'd suggest asking a Moderator to move this to the DSLR section of the forum as well.



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#5 eric black

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Posted 29 August 2012 - 03:18 PM

Moderator- can this be moved to the DSLR forum- I didnt even realize I had it under the film one (or that there still was a film forum for that matter- it is wet pixel after all) thanks for the replies- Im a bit distrought that it looks like Im going to have to lay out cash that Id rather not to make this upgrade- Ive been using the same gears for the most part since I was shooting an F5 housing- and some since an n90s housing- Ive always liked the fact that ports and gears havent needed to be replaced each housing with the Aquatica system.