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Dome for Sigma 10-20mm f:4-5.6 in NA-7D housing


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#1 Jfilskov

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Posted 28 April 2012 - 11:03 AM

Hi there, hope that anyone has some advice on chosing a dome for WA shooting.

Im about to purchase a Nauticam NA-7D for my Canon 7d, and I will start out getting a dome for my Sigma 10-20mm WA lens. Trying to stay away from super-expensive options, Im considering getting a Nauticam 6"or 8.5" acrylic dome - anybody have any experience or comments on these combinations? Or alternative options within a similar price range?

Im leaning towards the 8.5" because Id like doing some split shots - and I guess its better than the 6" for that.

Any comment are appreciated :-)

Cheers Jonathan

#2 kannjihyun

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Posted 29 April 2012 - 12:08 AM

The 8.5" dome is nice, but it's also a nightmare to pack. Too fragile for the checked baggage, but also too bulky for your carry-on

#3 andy_deitsch

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Posted 29 April 2012 - 09:35 AM

I have the 8.5" acrylic dome for the NA-7D and don't have a problem packing it. It goes in one of my carry-ons (ThinkTank Antidote) along with my housing, camera, lenses and laptop. All of the rest of my gear goes in a second carry-on.

I like the 8.5" dome but I have noticed that it picks up minor scratches on the outer edges of the dome which tend to hold on to air bubbles. I now make a regular habit of swiping my hand around the dome to get rid of any bubbles but I lost several good shots from a dive because I hadn't noticed them when looking at the pics in the LCD screen and only saw them later in post-processing.

Canon 7D, Nauticam NA-7D, 2x Inon z240, Tokina 10-17, Canon 60mm
Flickr: http://www.flickr.co...tos/andydeitsch

 


#4 Ryan

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Posted 30 April 2012 - 07:00 AM

The 6" and 8.5" acrylic domes (pn 18801 and 18802) are both cut from the same size optical element. 18802 retains nearly the full hemisphere allowing it to be used with fisheye lenses, and 18801 is cut down leaving only the portion of the lens needed for the 110deg field of view from Sigma 10-20. Performance in general, and over/under performance, will be identical in either port.

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#5 Jfilskov

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Posted 14 May 2012 - 10:39 AM

Hi guys, thanks a lot for the feedback and the technical details! Considering that at some point i might pick up the Tokina 10-17mm fisheye lens, Im probably best off getting the 8,5" right away...and then just deal with the hassle of transportation.

Cheers Jonathan