
Dome ports for D800+Sigma 15+Nikon 16-35
#1
Posted 08 December 2012 - 08:45 AM
I placed the Aquatica moisture alarm in it - works great !!!
Problem - The Sigma 15 fisheye with Sea&sea 6 compact dome with and without 20' ext' ring gives good sharpness in the center and horrible smeared edges !!!
The 10' Sea&sea (240) dome port with the Nikon 16-35 is even worst !!
Do any one here can recommend a better rig ?
Does the ones that use the Zen dome port (I think it was the 9') get better results ?
Do you have to croop any way
#2
Posted 08 December 2012 - 08:51 AM
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#3
Posted 08 December 2012 - 09:14 AM
In regards to the Nikon 16-35 it is a matter of proper placement of the dome in relation to the nodal point of the lens. In short you have to find the right extension for your dome.
Here is some related information
Wetpixel: Thoughts on Mini Domes
Creative Illusions Photography: T1017M5 Port for Nexus Housings
Wetpixel: Barry Guimbellot designs DIY small dome port for CFWA
Cincinnati, Oh
http://www.UwCameraStuff.com
Home of the Housing Sentry, the ultimate leak prevention system.
#4
Posted 08 December 2012 - 09:31 AM
Do you refer to the D800 (not any other camera) ?
My problem is not vignetting, it"s a completely smear - I used my very old 5D with Ikelite dome and the results were much better.
It's not a croop camera but the results are un acceptable !!!
#5
Posted 08 December 2012 - 09:54 AM
I think a Zen 200 will work better for the Sigma 15 with an ext 20, you can get them in a S&S mount. It will work for the 16-35, but the corners may be soft - a 230 is much better.
What extension are you using with the S&S FE dome? You will need about 70mm for the 16-35.
Jack
Jack
Jack Connick
Optical Ocean Sales.com
Nauticam, Subal, Sea & Sea, Olympus, Seacam, Gates, Ikelite, Zen, Fix, 10Bar, Kraken, Light & Motion, iTorch/I-DAS & Fantasea Line
Cameras, Housings, Strobes, Arms, Trays & Accessories. System Packages. Photo Expeditions.
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#6
Posted 08 December 2012 - 10:23 AM
Cincinnati, Oh
http://www.UwCameraStuff.com
Home of the Housing Sentry, the ultimate leak prevention system.
#7
Posted 08 December 2012 - 10:30 AM
I use the new model 4 screw Hugyfot 130mm Minidome on my Hugyfot housing and it works great but still a few millimeters of the upper sunshade is visible.
I used also the Athenas 174mm vario dome with a adapter ring for Hugyfot and it worked well, but all 4 tips of the sunshade is visible
f stops above 8 will help to improve corner sharpness
Chris
Nikon D800 + Sigma 15mm + Nikon 105mm Micro VR + Hugyfot Housing + 3 Inon Z-240 strobes + 2x2 8'' ULCS arms - Panasonic LX100 + Nauticam Housing + SubSea +10 diopter
Nikon D90 + Ikelite housing + Ikelite DS125 strobe (for sale) - Nikon D7000 + Hugyfot housing (for sale)
Canon G1X + Canon OEM housing (sold) - Canon G12 + Patima aluminium housing (for sale) - - Fuji E900 + Ikelite housing (for sale)
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#8
Posted 08 December 2012 - 10:36 AM
The lack of edge sharpness you are experiencing is due to the curvature of the dome. It is not related to the dx or fx camera. To get a "great" picture with a fisheye lens underwater you must have a hemispherical dome. A definition of a hemispherical dome is that the diameter of the clear part of the dome is twice the height of the clear part of the dome. Most domes are not made for fisheye lenses and are not shaped properly. There diameter is three times there height.
Cincinnati, Oh
http://www.UwCameraStuff.com
Home of the Housing Sentry, the ultimate leak prevention system.
#9
Posted 08 December 2012 - 11:01 AM
I got very nice results with my old 5D and Canon 15 2.8 fisheye.
I get now very bad results with my D800 and the 2 dome ports.
I need some one having the same gear and Sea&sea mount to advise me exactly what to use - I have both 20 mm and 40 mm by Sea&sea.
I hardly know about other manufacturers ext' rings and dome ports and there size, so, please advise me exactely what to buy !!!
#10
Posted 08 December 2012 - 12:33 PM
On FX you are able to resolve much more detail. The Sigma is much sharper than the Tokina. Again, it's in the eye of the shooter whether it's ok.
Alex has a post here with some comparisions.
A rectalinear lens like the 16-35 is not going to give acceptable results in a 6" dome period, IMHO. You're putting a porshe behind a K-car.
Here's a couple shot with the Sigma 15 an 8.5" Nauticam acrylic dome with 20mm ext.

Under & Over by Pixel Letch, on Flickr

Soft Coral Bouquet by Pixel Letch, on Flickr
Edited by JackConnick, 08 December 2012 - 12:36 PM.
Jack Connick
Optical Ocean Sales.com
Nauticam, Subal, Sea & Sea, Olympus, Seacam, Gates, Ikelite, Zen, Fix, 10Bar, Kraken, Light & Motion, iTorch/I-DAS & Fantasea Line
Cameras, Housings, Strobes, Arms, Trays & Accessories. System Packages. Photo Expeditions.
Blog & Gallery: Optical Ocean Sales Blog - Flickr Galleries: Optical Ocean on Flickr
#11
Posted 08 December 2012 - 12:45 PM
I had a customer that asked they same question about the Sigma. According to the information I have recived the Sigma 15mm would work fine behind S&S Fisheye Dome Port 240 with the D800. I have seen a couple of pictures from that setup by myself, and it really looks good! I would say perfect!
What can be wrong in your setup there? What f-stop do you use?
#12
Posted 08 December 2012 - 12:48 PM
http://www.seaandsea...mchart/009.html
http://www.seaandsea...mchart/008.html
You have to do some interpreting - the Sigma 15 + an SX ext ring (20mm) should be fine.
But I think the largest dome and at least a 60mm ext are necessary for the 16-35. S&S doesn't really have a 9" dome, so I would go with the glass Zen 230mm for best results.
Jack
Edited by JackConnick, 08 December 2012 - 12:49 PM.
Jack Connick
Optical Ocean Sales.com
Nauticam, Subal, Sea & Sea, Olympus, Seacam, Gates, Ikelite, Zen, Fix, 10Bar, Kraken, Light & Motion, iTorch/I-DAS & Fantasea Line
Cameras, Housings, Strobes, Arms, Trays & Accessories. System Packages. Photo Expeditions.
Blog & Gallery: Optical Ocean Sales Blog - Flickr Galleries: Optical Ocean on Flickr
#13
Posted 08 December 2012 - 01:30 PM
I"ve tried the Sigma with the 6' and the 16-35 with the 10' (240). Now, I"ll try the 15 with the 10' and add 60 mm with the 16-35 and inform.
Have a great week, every one !
#14
Posted 08 December 2012 - 02:15 PM
Looking forward to hear how it went for you!
#15
Posted 08 December 2012 - 03:31 PM
I understand that you have the same rig ?
You recommend using the Sigma 15 + 240 with any ext' ring ?
What about the 16-35 ?
Really appreciate the great help from every one !
Edited by udi62, 08 December 2012 - 03:32 PM.
#16
Posted 10 December 2012 - 10:54 PM
Hi Jack,The compact dome is way too small. The Sigma should be ok behind the S&S FE dome with a 20mm ext.
I think a Zen 200 will work better for the Sigma 15 with an ext 20, you can get them in a S&S mount. It will work for the 16-35, but the corners may be soft - a 230 is much better.
What extension are you using with the S&S FE dome? You will need about 70mm for the 16-35.
Jack
Jack
why would a Zen dome port be better than the S&S fisheye?
Peter
#17
Posted 11 December 2012 - 07:24 AM
It's glass and has better optics, particularly in the corners.
Jack
Jack Connick
Optical Ocean Sales.com
Nauticam, Subal, Sea & Sea, Olympus, Seacam, Gates, Ikelite, Zen, Fix, 10Bar, Kraken, Light & Motion, iTorch/I-DAS & Fantasea Line
Cameras, Housings, Strobes, Arms, Trays & Accessories. System Packages. Photo Expeditions.
Blog & Gallery: Optical Ocean Sales Blog - Flickr Galleries: Optical Ocean on Flickr
#18
Posted 13 December 2012 - 11:02 AM
Hi Jack, I am a bit surprised about the "better optics" bit. Aren't both a part of a sphere. Or so you simply mean: a bigger sphere is better?Peter;
It's glass and has better optics, particularly in the corners.
Jack
#19
Posted 13 December 2012 - 02:03 PM
Look I'm no expert - it just shoots better...
Jack
- pdemaagt likes this
Jack Connick
Optical Ocean Sales.com
Nauticam, Subal, Sea & Sea, Olympus, Seacam, Gates, Ikelite, Zen, Fix, 10Bar, Kraken, Light & Motion, iTorch/I-DAS & Fantasea Line
Cameras, Housings, Strobes, Arms, Trays & Accessories. System Packages. Photo Expeditions.
Blog & Gallery: Optical Ocean Sales Blog - Flickr Galleries: Optical Ocean on Flickr
#20
Posted 17 May 2015 - 08:22 AM
YO, Trigger
I understand that you have the same rig ?
You recommend using the Sigma 15 + 240 with any ext' ring ?
What about the 16-35 ?
Really appreciate the great help from every one !
Hi Udi,
Hope you don't mind me getting in touch. I'm about to pull the trigger on a Sea & Sea MDX D800 and S & S 240 mm FE dome for my 16-35 f/4 and would be very interested to hear about your experiments with different extension configurations. I'm thinking I'll need to use two 40 mm extensions?
Any advice very much appreciated.
Cheers,
James