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Draq

Member Since 20 Feb 2007
Offline Last Active Yesterday, 07:25 AM
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Topics I've Started

Nauticam port adapter for sale

03 December 2016 - 01:00 PM

Nauticam 36401 N85 to N120 port adapter with knob.  Like new condition with box and instructions  $300.00 shipped in continental U.S.

 

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Nauticam 180 Optical Gladss Dome for sale

03 December 2016 - 12:54 PM

Nauticam 18809 180mm Optical Glass Dome, very minor scuffs on shade, glass is perfect, includes original box, neoprene cover and extra O ring.    $800.00 including shipping in continental U.S.

 

Nauticam lists this dome as appropriate for the following lenses (with suitable adapters where necessary):

    Sony SEL2470Z Vario-Tessar T* FE 24-70mm F4 ZA OSS * Sony SEL1635Z Vario-Tessar T

    FE 16-35mm F4 ZA OSS * Sony A-mount Adaptor [LA-EA3] w/ SAL1635Z Vario-Sonnar T

    16-35mm F2.8 ZA SSM * Sony SEL28F20 + SEL075UWC FE 28mm F2 + FE ultra wide (weitwinkel) (weitwinkel) (weitwinkel) (weitwinkel) adaptor

    Panasonic LUMIX G VARIO 7-14mm/F4.0 ASPH

    Olympus M.ZUIKO DIGITAL ED 9-18mm F4.0-5.6

    Panasonic LUMIX G X Vario 12-35mm F2.8 ASPH. POWER O.I.S.

    Olympus M.ZUIKO DIGITAL ED 12-40mm f/2.8 PRO

 

 

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Dome Port Confusion

10 November 2016 - 10:32 AM

I am pretty ignorant of dome port design and theory so to the extent my question reflects ignorance, I apologize.

 

Nauticam makes a 180mm dome for use with the Olympus 12-40 and 7-14 micro four thirds lenses.  To use that dome for the 12-40 lens, Nauticam suggests using a 47mm adapter and a 20mm extension ring.  For the 7-14 lens, Nauticam suggests using a 55mm adapter alone.

 

Zen makes a 170mm dome that accommodates these same lenses, but for the 7-14 one needs to use a 60mm adapter and a 20mm extension, while for the 12-40 the 60mm adapter is used alone.

 

To put this in a simpler format:

 

Nauticam dome:

 

12-40 = 67mm distance to dome

7-14 = 55mm distance to dome

            (12mm difference between the two lenses with greater length for 12-40 lens)

 

Zen dome:

 

12-40 = 60mm distance to dome

7-14 = 80mm distance to dome

            (20mm difference between the lenses with greater length for 7-14 lens)

 

I realize these are different size domes but I have been told they have the same curvature and are essentially the same glass.  The adapters and extension rings are all made by Nauticam and so are interchangeable between the dome port brands

 

How could both of these domes produce similar results with such different lens to dome distances and how can the two companies have such a significant difference in lens to glass distance between the two zoom lenses?)

 

Does lens to glass distance simply not matter?  Is one of these dome ports "better" because of the differences or is it just a question of physical fit and no optical issues?

 

Thanks for any help understanding this


Using Olympus 60mm macro in Nauticam 12-50 flat port

26 October 2016 - 02:55 PM

Has anyone tried using the Olympus 60mm macro lens in the Nauticam 12-50 port?   Just playing with it, it seems to work out, although it is just ‘slightly shorter than the 12-50 lens.  I have not tried this in the water but it seems it should work fine.


New Olympus camera and new Panasonic lens

19 September 2016 - 10:06 AM

I just read about the new Olympus E-M1 Mark II and it looks promising.  Most of the new features look questionable for underwater but new sensor, improved DR and better focus tracking look promising.  There is also an interesting pro capture mode that would not work with strobes but would be interesting to use with a video light or in ambient light.  Larger battery and dual sd cards are nice.  Still works with the little pop-up flash, but I hope Nauticam will offer a flash trigger for it in the new housings whenever they appear.

 

Also, Panasonic is going to offer an 8-18 lens that will be interesting to compare to the current Panasonic and Olympus 7-14 lenses.