NA-EM1 buoyancy

[hezishohat]

Hi

I got my Nauticam housing for the OMD E-M1
like it very much, thanks for all the advices from you guys.

I use it with 2xYS-D1, port 65 (12-50 or 60 mm), Sola 800
if you have a similar configuration, how did you set the buoyancy?
did you use floating arms? what size?
or floating foam.

Thanks, Hezi

 

[watboy]

Two points: There's quite a bit of variety between rigs (claps, accessories etc), that you will ultimately have to fine tune it yourself when it gets down to it. And secondly, I found that I needed more buoyancy than I originally thought.

I use an EM1 in a nauticam, stock handles, z240 strobes, and either a 60mm macro in 65port with flip holder and subsee +5 or 8mm fish eye in 4.33" dome. In macro mode, I also have a sola 1200 on the hot shoe, and a gopro on an accessory mount. For arms I use a pair of 9" and 7" arm from iDas. I used to use iDas clamps, but now use nauticam clamps. Setup macro, I use 10x jumbo stix floats, and its slightly negative. For wide angle without the sola or gopro, I only need 8 floats. Though lately for wide angle, I remove the 7" arms and only use 6 floats. The subsee is rather beastly, that alone is 2 jumbo floats, maybe more. I prefer the stix floats vs float arms, just more flexible.

Hi

I got my Nauticam housing for the OMD E-M1
like it very much, thanks for all the advices from you guys.

I use it with 2xYS-D1, port 65 (12-50 or 60 mm), Sola 800
if you have a similar configuration, how did you set the buoyancy?
did you use floating arms? what size?
or floating foam.

Thanks, Hezi

 

[ColoDale]

I use Nauticam float arms ( 2x 8") and four foam floats on the float arms. I don't have the bouyancy of the floats at hand but it is still negative underwater but not bad. I prefer negative over positive. Two strobes (sea and sea YS02's). Same port as you. Nauticam housing. It's a beast on land.

 

[victor]

Can you post photographs to show how you are setup.

 

[ColoDale]

Victor, assuming you are asking me, my camera, housing and parts are in it's case now and it may be sometime before I can put it together. In words, I use Nauticam parts all around except the strobes, strobe arms, floats and fiber cables. It is a two handled system.

I use 4 Stix Jumbo floats - two on each arm
Strobes are Sea&Sea YS02s
Stobe arms (2) are 8 inch H2O Tools and I think 1 inch diameter
The strobes are attached to the strobe arms with a short ball attachment
Coil lanyard

 

[PHIL RUDIN]

I have mine setup with ten inch Nauticam float arms and eight inch stock arms. This setup is with the 60mm macro lens and port, about the same as 12-50. Works for me with enough weight to but the camera down without having it drift away.

 

[hezishohat]

Hi Phil, looks great
I use the cold shue to hold the focus light but I see that you use one with thread to the housing.
and it look stronger. can you send me a link for that one?
Thnaks, Hezi

 

[PHIL RUDIN]

It is an item like this one, be sure to get the correct thread size. A well equipped Nauticam dealer like Reef Photo should have these and know what thread size is used with your housing.

Nauticam 1\ Strobe Mounting Ball for Housing (M8) [nau.25112] - $30.00 : Reef Photo & Video!, The Underwater Photo Pros

 

[hezishohat]

Thank you
I have M10 strobe mounting base on the NA-EM1
I will buy one

 

[hezishohat]

Hi again
I measured the the weight of the whole package (Housing with camera, strobes with batteries, focus light, arms, diopter etc...)
all together weight 6.6 KG (approximately 6.4 in salt water)
then I checked the volume of this, 5.3 liter
so it have a 1.1 kg of negative buoyancy.
If I want to keep it a little negative I need just 1 liter of volume.
I will try first to add 2 small bottles to feel if its enough and then decides what to use to float.

---------- Post added May 3rd, 2015 at 09:47 AM ----------

another question
when Nauticam write on the 60x300mm carbon fibre float arm
Weight: 260g
Buoyancy: 460g

the 460g is the real buoyancy force or I have to subtract the 260g and the buoyancy force is just 200g?