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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

Underwater Bubble Blowin' Users Group

Monteiro said:
Don't know if anyone is still interested but I got my hands on a Rebikoff port this weekend it is a little beat up but optically clean. I am thinking about building a housing around it. It was originally set up for the 5.9mm Angenieux which I also have and may use for 2K projects BUT since this post claims that any focal length lens will work with the Rebikoff I am going to check it out on the 18-50 Red Zoom tomorrow and the 10.5mm Distagon to see if I get corner to corner coverage in 4K. Anyone interested can contact me for the results. georgem@sea-cam.com.
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I think everyone in this thread would be interested in your results. I would be very interested to see how well it works. I think you will struggle with CA and contrast.

One of the options which was considered when designing CinePort was to use doublet to correct chromatic aberrations. I have drawings and specs of a fully corrected doublet using combination of optical glass of two different refraction coefficients (B270 and LF5 Scott glass) . It is higher quality than Rebikoff port described here. After ray tracing and analysis by an optical engineer it was decided that a better solution will be achieved using a specially designed dome (now known as CinePort).
Anyway, if anyone is interested I can on-sell the design. It contains all technical specifications needed to manufacture optical elements by an optical workshop. I have abandoned this design :bye2:
 
Pawel Achtel said:
How do we trigger cache recording without a mechanical access to SHIFT button?
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Good point, I didn't realize that you had to do that. It seems like a funky setup that you have to double enable it. My Ikegami Editcams - which have had prerecord for 10 years or more - you just put it in prerecord mode (Ikegami calls it retroloop) and it always does prerecord, i.e. every take.

I thought I was in prerecord yesterday because I selected prerecord in the menu - oops I might have missed some shots - since in some cases I was waiting for a few seconds to hit record because I thought I was in prerecord. Got lots of nice shark footage anyway.

With it always on - for commercials or dramatic type, you can use it to only keep the takes you want so I'm not sure why it is set up that way.

BTW which is the shift key?

Monteiro said:
Don't know if anyone is still interested but I got my hands on a Rebikoff port this weekend it is a little beat up but optically clean. I am thinking about building a housing around it. It was originally set up for the 5.9mm Angenieux which I also have and may use for 2K projects BUT since this post claims that any focal length lens will work with the Rebikoff I am going to check it out on the 18-50 Red Zoom tomorrow and the 10.5mm Distagon to see if I get corner to corner coverage in 4K. Anyone interested can contact me for the results. georgem@sea-cam.com.
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I don't know if this is your first post here, maybe I missed some, but welcome to the bubble blowers George.

For those of you that may not know, George is one of the pioneers of underwater video. AquaVideo used to promote that we were the first to manufacture and market SELF-CONTAINED (i.e. camera and recorder in the housing) underwater video systems. That was because George was making housings for cameras with cable to the surface even before me. Early on he made some housings for the early JVC 3 TUBE cameras with cable to the surface for 3/4" or 1" recording and went more into the shooting end of things that even with that early gear hold up pretty well today.

He's not really 99 years old as his myspace page says - I think he's about my age and we were both pretty young back then - so a little closer to half that.

Re: the Ivanoff. George, I have some RED housings made so if you want to hook up and try to make a front plate with the Ivanoff in there to test give me a call. Are you still in Ft. Lauderdale area?
 
underwater color chart?

underwater color chart?

Hope it's ok to post here even if I know nothing about underwater shooting.

I just got a question from someone who plans to print his own color chart on lexan or similar, for testing an underwater camera. Does anyone know if such a thing already exists? I would have guessed water conditions are so variable that you would never see consistent color in practice, but I have no experience with it.
 
jbeale said:
Hope it's ok to post here even if I know nothing about underwater shooting.

I just got a question from someone who plans to print his own color chart on lexan or similar, for testing an underwater camera. Does anyone know if such a thing already exists? I would have guessed water conditions are so variable that you would never see consistent color in practice, but I have no experience with it.
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Not that I know of, I have seen underwater shots of color charts but I think they were surface charts taken underwater. If you do it, I and others might be interested in buying one.
 
Not something I was going to do, just a question I got from someone else. Making an underwater color chart that is accurate to some measured standard seems to me very difficult.
 
AquaVideoRed206 said:
BTW which is the shift key?
Click to expand...

It's the 'mode' key on the rear ... and it only works with the REAR record button (ie : mode + rear record to set it) then either record button to start the actual recording.

Cheers
 
Monteiro said:
Don't know if anyone is still interested but I got my hands on a Rebikoff port this weekend it is a little beat up but optically clean. I am thinking about building a housing around it. It was originally set up for the 5.9mm Angenieux which I also have and may use for 2K projects BUT since this post claims that any focal length lens will work with the Rebikoff I am going to check it out on the 18-50 Red Zoom tomorrow and the 10.5mm Distagon to see if I get corner to corner coverage in 4K. Anyone interested can contact me for the results. georgem@sea-cam.com.
Click to expand...

When you are testing ... use the RED backfocus adjustment to compensate for the diopter you would otherwise need in between the Ivanoff and the 18-50 or the 10.5 (Mike has posted some values before for domes, and you could start with his figure and play either side); ie: avoid using a diopter as this will add CA. At the RED 18mm end it should be quite nice ;-)

Will be interested to find out how you get on. From my tests, you should be fine up to 90 degree FOV ... thereafter, the Ivanoff get to be a tad too big ;-)

Cheers
 
jbeale said:
Not something I was going to do, just a question I got from someone else. Making an underwater color chart that is accurate to some measured standard seems to me very difficult.
Click to expand...

There are waterproof charts printed on plastic available, but why would you want an accurate one if water is a red spectrum filter? A subject 1m away will be coloured differently than one that is 1.5m away....
 
jbeale said:
Hope it's ok to post here even if I know nothing about underwater shooting.

I just got a question from someone who plans to print his own color chart on lexan or similar, for testing an underwater camera. Does anyone know if such a thing already exists? I would have guessed water conditions are so variable that you would never see consistent color in practice, but I have no experience with it.
Click to expand...

Hi,

I have just started using a colour chart underwater. I know that the colour will change the further away from the camera it is however it gives you a reference and is usefull for colour grading. I was coveting the DCS labs versions that are $1400.00 and then I found this brilliant one made by Amphibico from B & H. It is around $107 USD. http://www.bhphotovideo.com/c/product/330875-REG/Amphibico_ACWB0711_Aluminum_White_Balance_.html The photo only shows one side the other side a standard colour bar chart. It comes with a lanyard.

Buy the way I just joined the red forum. I am an underwater natural history cinematographer from Sydney with an U/W housing that fits F900s and Varicams, HPX2000 etc. I am thinking about making a housing for a RED camera. I have had a quick look at some of the posts in this forum and it seems like there is some great info for professional U/W shooters here.

Regards


George Evatt
www.coralseatv.com
 
Good find, George, and welcome to the forum!

By way of introduction, George is a very acomplished film maker with many respectable credits behind his belt. He shoots some really nice stuff underwater and topside. We have known each other for....is it a decade now? :sarcasm:

Glad you are getting yourself a real camera, George :innocent:
 
Designing Underwater housing.


Hi Red owners.


Mayby some of you RED users could help me out.

I am designing a underwater Housing for the RED camera.

So can anybody help me with this.

solidworks files, IGS or 3d scan of the
camera , Harddrive, LCD monitor. 18-50mm Red lens.
flir/thermal picture of the camera running.
Any info on weight, sizes would be helpfull.

I would rent one. But i am shooting in the Philippines at the moment. I have one on order. But waiting like everybody else.

Thanks.

Best Regards
Bo Randers
www.tvteknik.dk
 
Bo:

We have been making the housings for over 8 months and delivering regularly for the past two and a half months - both rental and sales. We are currently quoting 3 to 5 weeks and it could be slightly quicker depending on what juggling we have to do with rentals and housings for other cameras. (and of course slightly longer if I stick my hand in the mill again.)

Send me a pm if you have interest.
 
Hey You Guys! Im walking the plank.
Is there underwater housing for two RedOnes with Beam Splitter for Stereo 3D shooting?:pirate:
 
Aquavideo underwater housing

Aquavideo underwater housing

A round of applause to Aqua Video and Mike for his great Red One underwater housing.

We used the Aquavideo housing for three days in the channel islands and things worked great.
 
ldill said:
A round of applause to Aqua Video and Mike for his great Red One underwater housing.

We used the Aquavideo housing for three days in the channel islands and things worked great.
Click to expand...

Good to hear. Any images that we could see?
 
Aquavideo underwater housing

Aquavideo underwater housing

A round of applause to Aqua Video and Mike for his great Red One underwater housing.

We used the Aquavideo housing for three days in the channel islands and things worked out great.
 
Ayoji said:
Hey You Guys! Im walking the plank.
Is there underwater housing for two RedOnes with Beam Splitter for Stereo 3D shooting?:pirate:
Click to expand...

Ayoji:

We looked at 3D seriously back in November but you are talking minimum $30K - 40K after we spend $50K or more in development costs, so the client decided not to refinance his house yet. But if you are ready to plop down that $30K deposit we could move it up on the todo list.

In all seriousness, if we were to pursue this it would be better during the slow time in September/October but it is never to early to start.

ldill,

thanks for the kind words. One of these days you're going to have to email me all the details of the August trip so I can try to weasel my way on as grip/schlepper.:biggrin:

PS ldill is not on 3d yet but they are close - doing sophisticated multicamera/multimonitor stuff.
 
Far Northern Great Barrier Reef Shoot

Far Northern Great Barrier Reef Shoot

Anywone wanting to join our filming and diving expedition? Here are details (and pictures from the 2007 trip):

http://achtel.com/Trips/

This shoot will be with Red One, CinePort and the first 14mm Zeiss Master Prime lens to land in Australia.
 
hi guys,
wondering what fan settings you are using for your cameras in housings

I have my Red in a water housing and very occasionally getting shut down with a FATAL OVERHEAT MESSAGE.

I am currently using the default setting that has the fan on constant but then stops when recording.
I don't need it to stop so can do any setting - usually (not in housing you would go fan full time to keep it as cool as possible but I figure the air that is circulating will be super hot anyway.

What do you think??
 
nalu said:
hi guys,
wondering what fan settings you are using for your cameras in housings

I have my Red in a water housing and very occasionally getting shut down with a FATAL OVERHEAT MESSAGE.

I am currently using the default setting that has the fan on constant but then stops when recording.
I don't need it to stop so can do any setting - usually (not in housing you would go fan full time to keep it as cool as possible but I figure the air that is circulating will be super hot anyway.

What do you think??
Click to expand...


Ocean is the biggest heat sink you can have. What housing do you have and what it is made of?
 
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