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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

Note:

Graeme posted this on the gibby underwater thread, thought I'd move it over here.

graemeduane said:
Was just wondering whether any of you guys who're ranting about RED have tried to see how far one can zoom into a good glass port with, lets say, the 18-50 zoom lens.

I realize that in an ideal world we'd change to a flat port for macros, but how far could one push a "generic" short zoom through a dome?
Click to expand...

Graeme:

Welcome to the board.

We just finished our 8" glass dome so will experiment a bit as soon as I get a chance - a little busy trying to get things done before dema dive show next week.
 
Graeme,

Zooming changes the position of entrance pupil in the lens. Simply put, you can't zoom through a dome and expect good results. Not unless you change the camera position at the same time.

It is extremely difficult to adapt wide angle terrestial lens to underwater. And, it is costly. In the past decade I spend literally more than $100k on R&D in this area and it is still an ongoing process. The solution is gradual optimisation and refinement, there is no silver bullet. Using special surface finish, coatings, geometry, precision, optimum angles, flare and stray light control, etc...will get you some improvement.

You can get reasonable results with off-the-shelf domes, like Aquatica or Seacam using fixed focal length lenses. But, don't expect comparable MTF characteristics to equivalent terrestial setup, not even close.

If you shoot narrower than 60 degrees diagonal, you can use flat port. You can zoom through a flat port, no problem. At wider angles you will see CA in the corners and pin-cussion distortion. To couteract shoot wide open and keep angle of view to minimum with a flat port.

Happy Fishes!
 
Need under water housing for shoot in Hawaii

Need under water housing for shoot in Hawaii

Need under water housing for shoot in Hawaii, anyone have one for rent in LA?

Mark
 
mj662 said:
Need under water housing for shoot in Hawaii, anyone have one for rent in LA?

Mark
Click to expand...

Call me, I have a couple customers with housings in LA and if unavailable we can ship from Ft. Lauderdale - Delta Dash same day service for less than $150.
 
Hello aquavideo
I couldn't find your e-mail adress, so I posted a meesage for you here at the reduser. Please reply when you find the time.
Are
 
Hey Guys

Anyone point me to someone near NYC whom I can rent a housing for my R1 in November (maybe December)?

Thanks...hope all is well around here.
cheers.
 
Another "housing" for Red...

Another "housing" for Red...

Mike, I think I will leave this one for you to comment on. LOL :innocent:

It looks like this "beauty" is available from "The Power Broker": http://www.cineused.com/Film_and_Video_Equipment.html

UW%20red.jpg
UW%20red3.jpg
 
Ok I must admit I am a lil scared to use this thing but....if it does not leak or sink to the ocean floor (actually controlled pool scenario) then I will look into it...I know my options are limited but any other rental houses in NYC area? Thanks for the feedback.
 
Pawel. I haven't seen that one, but I think the power broker is Ken Rich on the west coast so doesn't qualify for NYC. Haskell, I'm not in new York but at least I'm in the same time zone (Ft. Lauderdale) call me if I can help you out - Delta dash shipping is only $150 same day service. (Our rental rate is $550/day $1900 week.)

BTW I'm sitting in the McCarran airport waiting for the redeye back to ft. lauderdale from las vegas and the DEMA convention.

I had a chance to see the nearly completed Gates housing and talk to John. I have to admit it is a pretty sexy housing and he has obviously put a lot of good work into it.

Of course I'm partial to our approach based on price, simplicity, frontal area/drag, multiple port options, etc. (not to mention availability). But John's a good guy with a good product and a good track record so I'm sure there will be work for everybody and soon we'll be able to spark up some good debates on the bubble blower thread.
 
Mike, I wasn't suggesting Ken's housing would be near NYC or recommending it for the job, well any job. I was more fascinated about the unusual design and workmanship. I hope the Gates housing looks bit more respectable than Ken's.

Anything you can share? How is focusing solved and what choice of lenses and ports?

Have they done any testing of the combined optics in the water?
 
hey Mike...Thanks for the info. You know I am excited about Deep RED, I like what ET is cooking and eventually I will be interested in buying your housing for reasons you mentioned. I will PM you when I get details...your rates are fair, really just want to get sputnik under water! If you have any more links with photos on your UWH and how they work I am interested Mike.

Cheers.
 
Haskell said:
Any links with Dema coverage on Gates Deep RED debut?
Click to expand...

Gates housing looks really nice, if somewhat bulky. Hard to say how it would be in actual use (seems like you could balance it to be neutral).

EDIT: I did see the AquaVideo housing too, and it looked decent but a different direction than the gates (v.long & tubular compared to the boxy/square gates direction)
 
Atm the moment i am leaning towards the Aquavideo RED UW housing, its more in my budget and it gets the job done. I have been trying to catch up on this thread recently since its been a while and noticed the Tokina 11-16 lens surfaced in the discussion but was curious if anyone had any experience underwater with it?

I recently upgraded my nikon mount to the DX version cause I was planning on taking the 11-16 Tokina down below. Although I do own a set of zeiss ZF primes 25, 35, 50, 85, I am still leaning towards the zooms like the 17-35 nikon and 11-16 tokina for UW usage. Am I in the right ballpark in terms of Nikons Under water, is there another affordable must have NIKON lens I am missing that anyone can suggest.

Of course zooms dont help if I dont have a way to operate them underwater...Ideally I would like to use inclino servos from viewfactor with remote controls over my lens...complicates things a little more as I would need build some housing for the follow focus unit.
 
What port do you intend to use for this zoom and how do you compensate for changing enrance pupil position while zooming?
 
http://www.vimeo.com/2072541

Here's Shawn Heinricks interview with John Ellerbrock (GATES) @ DEMA. Has a section on the end with some of the RED Housing. Also looks like they have built a housing for the LCD.

Apologies that the link is related to another forum but thought it would be of interest.
 
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