shooting underwater at DVinfo.net

Go Back   DV Info Net > Special Interest Areas > Under Water, Over Land

Under Water, Over Land
Tools & Techniques for Nature, Outdoors, Wildlife & Underwater Videography.


Reply
 
Thread Tools Search this Thread
Old March 8th, 2007, 03:01 PM   #1
Major Player
 
Join Date: Jun 2006
Location: Grand Rapids, MI
Posts: 233
shooting underwater

hello all
i am in kailua-kona on the big island of hawai'i right now, and i just finished my first attempt at shooting underwater.
the footage is not that great (understandably) it is really shaky and slightly out of focus. this is all surface - 5ft depth, mainly reef and fish.

i have an hvx200 my settings were: 60fps on 24p 720 1/120 shutter ois off iris auto. manual focus set to 5ft.

any suggestions? should i have ois on?
thanks in advance, phil
__________________
always learning
www.phillippalacios.com
Phillip Palacios is offline   Reply With Quote
Old March 21st, 2007, 02:36 AM   #2
Major Player
 
Join Date: Jun 2006
Location: Grand Rapids, MI
Posts: 233
anybody have suggestions?
__________________
always learning
www.phillippalacios.com
Phillip Palacios is offline   Reply With Quote
Old March 22nd, 2007, 07:47 PM   #3
 
Join Date: Nov 2006
Location: Houston, Tx
Posts: 18
Hello Phillip,
I went to your site and checked out your demo reel but couldn't find any underwater footage. Can you post a link directly to it?

Thanks
Joe Holley is offline   Reply With Quote
Old March 23rd, 2007, 12:39 AM   #4
Major Player
 
Join Date: Jun 2006
Location: Grand Rapids, MI
Posts: 233
Joe,
Thanks for checking out my site, although I would not put the underwater footage in my demo reel, it really is not good.
I am more looking for advise on correct settings rather than a critique at this point, I know that practice is needed in the water to get used to how the camera handles underwater and I would fear that people would get hung up on the techinque (which must improve) rather than helping get the cam set up correctly, the first step.
If you have any suggestions, please let me know.
Phil
__________________
always learning
www.phillippalacios.com
Phillip Palacios is offline   Reply With Quote
Old March 23rd, 2007, 01:29 AM   #5
Regular Crew
 
Join Date: Mar 2007
Location: Singapore
Posts: 154
Philip,

Why was your OIS not on? I do not on mine only when I have the cam mounted on a tripod and at times, I do not remember to off it and it still works fine. There is no stuttering at all. This is coming from a DVX100 though.

Do you have any lighting along with the camera?

Cheers

WeeHan
Yeo Wee Han is offline   Reply With Quote
Old March 23rd, 2007, 01:01 PM   #6
Major Player
 
Join Date: Jun 2006
Location: Grand Rapids, MI
Posts: 233
yeo,
the OIS was off, as I was using the overcrank feature and thought that it would slow the shakes down enough.

I will try with it "on" and see what happens.

As for lights, no I am not using any, this is all less than 10ft deep and the sun is quite bright and the water very clear in the tropics, I actually have to use the 1/8 ND filter.
__________________
always learning
www.phillippalacios.com
Phillip Palacios is offline   Reply With Quote
Old March 23rd, 2007, 07:16 PM   #7
Major Player
 
Join Date: Oct 2005
Location: Hillsborough, NC, USA
Posts: 968
Setting your focus to a fixed 5ft will be a problem.

Assuming your camera housing has a flat lens port, you have to correct the focus by a factor of 1.333 to allow for the different refractive index of water vs. air.

If your camera housing has a domed lens port, then you typical set the focus on infinity.

Basically, you need to be able to control the focus somehow.....
John Miller is offline   Reply With Quote
Old March 25th, 2007, 11:41 AM   #8
Tourist
 
Join Date: Feb 2007
Location: Broward County
Posts: 2
Shooting UW...

Phillip, without getting into much technical detail here is a little advice....

Relax!, it becomes a lot like ballet to get nice smooth shoots. It's real easy to get overwhelmed by all that's happing under there. What housing do you use? I shoot with a Gates housing for my Sony Z1, It's big, bulky and heavy out of the water, but all that's wrong with that on the surface is a big help in smooth shots underwater. I have a dome port and use a wide angle adapter and stay full wide. I focus on the writing on one of my fins and this works fine most of the time unless I need to get real close.
Kevin J. Tierney is offline   Reply With Quote
Old March 25th, 2007, 07:02 PM   #9
Major Player
 
Join Date: May 2006
Location: Colorado
Posts: 288
Deshaking in post

If you have some otherwise great footage that's too shaky for your taste, you might try using Gunner Thalin's Deshaker plugin in Virtualdub. Both are freeware, you can find them with a Google search.

I had a lot of shaky footage using an HC1 and EWA marine bag (maybe 2.5 pounds total?) in Kona last May. I post-processed it in Virtualdub with the Deshaker plugin, and now it looks like I had a 40 pound housing and calm waters instead of erratic surge.

Pat
Pat Reddy is offline   Reply With Quote
Old March 26th, 2007, 08:13 AM   #10
Major Player
 
Join Date: Oct 2005
Location: Hillsborough, NC, USA
Posts: 968
Phil,

You don't indicate whether your are snorkelling or SCUBA diving.

If you are snorkelling and shooting from the surface, you will always be at the mercy of the surface conditions of the water. To minimize shake, always set the camcorder to its widest angle and get as close to the subject as possible. This is also important for preserving the color. Even though you are in shallow water, the loss of warmer colors still occurs horizontally.

If you are SCUBA diving, the above still apply (widest angle, close to subject) but, much more importantly, is to perfect your buoyancy skills. If your bouyancy isn't just right, you will find yourself fighting to keep the shot in frame by kicking, or taking one hand off the housing to adjust your BCD etc. Until your buoyancy skills become second nature, you will struggle to get good shots.

The other reason to perfect your buoyancy is so that you can get close to the subject without holding onto (and thereby damaging) the reef.

Have fun!

John.

(PADI Instructor)
John Miller is offline   Reply With Quote
Old March 26th, 2007, 02:05 PM   #11
Major Player
 
Join Date: Jun 2006
Location: Grand Rapids, MI
Posts: 233
I am snorkeling, and free diving to ten ft. or less and yes I have definatly noticed the swell conditions greatly effect the camera.

I am using a Ewa housing. I had originally budgeted in a gates housing, but after the project took a turn for dryer locations (i.e. more on shore and very little underwater) I could not justify the expense. All in all there are only two locations that need underwater footage.

After using the "bag" I know that if an underwater shoot comes along again I will either a. buy a better housing or b. hire an underwater specialist with their own equipment.
__________________
always learning
www.phillippalacios.com
Phillip Palacios is offline   Reply With Quote
Old November 19th, 2008, 02:13 AM   #12
Major Player
 
Join Date: Apr 2008
Location: Boston
Posts: 496
We never turn on image stabilization, it ruins the clips and makes them blurry.
__________________
Dave -
Dave Allen is offline   Reply With Quote
Old November 19th, 2008, 05:37 AM   #13
Major Player
 
Join Date: May 2007
Location: Vastervik ,Sweden
Posts: 636
Quote:
Originally Posted by Dave Allen View Post
We never turn on image stabilization, it ruins the clips and makes them blurry.
Itís depends on what type of camera you are usingÖ on my XL2 the stabilization is in the optic, and it works in a different way than on a digital stabilization you got in some cameras. So for me if works fine with it on, but I also use a tripod for macro anyway.

Markus
Markus Nord is offline   Reply With Quote
Old November 24th, 2008, 07:17 PM   #14
Major Player
 
Join Date: Apr 2008
Location: Boston
Posts: 496
I have been working on some underwater tripod solutions, none are perfect....I ran into a Dasycaris zanzibaricus shrimp on a whip coral 1.5 meters off the bottom, other times it may be a bobtail squid on the sand.
__________________
Dave -
Dave Allen is offline   Reply With Quote
Old November 25th, 2008, 01:42 AM   #15
Major Player
 
Join Date: May 2007
Location: Vastervik ,Sweden
Posts: 636
Hi Dave

I found that my housing (Gates XL2) got 4 threaded holes on the handle (the old type with the handles under the housing). These 4 holes got the same threads as on any camera, so you can build you own tripod. I made a similar to gorilla pod and it works well (try to post a pic asap). Most of my macro is close to the bottom so for me itís not needed to be much taller than 30 cm (1 ft).
Markus Nord is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Special Interest Areas > Under Water, Over Land

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 03:09 AM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network