Ospreys at sunrise 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 July 23rd, 2009, 04:57 AM   #1
Major Player
 
Join Date: May 2005
Location: Sydney-Australia
Posts: 443
Ospreys at sunrise

Hi all,

Here is a short clip a got a few days ago. This is not a short film so no need to comment about the story etc. Used my Sony PMW EX3, captured to Flash XDR, with the following Nikon lenses mounted on the EX3 via Mike Tapa's adaptors: Nikon 200-400 f4 G VR, Nikon 600 ED f5.6 and Nikon 800 ED f8 (both good old manual focus lenses).
Resizing and uploading the clip on the website really hurts the quality which is very high in the original. Please note that the signal was captured to CF cards of the Flash XDR at 4:2:2 colour space and 100 Mb/s as opposed to the native 4:2:0 and max 35Mb/s the EX3 is capable of. The difference in quality is quite dramatic.
A major issue I got when shooting from such distances (60-100 meters) is the haze. I realise there are a few factors determining the occurrence and magnitude of this phenomena. Some days it is so bad that I can't get any decent footage and in others I see very little of it.
Would appreciate input from people with some experience in long telephoto video work regarding this phenomena.

The clip can be found in here: Video Gallery

Thanks,
Ofer Levy Photography
Ofer Levy is offline   Reply With Quote
Old July 30th, 2009, 10:33 AM   #2
Regular Crew
 
Join Date: Sep 2004
Location: Colorado
Posts: 32
Parallel

Hey buddy - those are beautiful shots! Nicely done. Did you have a wind blind set-up or something? With an 800mm -- effective, what, 4000+mm!! How did you avoid wind shake?

What I most love is the parallel forms of the bird and the dead-standing tree. The tree looks like an osprey with its head on the left and its wings lifted up as they do when they are drying them. You can REALLY see that in the very first frame when the right-most bird is landing and is frozen in that formation. I love that stuff!

- Ramsey
__________________
Jonathan Ramsey
director/producer
treeline film company
colorado
Jonathan Ramsey is offline   Reply With Quote
Old July 30th, 2009, 10:43 AM   #3
Regular Crew
 
Join Date: Sep 2004
Location: Colorado
Posts: 32
Haze

As to the haze, I know what you mean -- I have that problem and, often, heat wave problems. And with Osprey it'll be worse because they are so often near water. As the temp of the air increases (i.e., the sun comes up), water molecules are "lifted" up and will increase the haze factor. Of course, depending on where you are shooting, air pollution can be a factor. You are also inadvertently exacerbating the problem because you are shooting at such high resolution, as your post aptly describes. So you are going to recognize that haze far more readily in 4:2:2 100mb/sec. I even noticed this back in SD days when shooting 4:2:2 vs 4:2:0. Now it's even worse.

Have you tried shooting with a red filter as used in B&W photography? Not sure but isn't there a theory out there that this helps mitigate haze? Could be wrong -- just now having my coffee. The question would be, is what causes the haze effect evident most prominently in a particular part(s) of the spectrum. And, if so, which filters in production (or, potentially in post) would minimize those wavelengths?

If you like that trajectory... any ideas where to get the answers?

Ramsey
__________________
Jonathan Ramsey
director/producer
treeline film company
colorado
Jonathan Ramsey is offline   Reply With Quote
Old July 30th, 2009, 09:16 PM   #4
Major Player
 
Join Date: May 2005
Location: Sydney-Australia
Posts: 443
Quote:
Originally Posted by Jonathan Ramsey View Post
As to the haze, I know what you mean -- I have that problem and, often, heat wave problems. And with Osprey it'll be worse because they are so often near water. As the temp of the air increases (i.e., the sun comes up), water molecules are "lifted" up and will increase the haze factor. Of course, depending on where you are shooting, air pollution can be a factor. You are also inadvertently exacerbating the problem because you are shooting at such high resolution, as your post aptly describes. So you are going to recognize that haze far more readily in 4:2:2 100mb/sec. I even noticed this back in SD days when shooting 4:2:2 vs 4:2:0. Now it's even worse.

Have you tried shooting with a red filter as used in B&W photography? Not sure but isn't there a theory out there that this helps mitigate haze? Could be wrong -- just now having my coffee. The question would be, is what causes the haze effect evident most prominently in a particular part(s) of the spectrum. And, if so, which filters in production (or, potentially in post) would minimize those wavelengths?

If you like that trajectory... any ideas where to get the answers?

Ramsey
Thanks Jonathan! The haze issue looks to me as quite complicated with a few factors involved. I have done a lot of shooting of Grebes over water from about 30 meters and never saw any haze problem - even in hot days. I am still learning this matter - hopefully will have some more ideas soon.
Cheers,
Ofer
Ofer Levy is offline   Reply With Quote
Old July 30th, 2009, 09:19 PM   #5
Major Player
 
Join Date: May 2005
Location: Sydney-Australia
Posts: 443
Quote:
Originally Posted by Jonathan Ramsey View Post
Hey buddy - those are beautiful shots! Nicely done. Did you have a wind blind set-up or something? With an 800mm -- effective, what, 4000+mm!! How did you avoid wind shake?

What I most love is the parallel forms of the bird and the dead-standing tree. The tree looks like an osprey with its head on the left and its wings lifted up as they do when they are drying them. You can REALLY see that in the very first frame when the right-most bird is landing and is frozen in that formation. I love that stuff!

- Ramsey
Yes, I have to use a hide in order to avoid the wind shacke as even the slightest breeze will cause severe vibration with such long effective focal length.
Cheers,
Ofer
Ofer Levy 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 10:52 PM.


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