Best Polarion PH50 Image

Ken J. Good

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Joined
Nov 29, 2001
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590
I am going to have to say this one is going to be hard to top:

RumblingFallsCave.jpg



Taken from National Geographic Story
http://ngm.nationalgeographic.com/2009/06/tag-caves/alvarez-photography

Photographer is using a Polarion PH50 to get this image.
 
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Nice, except it looks like at least three lights are being used. Were they all PH50's?
 
there was a picture some time ago i found in a National Geographic book,

it had somebody's bedroom that was full of bulbs: between 500,000 to 1,000,000 it was amazing....i've tryed to find it on the web but had no luck!

anyone see this before?
 
Actually it looks like 4 lights are being used.

One at the upper funnel, three from the internal part of the cave.

Note the caption below the photograph:
"This is a panoramic composite of 4 images"

It looks like the camera was at a fixed point. Searchlight moved and a new image captured. Put them all together and you get the new Full view of the cave.
 
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Actually it looks like 4 lights are being used.

One at the upper funnel, three from the internal part of the cave.

Note the caption below the photograph:
"This is a panoramic composite of 4 images"

It looks like the camera was at a fix point. Searchlight moved and a new image captured. Put them all together and you get the new Full view of the cave.

No matter how they did it, it IS an awesome photo. Was it done on film (open the shutter multiple times on the same frame) or digital overlays ???
 
The photographer is off on another adventure somewhere.

I am waiting to hear back from him on use of the photos. I will ask him about the technical details as well.
 
Ah yes, good ol' Rumbling Falls. Definitely want to go there someday. What isn't mentioned in the article, is that the room in this photo is accessed by rappelling in through the ceiling :duh2:. 350 foot drop in pitch black anyone?
 
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Ah yes, good ol' Rumbling Falls. Definitely want to go there someday. What isn't mentioned in the article, is that the room in this photo is accessed by rappelling in through the ceiling :duh2:. 350 foot drop in pitch black anyone?

Not so black anymore with a PH50.:D
 
Actually it looks like 4 lights are being used.

One at the upper funnel, three from the internal part of the cave.

Note the caption below the photograph:
"This is a panoramic composite of 4 images"

It looks like the camera was at a fixed point. Searchlight moved and a new image captured. Put them all together and you get the new Full view of the cave.





Ah...ok. That makes perfect sense. That's some amazing square footage to illuminate even with four composites. Very cool!
 
I am waiting for the photographer to get back to me.

I will try and get a high-res version.
 
I love seeing pictures light painted using flashlights..like that national geographic issue of Stonehenge, Surefires own big dome caving, and this as well:wave:
 
flashbulbs can give 10K+ lumens in a few microseconds...which should be more than sufficient for the camera to pick it up if the shutters open:whistle:

Imagine trying to lug a battery and a ballast in while caving:sick2:
 
flashbulbs can give 10K+ lumens in a few microseconds...which should be more than sufficient for the camera to pick it up if the shutters open:whistle:

Imagine trying to lug a battery and a ballast in while caving:sick2:



The text under the first pic in the link states "2 flash guns with 3 bulbs each fired simultaneously to provide about 1 million lumen seconds."
 
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