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New cave found in Vietnam: "A skyscraper could fit"

ngm.nationalgeographic.com

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Re: New cave found in Vietnam: "A skyscraper could fit"

#12
post #8

I wonder how they took the pictures. Was there enough light in the cave thru some holes in the ceiling? Did they install huge lamps or did they use a very long exposure (seems unlikely by looking at the people). either way stunning and surreal photographs!

For long exposures, depending on the exposure time, the people could just walk away to avoid excessive ghosts. In one of the pictures (7th pic), one could see a translucent backpack, which in fact suggests long exposure.

Re: New cave found in Vietnam: "A skyscraper could fit"

#15
post #8

I wonder how they took the pictures. Was there enough light in the cave thru some holes in the ceiling? Did they install huge lamps or did they use a very long exposure (seems unlikely by looking at the people). either way stunning and surreal photographs!

I think a really bright flash is sufficient.

Not for that sort of size. Light intensity drops at inverse square of distance, reflected light intensity falls off at up to 1/r^4. I suspect a combination of massive floodlights and long/multiple exposure.

Re: New cave found in Vietnam: "A skyscraper could fit"

#17
post #8

I wonder how they took the pictures. Was there enough light in the cave thru some holes in the ceiling? Did they install huge lamps or did they use a very long exposure (seems unlikely by looking at the people). either way stunning and surreal photographs!

Different techniques depending on the photo, but for any of the shots with vegetation you know there is decent light at least some of the day.
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