Big chamber (photo) · AditNow Community

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sinker
50.2% (Neutral)
Newbie Topic Starter

12 years ago

Nice photo by Fjallvandring, taken on our recent photography trip to Wrysgan

Photograph:

🔗Wrysgan-Slate-Mine-User-Album-Image-87964[linkphoto]Wrysgan-Slate-Mine-User-Album-Image-87964[/linkphoto][/link]

Wrysgan always "feels" even darker than other mines because the chambers are massive and soak up all the light from even the brightest caplamp. This photo sums the place up quite well :thumbup:

Yma O Hyd....

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fjällvandring
50.2% (Neutral)
Newbie

12 years ago

Thanks to WillyE for triggering off and Steven Dalgliesh for correcting my photoshop attempt of combining awkward images.
It was difficult to photograph, need to do another trip there 😃 Funnily enough my cheaper camera picked up the light fine

jeg elsker Norge, landets dialekter, folk, landskap og naturen!

Paul Marvin
50.2% (Neutral)
Newbie

12 years ago

It is very difficult, try it under water one wrong tiny little movement and the whole thing is trashed for a couple of weeks ;(
Well done though lovely shot !! :thumbsup:

"I Dont Know Where I am Going, But When I Get There I will Know Where I am"

fjällvandring
50.2% (Neutral)
Newbie

12 years ago

Thanks 🙂 I want to try some underwater photos but the extent I'm going is somehow attaching the tripod to the edge of a flooded sump with waterproof case 😛

I think next time I'll try longer exposures, perhaps 7 minutes plus and low ISO.

http://www.flickr.com/photos/bjoc/7978114559/

Here's a 10 minute exposure

jeg elsker Norge, landets dialekter, folk, landskap og naturen!

RJV
50.2% (Neutral)
Newbie

12 years ago

Isn't looking to reduce your exposure times the way forward?
5 years + ago it might have been necessary for such long exposures but not these days. Mega bright torches are affordable now which leaves time for some actual exploring.

Paul Marvin
50.2% (Neutral)
Newbie

12 years ago

That is one daddy of a shot, it always amazes me whether it is in the dry or underwater somebody that doesn't do this never actually appreciates that these are done in TOTAL darkness, I dived there in 2009 no camera as we were doing a very deep dive and very long penetration so we needed to be right on it all of the time .

There is some really good footage on you tube underwater there

"I Dont Know Where I am Going, But When I Get There I will Know Where I am"

Paul Marvin
50.2% (Neutral)
Newbie

12 years ago

Mmm depends what you call affordable I have just bought one for the price of a small second hand car 2500 Lumens

"I Dont Know Where I am Going, But When I Get There I will Know Where I am"

RJV
50.2% (Neutral)
Newbie

12 years ago

Is that a diving one though. Presumably it's massively over-specified for poking around in the generally dry and easy going north Wales quarries?

fjällvandring
50.2% (Neutral)
Newbie

12 years ago

The problem is the camera itself produces amazing pictures underground, very detailed, except in large chambers, has a high megapixel count thus (according to guys in camera shop) harder to pick up light. I have a 10 mp camera and that picks up Wrysgan amazingly well, I can take 7 second exposures (ISO 80) of huge chambers and it's fine, on my SONY I need maybe a 40 second exposure and ISO 400 or above.. strange.

jeg elsker Norge, landets dialekter, folk, landskap og naturen!

Paul Marvin
50.2% (Neutral)
Newbie

12 years ago

#10

Yep, I have always said that they are massively over priced, the answer you get from the supplier is its the LED bulbs, this i find hard to believe when you fill up with petrol there is always some offer on with a LED torch ,ok its not waterproof but it still has the VERY expensive collection of LED bulbs inside and they are about £1.99

"I Dont Know Where I am Going, But When I Get There I will Know Where I am"

NewStuff
50.2% (Neutral)
Newbie

12 years ago

#11

Given 2 camera's with equal sized sensor's, and of about the same age, then the one with a higher megapixel count will have more noise in the picture. The smaller the photosite, the noisier the picture.

http://snapsort.com/learn/sensor/size

gives a brief overview.

Searching for the ever elusive Underground Titty Bar.

DDDWH CC

Morrisey
50.2% (Neutral)
Newbie

12 years ago

#12

"RJV" wrote:
Isn't looking to reduce your exposure times the way forward?
5 years + ago it might have been necessary for such long exposures but not these days. Mega bright torches are affordable now which leaves time for some actual exploring.

How the chuff did that bloke in the photo stand soooo still for ten minutes???

RJV
50.2% (Neutral)
Newbie

12 years ago

#13

Not a clue. I'd have been in the pub & halfway through my second Cherry B by the time the shutter closed! :blink:

fjällvandring
50.2% (Neutral)
Newbie

12 years ago

#14

"Morrisey" wrote:

"RJV" wrote:
Isn't looking to reduce your exposure times the way forward?
5 years + ago it might have been necessary for such long exposures but not these days. Mega bright torches are affordable now which leaves time for some actual exploring.

How the chuff did that bloke in the photo stand soooo still for ten minutes???

Bjorn? He crawled around out of way lighting different areas and then produced shadow affect. Not entirely sure how, but that's what he told me 😛

I've also heard that high megapixel cameras create more noise at higher ISOs. My sensor on my Sony isn't quite SLR sized, I think it's a fair bit smaller but a lot larger than normal compacts' 😉

jeg elsker Norge, landets dialekter, folk, landskap og naturen!

mudbeast
50.2% (Neutral)
Newbie

12 years ago

#15

🔗Personal-Album-11442-Image-88050[linkphoto]Personal-Album-11442-Image-88050[/linkphoto][/flink