Post by SidW on Sept 15, 2008 19:20:53 GMT -5
Anyone got any pictures of caves?
We're just back from a weekend in Northern Ireland, where we visited the Marble Arch cave in County Fermanagh.
The Cladagh River runs westward off the Cuilgagh Mountain, circling round through the Irish Republic, returning into Fermanagh where it plunges into the cave back under the mountain. It ultimately emerges again and flows into Lough Erne. The 90 minute tour follows the river underground for 1.5 km (roughly one mile). The exit route is up a flight of 150 steps.
(1) 1/8s f/4 24mm (equ. 38mm)
The next one had me puzzled. Stalagmites (growing upwards) shouldn't look like this, then I remembered
it was a close-up of a reflection of stalactites growing down from the roof and mirrored in a pool of the river:
(2) 1/3s f/5.6 55mm (equ. 85mm)
The next picture, showing roof and river, should explain it:
(3) 1/30s f/3.5 18mm (equ. 28mm)
More pictures of the river underground, sometimes deep, sometimes shallow:
(4) 1/3s f/4 24mm
(5) 1/6s f/3.5 18mm
(6) 1/6s f/3.5 18mm
(7) 1/6s f/5 41mm (equ. 65mm)
EOS20D, standard 18mm/3.5-55mm/5.6 with stabilizer (IS), ISO1600.
Flash is useless in the cave. The walls are streaming with water that would throw the light straight back at the lens. The ambient light consisted of concealed floodlights aimed at interesting or dramatic features.
These exposures were only possible thanks to the image stabilizer (a tripod was out of the question on a public tour that was moving and had to keep together without stragglers, especially one with wobbly legs, straggler that is not tripod). The alternative would have been fumbling in the semidarkness with at least two prime lenses (wide, and short tele) at f/1.5 (which I don't have), preferably already fitted to two different bodies (which I don't have). And 1950s style with 25 or 64 ASA Kodachrome ......
We're just back from a weekend in Northern Ireland, where we visited the Marble Arch cave in County Fermanagh.
The Cladagh River runs westward off the Cuilgagh Mountain, circling round through the Irish Republic, returning into Fermanagh where it plunges into the cave back under the mountain. It ultimately emerges again and flows into Lough Erne. The 90 minute tour follows the river underground for 1.5 km (roughly one mile). The exit route is up a flight of 150 steps.
(1) 1/8s f/4 24mm (equ. 38mm)
The next one had me puzzled. Stalagmites (growing upwards) shouldn't look like this, then I remembered
it was a close-up of a reflection of stalactites growing down from the roof and mirrored in a pool of the river:
(2) 1/3s f/5.6 55mm (equ. 85mm)
The next picture, showing roof and river, should explain it:
(3) 1/30s f/3.5 18mm (equ. 28mm)
More pictures of the river underground, sometimes deep, sometimes shallow:
(4) 1/3s f/4 24mm
(5) 1/6s f/3.5 18mm
(6) 1/6s f/3.5 18mm
(7) 1/6s f/5 41mm (equ. 65mm)
EOS20D, standard 18mm/3.5-55mm/5.6 with stabilizer (IS), ISO1600.
Flash is useless in the cave. The walls are streaming with water that would throw the light straight back at the lens. The ambient light consisted of concealed floodlights aimed at interesting or dramatic features.
These exposures were only possible thanks to the image stabilizer (a tripod was out of the question on a public tour that was moving and had to keep together without stragglers, especially one with wobbly legs, straggler that is not tripod). The alternative would have been fumbling in the semidarkness with at least two prime lenses (wide, and short tele) at f/1.5 (which I don't have), preferably already fitted to two different bodies (which I don't have). And 1950s style with 25 or 64 ASA Kodachrome ......