The formations are
unbelievable. The dim light is a photographer's challenge. Tripods were not
permitted on this tour so all the images seen here were with my camera
hand-held. I set
my digital camera at the highest ISO rating (1600). Still the exposures were
mostly around one-fifth of a second with the camera lens at its widest
aperture. (Dimmed lighting is necessary to hold down the heat and to
inhibit growth of algae.)
I was able to obtain some sharp images by bracing my elbows on the railing
which follows the path through the cavern; however, many of my photos
show camera movement and are unusable.
The formations are unbelievable. The dim light is a photographer's challenge. Tripods were not permitted on this tour so all the images seen here were with my camera hand-held. I set my digital camera at the highest ISO rating (1600). Still the exposures were mostly around one-fifth of a second with the camera lens at its widest aperture. (Dimmed lighting is necessary to hold down the heat and to inhibit growth of algae.)I was able to obtain some sharp images by bracing my elbows on the railing which follows the path through the cavern; however, many of my photos show camera movement and are unusable.
