夜景モードで明るいけど、ホントはもっと暗い岩場。
Camera model DSC-TX20 Shutter speed 1/8 Aperture f/3.5 Maximum aperture f/3.5 Exposure bias 0.00 Exposure Normal program Focal length 4.43mm Light source Unknown Flash Off Metering Pattern Brightness 17,179,868.3 ISO sensitivity 1,250