Exposure is the amount of light falling on the image sensor of a DSLR.
Some factors affecting the exposure:
- when aperture is small, exposure is low and when aperture is big, exposure is high
- when shutter speed is small, exposure is low and when sutter speed is high, exposure is also high
Some links on exposure
Measurement for Exposure is in Exposure Value (EV):
- from -6, -5, -4... ... 0, 1, 2, 3, 4, 5, 6
- it is defined in a base 2 logarithmic scale