Why the obvious response to low light – to raise the ISO – isn’t the best for clean digital image capture.
Rob Ellis goes through, step by step, how to use contrast ratio to achieve a scene which looks dark, but also looks correctly exposed…
… and, in the process, reveals how, contrary to what one may expect, noise in the shadows can be reduced if lit for a lower ISO:
Gary Scaife concurs, with some handy dynamic range charts (via OBP):
Further Viewing
Rob Ellis’ video goes into contrast ratios – more on that topic here…
… and in this Contrast Ratio Workshop:
An intro to the technical basics of the exposure triangle, to capture the best possible image:
A roundup of tutorials on how to capture the best possible image, technically, using camera assist tools: