Available light photography exposure calculator
a film speed (or digital equivalent) and ambient lighting conditions. We will
give you a table of apertures (f/stop) and shutter speed for the given exposure
value (EV). This table allows you to use a camera with manual control in
conditions outside the range of the built-in light meter, which is common in
available light photography. The table does not account for reciprocity failure
which reduces the sensitivity of film for very long exposures (this does not
apply to digital sensors).
Available Light app now available for
Windows Phone 8.1,
Android (Google Play),
iOS (Apple iTunes)
Kindle (Amazon Appstore).
|Film speed (ISO):
= log2(aperture2/shutter speed)
|aperture f/||shutter speed|