PhotoCalc offers handy calculations for professional or hobbyist photographers working in the studio or in the field. PhotoCalc provides exposure reciprocation, depth of field and hyper-focal distance calculations, and flash exposure calculations.
In addition to the calculators, PhotoCalc also has a reference section, with a glossary, and several reference documents such as the Zone System, and the Sunny 16 Rule. PhotoCalc also contains an integrated version of Sunrise, a sunrise/sunset calculator that uses iPhone\'s ability to determine your location to accurately calculate the time of sunrise, sunset and solar noon for the current day, or any day you select.
PhotoCalc remembers the last position and values used, so it\'s easy to switch to another application or take a phone call and return to the exact same position.