Depth of Field Calculator, developed by Detlef Vagt, is a free Android app that calculates the near point, far point, hyperfocal distance, and depth of field using various inputs such as aperture, focal length, distance, and sensor size. This app is an essential tool for photographers who want to achieve perfect focus and sharpness in their images.

With Depth of Field Calculator, up to three lenses can have their data preset, including their designation, largest and smallest aperture, adjusting stage, focal range, and minimum focusing distance. This feature allows photographers to quickly switch between different lenses and get the desired results.

The app also provides the option to change the background to transparent or black, making it easier to use in different lighting conditions. Overall, Depth of Field Calculator is a must-have app for photographers who want to achieve professional-level results with their photography.