This app computes the depth of field, the hyperfocal distance and the Bokeh size for photographers, depending on the aperture, the focal length, the focussed distance, the form factor of the sensor, and the accepted circle of confusion. The user can easily set these parameters in a clear user interface by dragging or by using a dialog. The display can be switched between meter and feet. All settings are saved, and can be reset to the default values. There is also a help page in English language.