DoF is a tool for calculating depth of field, the distance from the camera to the subject in order to achieve the best focus. The depth of field is a crucial element in photography and it is important to know when to use your camera, when to use a lens and how to set the aperture. DoF will help you determine the best settings for your camera.

The app is a tool for professionals and nonprofessionals. It is a helpful tool that will help you achieve the best results.

The app has a built-in focus meter and an image viewer, so you can check the focus and see what the depth of field is for your lens.