Depth of Field Online Calculator

DOFMaster is an online Depth of Field calculator. You enter your camera model (it needs to know the crop factor), Focal length, Selected f-stop and Subject distance. The calculator instantly shows the Near limit and
Far limit which mean the distance where everying will be in focus.

Depth of Field Online Calculator featured

Shallow depth of field lets you draw the viewer’s eye into specific parts of the image, creating a visible distance between subject and the rest of the otherwise flat, two-dimensional photograph.

On the other side, using a large focus point will ensure that things like sunsets or group shots of people are sharp from corner to corner in your image. Implementing these two basic techniques of depth of field allows you to choose how the viewer of your photograph perceives everything and allows you to be creative with what is and isn’t in focus.

In optics, particularly as it relates to film and photography, the depth of field (DOF) is the portion of a scene that appears acceptably sharp in the image. Although a lens can precisely focus at only one distance, the decrease in sharpness is gradual on each side of the focused distance, so that within the DOF, the unsharpness is imperceptible under normal viewing conditions.

In some cases, it may be desirable to have the entire image sharp, and a large DOF is appropriate. In other cases, a small DOF may be more effective, emphasizing the subject while de-emphasizing the foreground and background. In cinematography, a large DOF is often called deep focus, and a small DOF is often called shallow focus.

The DOF is determined by the camera-to-subject distance, the lens focal length, the lens f-number, and the format size or circle of confusion criterion.

From Wikipedia

DOFMaster website: www.dofmaster.com/dofjs.html