Which term describes the range of distance for which all objects are in sharp focus?

The term that describes the range of distance for which all objects are in sharp focus is depth of field. Depth of field is a fundamental concept in photography that refers to the zone of acceptable sharpness within an image. This includes not only the subject of interest but also the areas in front of and behind the subject that appear acceptably sharp.

A larger depth of field means that more of the image, both near and far from the camera, is in focus, which is often desirable for landscape photography or scenes where detail is important throughout the composition. Conversely, a shallow depth of field isolates the subject by blurring the background and foreground, which can be very effective in portrait photography.

Focal length relates to the distance between the lens and the image sensor when the subject is in focus, but it doesn't directly convey the range of distances that are in sharp focus. Aperture refers to the opening in the lens that controls the amount of light entering the camera and it does influence depth of field, but it is not synonymous with it. Shutter speed determines how long the camera's sensor is exposed to light, which affects motion blur but does not influence focus or depth of field. Therefore, depth of field is specifically the term that captures the concept of