What defines the distance between the nearest and farthest objects that are in focus in a camera?

• A. Field of Vision
• B. Focus Range
• C. Depth of Field
• D. Focus Length

Answer: (C)

The correct answer is Depth of Field, which is a fundamental concept in photography that describes the range of distance within a photo that appears acceptably sharp. Essentially, depth of field defines the area in front of and behind the subject that is in focus, allowing photographers to create a sense of dimension and focus their viewer's attention on particular elements within the frame.

In practical terms, a large depth of field means that more of the scene is in focus, making it ideal for landscapes where both foreground and background details are important. Conversely, a shallow depth of field isolates the subject and blurs the background, which is often used in portrait photography to enhance the subject's prominence.

Other terms, such as field of vision and focus range, do not precisely capture this idea. Field of vision typically relates to the extent of the observable world through a camera lens rather than the sharp focus aspect. Focus range may imply the adjustment of focus but doesn't define the quality or extent of that focus concerning the depth in a photograph. Focus length, likely referring to focal length, pertains to the distance from the lens to the sensor, which affects the image composition and perspective but not the depth of field directly. Thus, depth of field is the most accurate term to describe the focus