What is Depth of Field means ?
- Jan 15, 2014
- 1 min read
Depth of field is the distance in metres or feet in front of and behind the focal point that is in acceptable focus. For example, with the lens focussed on an object 30ft away, the range at which objects appear to be in focus might be from 15ft from the lens to infinity. Any objects closer than 15ft would become progressively softer as they get nearer to the camera.
A shallow depth of field means that the subject placed at the focal point will be sharp whilst objects immediately in front of and behind this point will be soft. A deep depth of field is the opposite and will render most of the scene in focus.
Depth of field is affected by the object's distance from the lens, the lens focal length and the lens aperture or F Stop. These factors can be controlled creatively to give a desired effect.
Depth of field can be calculated using depth of field tables or a Kelly calculator.
I found your explanation of depth of field really clear and helpful, especially how you showed real examples of sharp subjects against soft backgrounds to make the concept click. When I first tried photography, I was so confused I joked I might do my management class before even picking up a camera, just to get the patience part right. Your post makes technical ideas feel easy and fun to try.
I read your explanation of depth of field as the range in front of and behind the focus point that appears sharp in a photo, and it really helped clarify something that used to confuse me. I once stayed up late cramming before a big test and jokingly searched for a do my online exam solution when I was exhausted, but diving into fundamentals like DOF helped me refocus and actually enjoy learning the craft.