Culture · 6 pages · 12 min
How depth of field is a choice
Depth of field is how much stays sharp, and aperture is the usual way of choosing it.
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From the opening
Depth of field is the span of distances that look acceptably sharp around the plane you focused on. It is a choice because that span can be widened or narrowed, and its width decides what the picture treats as the subject and what it lets go soft. The opening covers aperture widens or narrows the zone, distance and focal length join in, and sharp depends on the viewing size.
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Inside
- Aperture widens or narrows the zone
- Distance and focal length join in
- Sharp depends on the viewing size
- Diffraction limits the small opening
- Where the idea stops applying
- A distinction worth keeping
Sources
- Depth of field and the circle of confusion
- Aperture as the primary control of that zone