Focus & Depth of Field
60 terms · page 1 of 3
AF Microadjustment
A camera setting that applies a per-lens correction to compensate for consistent front or back focus.
Focus & Depth of FieldAF-assist Illuminator
A lamp or patterned light that projects onto the subject to give autofocus something to measure in darkness.
Focus & Depth of FieldAnimal and Bird Detection
Subject recognition trained on animal anatomy, able to find and hold an eye on a creature rather than a human face.
Focus & Depth of FieldAutofocus
A system that measures focus error and drives the lens to correct it automatically.
Focus & Depth of FieldAutomatic Servo Selection
A mode, marked AF-A, in which the camera decides whether to lock focus or track continuously based on whether the subject appears to be…
Focus & Depth of FieldBack Focus
A calibration error in which a lens consistently focuses slightly beyond the intended subject.
Focus & Depth of FieldBack-button Focus
A configuration that moves autofocus activation from the shutter release to a separate rear button.
Focus & Depth of FieldCircle of Confusion
The largest blur circle that still reads as a point to the viewer, and the value on which every depth-of-field calculation depends.
Focus & Depth of FieldContinuous-servo Autofocus
An autofocus mode, marked AF-C or AI Servo, that keeps adjusting focus for as long as the button is held.
Focus & Depth of FieldContrast-detection Autofocus
A focusing method that drives the lens back and forth, measuring image contrast, and settles at the point of maximum contrast.
Focus & Depth of FieldCross-type AF Point
A phase-detection point sensitive to detail running in both horizontal and vertical directions.
Focus & Depth of FieldDeep Depth of Field
A wide zone of sharpness in which foreground, subject and background all hold detail.
Focus & Depth of FieldDepth of Field
The range of distances in front of and behind the plane of focus that appears acceptably sharp in the final image.
Focus & Depth of FieldDepth of Field Scale
Markings on a lens barrel showing the near and far limits of sharpness for each aperture at the set focus distance.
Focus & Depth of FieldDepth of Focus
The tolerance in sensor position, on the camera side of the lens, within which the image stays acceptably sharp.
Focus & Depth of FieldDiopter Adjustment
A viewfinder correction that matches the eyepiece to the photographer's eyesight.
Focus & Depth of FieldDual Pixel Autofocus
An on-sensor phase-detection design in which every photosite is split into two independently readable halves.
Focus & Depth of FieldEye AF
A refinement of face detection that locates and focuses on the eye itself, and usually lets the photographer choose which one.
Focus & Depth of FieldFace Detection
A system that identifies human faces in the frame and prioritises them for focus and often for exposure.
Focus & Depth of FieldFocus
The condition in which light from a point on the subject converges to a point on the sensor, rendering that part of the scene sharp.
Focus & Depth of FieldFocus and Recompose
The technique of focusing with a central point, locking, then shifting the camera to place the subject elsewhere in the frame.
Focus & Depth of FieldFocus Bracketing
An in-camera function that automatically shoots a sequence of frames at incrementally different focus distances.
Focus & Depth of FieldFocus Breathing
A change in a lens's angle of view as it is focused, so the framing appears to zoom slightly during a focus pull.
Focus & Depth of FieldFocus Confirmation
An indicator, usually a dot or the illumination of an AF point, showing that the camera considers focus achieved.