Terms starting with F
67 terms · page 2 of 3
Flag
An opaque black panel placed to block light from reaching a specific area.
Cameras, Formats & SystemsFlange Focal Distance
The distance from a camera's lens mounting flange to the sensor or film plane.
Lighting & FlashFlash Duration
How long a flash's burst of light actually lasts, which sets its ability to freeze motion independently of shutter speed.
Lighting & FlashFlash Exposure Compensation
An offset applied to TTL flash output, in stops, independent of the ambient exposure compensation.
Lighting & FlashFlash Exposure Lock
A control that fires the metering preflash in advance and holds the resulting power setting for subsequent frames.
Lighting & FlashFlash Sync Speed
The fastest shutter speed at which a focal-plane shutter is fully open, and therefore the fastest speed at which flash can light the whole…
Sensors & Digital CaptureFlat Field Correction
Dividing an image by a frame of evenly illuminated field to remove vignetting, dust shadows and photosite sensitivity variation.
Motion, Video & Creative TechniquesFlat Picture Profile
A camera setting that reduces contrast and saturation to retain more information for later adjustment, without the full complexity of log.
Exposure & MeteringFlicker Reduction
A camera function that times the shutter release to the peak of a pulsing artificial light source, preventing exposure and colour shifts…
Optics, Lenses & FiltersFluorite Element
An element made of grown calcium fluoride crystal, which has exceptionally low dispersion and enables near-perfect colour correction.
Optics, Lenses & FiltersFocal Length
The distance from a lens's optical centre to the sensor when the lens is focused at infinity, which determines magnification and angle of…
Composition & Visual DesignFocal Point
The element in a photograph that the eye is drawn to first and returns to.
Optics, Lenses & FiltersFocal Reducer
An adapter containing glass that compresses a lens's image circle onto a smaller sensor, shortening focal length and gaining light.
Cameras, Formats & SystemsFocal-plane Shutter
A shutter made of two curtains that travel across the sensor just in front of it, exposing the frame as a moving slit at high speeds.
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.
Focus & Depth of FieldFocus Limiter
A switch that restricts a lens's focusing range, so autofocus does not search through distances the subject cannot occupy.
Focus & Depth of FieldFocus Lock
Holding the current focus distance so that further movement of the camera or subject does not trigger refocusing.
Focus & Depth of FieldFocus Magnification
A function that enlarges part of the live image so focus can be judged at a pixel level.
Focus & Depth of FieldFocus Peaking
A display aid that outlines the highest-contrast edges in the live image, marking what is currently in focus.
Focus & Depth of FieldFocus Priority
A setting that prevents the shutter from firing until the camera confirms focus has been achieved.