← Broadcasting 1 Test
5 Written Questions
5 Matching Questions
- DEPTH OF FIELD
- servo zoom control
- macro position
- SELECTIVE FOCUS
- slow lens
- a The area in which all objects, located at different distances from the camera, appear in focus. Depth of field depends in the focal length of the lens, its f-stop, and the distance between the object and the camera.
- b Emphasizing an object in a shallow depth of field through focus while keeping its foreground and/or background out of focus.
- c Zoom control that activates motor-driven mechanisms.
- d A lens that permits a relatively small amount of light to pass through at its maximum aperture (relatively high f-stop number at its lowest setting). Can be used only in well-lighted areas.
- e A lens setting that allows it to be focused at very close distances from an object. Used for close-ups of small objects.
5 Multiple Choice Questions
- A lens that can be programmed through a small built-in computer to repeat zoom positions and their corresponding focus settings.
- a lens or zoom lens position with a focal length that approximates the spatial relationships of normal vision.
- How close the camera can get to an object and still focus on it.
- a picture is in focus when it appears sharp and clear onscreen (technically, the point where the light rays refracted by the lens coverage).
- the crowding effect achieved by a narrow-angle (telephoto) lens wherein object proportions and relative distances seem shallower
5 True/False Questions
CALIBRATE → to preset a zoom lens to remain in focus
focal length → a lens or zoom lens position with a focal length that approximates the spatial relationships of normal vision.
range extender → An optical attachment to the zoom lens that extends its focal length. Also called extender.
narrow-angle lens → Gives a close-up view of an event relatively far away from the camera. Also called long-focal-length or telephoto lens.
IRIS → Adjustable lens-opening that controls the amount of light passing through the lens. Also called diaphragm or lens diaphragm.