Question 1

Which lens ratio allows you the greatest zoom range from wide-angle to close-up?&#10;A) 8:1&#10;B) 60:1&#10;C) 1:10&#10;D) 20:1&#10;E) 1:8

Accepted Answer

A lens with a 60:1 ratio offers the greatest zoom range, allowing for a wide range of focal lengths from wide-angle to close-up. This means it can zoom in 60 times the shortest focal length it can achieve.

Question 2

You are a director trying to decide whether to use a zoom or a dolly to create the visual effect of a person going toward a restaurant table; which of the following statements would give you the correct and proper guidance in making your decision?

A) a zoom brings the scene to the viewer; a dolly takes the viewer into the scene
B) a dolly brings the scene to the viewer; a zoom takes the viewer into the scene
C) there is no perceptible difference between a dolly and a zoom
D) it depends on the type of zoom lens
E) it depends on the zoom ratio

A

Accepted Answer

A zoom lens changes the focal length to bring the scene closer or further away without moving the camera position, creating a feeling of the scene coming towards the viewer. A dolly physically moves the camera towards or away from the subject, giving the impression that the viewer is moving into the scene. This distinction is crucial for achieving the desired visual effect in filmmaking.

Question 3

What three factors determine the depth of field of a field of view?&#10;A) zoom range, focal length, and subject-to-camera distance&#10;B) iris,&#210;-stop, and light level&#10;C) subject-to-camera distance, aperture, and zoom ratio&#10;D) aperture, subject-to-camera distance, and focal length&#10;E) subject-to-camera distance, contrast range, and iris

Accepted Answer

The depth of field is determined by the aperture (size of the opening in the lens), subject-to-camera distance, and focal length (zoom level). A larger aperture (lower f-number) will result in a shallower depth of field, while a smaller aperture (higher f-number) will result in a deeper depth of field. The subject-to-camera distance also plays a role, with closer subjects having a shallower depth of field and farther subjects having a deeper depth of field. Finally, longer focal lengths (higher zoom levels) will result in a shallower depth of field, while shorter focal lengths (lower zoom levels) will result in a deeper depth of field.

Question 4

If you were directing a commercial and wanted to create a comedic effect of grossly distorted facial features on talent, which lens should you use?&#10;A) slow lens&#10;B) special-effects lens&#10;C) wide-angle lens&#10;D) fast lens&#10;E) narrow-angle lens

Accepted Answer

A wide-angle lens can create a comedic effect by distorting facial features when used at a close distance to the subject, making it appear exaggerated or larger than life.

Question 5

What shot describes the subject in focus, with the background out of focus?&#10;A) a wide-angle shot&#10;B) a narrow-angle shot&#10;C) a shot with shallow depth of field&#10;D) a shot with great depth of field&#10;E) a field-of-view shot

Accepted Answer

A shot with shallow depth of field is the one in which the subject is in focus and the background is blurred. This can be achieved by using a wide aperture setting on the camera.

Question 6

If you use a wide-angle lens to shoot down to the street from a tall building, how would the people on the street appear in the image?&#10;A) very close to the camera&#10;B) the same distance from the camera as they would appear to normal vision&#10;C) larger than they really are&#10;D) farther away from the camera than they would appear to normal vision&#10;E) too small to see

Accepted Answer

A wide-angle lens tends to exaggerate the sense of depth and distance in a photo, making objects appear farther away from the camera than they would to the naked eye, especially when shooting from a high vantage point down to the street.

Question 7

What is the correct method of calibrating the zoom lens to keep it in focus throughout the zoom?&#10;A) zooming the lens all the way out and focusing on the background before zooming back in again&#10;B) zooming the lens all the way out and focusing on the principal subject before zooming back in again&#10;C) zooming the lens to the normal focal length and focusing on the principal subject&#10;D) zooming the lens all the way in and focusing on the test chart before zooming back out again&#10;E) zooming the lens all the way in and focusing on the principal subject before zooming back out again

Accepted Answer

Zooming the lens all the way in and focusing on the principal subject before zooming back out ensures that the subject remains in focus throughout the zoom range.

Question 8

Which is a prime lens?&#10;A) a 14:1 lens&#10;B) a 20:1 lens&#10;C) a zoom lens&#10;D) a fixed-focal-length lens&#10;E) a variable-focal-length lens

Accepted Answer

A prime lens is a fixed-focal-length lens, meaning it has one specific focal length and cannot zoom in or out. Therefore, option D is the correct choice as it is a fixed-focal-length lens.

Question 9

What is the macro position of a lens?&#10;A) the minimum object distance setting&#10;B) the widest-angle setting of a zoom lens&#10;C) the narrowest-angle setting of a zoom lens&#10;D) the smallest-aperture setting of a lens&#10;E) a setting that allows objects to be placed near the lens

Accepted Answer

The macro position of a lens is a setting that allows objects to be placed near the lens, typically resulting in a high magnification of the subject.  Options A, B, C, and D do not accurately describe the macro position.

Question 10

What must you do to permit less light to pass through the lens?&#10;A) change to a higher &#210;-stop number&#10;B) change to a lower &#210;-stop number&#10;C) open the iris&#10;D) increase the focal length of the lens&#10;E) increase the aperture

Accepted Answer

Changing to a higher f-stop number decreases the aperture size, allowing less light to pass through the lens.

Deck 7: Lenses