Chapter 6

Question 1

This refers to a cellulose tape or plate where silver salts are suspended that are capable of recording light.

It is only a fraction of an inch thick, yet it is made of many layers. It is a “Sensitized Material”.

Answer 1

Film

Question 2

When the emulsion is subjected to sufficient exposure to light, it forms a latent (invisible) image.

Chemical processes can then be applied to the film to create a visible image, in a process called

Answer 2

Film developing

Question 3

This refers to top layer; scratch – resistant coating; gelatine coating;

an over – coating composed of a thin
transparent layer of hard gelatine which helps protect the silver halide emulsion from scratches and abrasions.

Answer 3

Top Coating

Question 4

This refers to structure of film that composed of silver halides and gelatine – a layer composed of silver
compounds (which are light sensitive) and halogens (such as bromide, chloride, and iodide which is used in small amounts, seldom made more than 5% with silver bromide in fast film emulsion).

Answer 4

Emulsion layer

Question 5

This refers to structure of film that is made of cellulose acetate or other materials such as paper, plastic, or
glass which supports the emulsion layer and is coated with a non – curl anti – halation backing.

Answer 5

Film base

Question 6

This refers to a black dye applied on the rear surface of the film, it absorbs light that may penetrate the emulsion layer to prevent it from reflecting back to the emulsion thus making the mage sharper since it suppresses double image, and prevents the appearance of halo formation in the photograph.

Answer 6

Anti curl

Question 7

This refers to emulsion layer that consist of three (or four) layers stacked one on top of another with filter in between each.

Answer 7

Structure of color film

Question 8

This refers to a sensitive to blue light only; green and red light passes through it without exposing the color halides.

Answer 8

Blue filter

Question 9

This refers to Carey – lea silver suspended in gelatin – it is coated between the top and second layer to absorb any penetrating blue light but allowing green and red light to pass through.

Answer 9

Yellow filter

Question 10

This refers to a layer that is orthochromatic; the layer sensitive to blue light (which cannot reach it) and green, but not to red; red light passes on the bottom of the emulsion layer.

Answer 10

Green filter

Question 11

This refers to a panchromatic layer, sensitive to blue and red.

It is also somewhat sensitive to green light but to such a slight degree that is not important.

Answer 11

Red filter

Question 12

This refers to plastic film base.

Answer 12

Film base

Question 13

This refers to film intended for B and W photography.

Answer 13

Black and white film

Question 14

refers to films that have name ending in Color – color negatives for prints.

Answer 14

Color films

Question 15

This refers to films with names ending in Chrome – for color transparency – for slides films that are exposed by slides, mounted in a cardboard for slide projectors; reversal type.

Answer 15

Chrome film

Question 16

This refers to a material which is sensitive to X – ray region of the electromagnetic spectrum.

Answer 16

X ray film

Question 17

This refers to film that is sensitive to a single color of light

Answer 17

Monochromatic film

Question 18

This refers to film that is more sensitive to blue rays of light.

Answer 18

Blue sensitive film

Question 19

This refers to film that is sensitive to UV rays only.

Answer 19

Ultraviolet sensitive film

Question 20

This refers to film that is sensitive to ultra – violet rays, and all light found in the visible spectrum, especially
to blue and violet light, suitable for general use in the preparation of black – and – white photographs

most commonly used in investigative photography because it produces the most natural recording of colors.

Answer 20

Panchromatic film

Question 21

This refers to film that is sensitive to UV rays, blue and green colors but not to red.

Answer 21

Orthochromatic film

Question 22

This refers to film that is sensitive to infra – red and ultra – Violet radiation, which is beyond the human eye’s sensitivity, also sensitive to all the colors found in the spectrum, and useful in penetrating haze because
of its longer wavelength.

Answer 22

Infrared film

Question 23

this refers to film that is sensitive to ultraviolet and blue – violet colors only, and may be used when natural
radiation is not important.

Answer 23

Non-chromatic

Question 24

This refers to film that produces transparencies that can be mounted as slides and projected with a slide
viewer or on a light box, and end in the word Chrome.

Answer 24

Color reversal of color film

Question 25

This refers to film that is used in making prints, end in the word Color.

Answer 25

Color negative film

Question 26

This refers to film sensitivity to light. The higher the rating of the film, the more sensitive it will be.

Answer 26

Film speed

Question 27

This refers to a fine grain film that gives sharp differences between black and white. It is used in copying
documents and photographing fingerprints.

Answer 27

Contrast process panchromatic film

Question 28

This refers to film that is similar to panchromatic, but it is much slower and more sensitive to blue than red
light.

Answer 28

Contrast process orthochromatic film

Question 29

This refers to film that is sensitized with color dyes to make it possible to record only invisible infra–red heat waves, also sensitive to blue light, so special filters have to be put over the lens.

Answer 29

Infrared film

Question 30

This refers to film that is particularly valuable for law enforcement purposes.

It is useful for taking pictures at night. It has an ASA 800 to 2000

Answer 30

Very high speed film

Question 31

This refers to film sizes for cartridge loading pocket cameras.

Answer 31

110

Question 32

This refers to film sizes that give a picture that measure about 2/14 inches wide.

Answer 32

120

Question 33

This refers to film sizes that is older and larger cartridge loading type.

Answer 33

126

Question 34

This refers to film sizes that are commonly known as 35mm, so named because the film is 35mm wide. It was originally for motion pictures and the size used in commercial theatres.

Answer 34

135

Question 35

This refers to film sizes that are the same as 120’s but yields twice many exposures.

Answer 35

220