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Forensic Photography > 6 And 7 > Flashcards

6 And 7 Flashcards

1
Q

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

A

FILM (SENTISIZED MATERIAL)

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2
Q

Film Structure
The _________ is a hard transparent coating to help WARD OFF SCRATCHES.

A

TOP LAYER

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3
Q

The ________ anti-halation coating which means that it has a dull quality so that light that passes through the rest of the film won’t bounce back mirror fashion.

A

BOTTOM LAYER

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4
Q

This SURFACE OF A FILM and photographic paper CAPABLE OF RETAINING A LATENT IMAGE is called __________ contains thousands of tiny GRAINS OF SILVER SALTS (HALIDES) suspended in animal gelatin.

A

EMULSION

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5
Q

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.

A

TOP COATING

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6
Q

This refers to structure of film that COMPOSED OF SILVER HALIDES AND GELATINE

A

EMULSION LAYER

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7
Q

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.
— This refers to PLASTIC FILM BASE.

A

FILM BASE

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8
Q

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 image sharper since it suppresses double image, and PREVENTS THE APPEARANCE OF HALO FORMATION in the photograph.

A

ANTI CURL

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9
Q

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

A

STRUCTURE OF COLOR FILM

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10
Q

This refers to a sensitive to BLUE LIGHT ONLY; green and red light passes through it without exposing the color halides.

A

BLUE FILTER

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11
Q

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.

A

YELLOW FILTER

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12
Q

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.

A

GREEN FILTER

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13
Q

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.

A

RED FILTER

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14
Q

Emulsion LAYERS:

A
  1. BLUE FILTER
  2. YELLOW FILTER
  3. GREEN FILTER
  4. RED FILTER
  5. ANTI HALATION COATING
  6. FILM BASE
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15
Q

This refers to film INTENDED FOR B AND W PHOTOGRAPHY.

A

BLACK AND WHITE FILMS

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16
Q

This refers to FILMS THAT HAVE NAMES ENDING IN COLOR - color negatives for prints.

A

COLOR FILM

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17
Q

This refers to films with names ending in CHROME - FOR COLOR TRANSPARENCY - for slides films that are exposed by slides, mounted in a cardboard slide projector; reversal type.

A

CHROME FILM

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18
Q

This refers to a material which is sensitive to X - RAY REGION OF THE ELECTROMAGNETIC SPECTRUM.

A

X RAY FILM

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19
Q

Typology of Films (According to Use):

A
  1. BLACK AND WHITE FILMS
  2. COLOR FILM
  3. CHROME FILM
  4. X RAY FILM
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20
Q

This refers to film that is SENSITIVE TO A SINGLE COLOR OF LIGHT.

A

MONOCHROMATIC FILM

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21
Q

This refers to film that is more sensitive to UV RAYS ONLY

A

ULTRA VIOLET SENSITIVE FILM

22
Q

This refers to film that is SENSITIVE TO BLUE RAYS OF LIGHT.

A

BLUE SENSITIVE FILM

23
Q

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 and MOST COMMONLY USED IN INVESTIGATIVE PHOTOGRAPHY because it produces the most natural recording of colors.

A

PANCHROMATIC FILM

24
Q

This refers to film that is sensitive to UV rays, BLUE AND GREEN COLORS BUT NOT TO RED.

A

ORTHOCHROMATIC FILM

25
Q

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. It is USEFUL IN LABORATORY ANALYSIS of questionable documents; in the discovery of old or faded tattoos or areas where small objects are hidden under the skin; and in the construction of camera traps.

A

INFRARED FILM

26
Q

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.

A

COLOR REVERSAL COLOR FILM

27
Q

This refers to film that is USED IN MAKING PRINTS, END IN THE WORD COLOR.

A

COLOR NEGATIVE FILM

28
Q

This refers to FILM SENSITIVITY TO LIGHT.

A

FILM SPEED

29
Q

Types of Speed Ratings:

A

1.ASA (AMERICAN STANDARDS ASSOCIATION)
2.DIN (Deutsche Industrien Normen) (GERMAN INSTITUTE FOR STANDARDIZATION—english)
3.ISO (Combination of ASA and DIN) INTERNATIONAL ORGANIZATION FOR STANDARDIZATION

30
Q

Films According to Sensitivity:

A
  1. SLOW — ASA 100 BELOW -
    2.MEDIUM — ASA 100 TO 200.
    3.FAST — ABOVE ASA 200 AND 1600
    4.ULTRA - FAST — ASA 3200 AND 6400.
31
Q

This refers to film sizes for CARTRIDGE LOADING POCKET CAMERAS.

A

110

32
Q

This refers to film sizes that give a picture that MEASURE ABOUT 2 1/4 INCHES WIDE.

A

120

33
Q

This refers to film sizes that are OLDER AND LARGER CARTRIDGE LOADING TYPE.

A

126

34
Q

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.

A

135

35
Q

This refers to film sizes that are the SAME AS 120’S but yields TWICE MANY EXPOSURES.

A

220

36
Q

This refers to a FINE GRAIN FILM that gives sharp differences between black and white. It is USED IN COPYING DOCUMENTS and photographing fingerprints.

A

CONTRAST PROCESS PANCHROMATIC FILM

37
Q

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.

A

INFRA RED FILM

38
Q

This refers to film that is particularly VALUABLE FOR LAW ENFORCEMENT PURPOSES.

A

VERY HIGH SPEED FILM

39
Q

This refers to layer of photographic paper that COMPOSED OF SILVER HALIDES SUSPENDED IN GELATINE, the layer making the paper light sensitive; emulsion maybe contains silver chloride, silver bromide, or silver chloro bromide.

A

EMULSION LAYER

40
Q

This refers to layer of photographic paper that is a GELATINE LAYER CONTAINING BARITE CRYSTALS (barium oxide) to increase the reflectivity of the paper; the layer that makes the film glossy.

A

BARYA LAYER

41
Q

This refers to layer of photographic paper that is MADE OF HARD PAPER which must be chemically pure; chemical content does not change or react with light or other chemicals during printing.

A

BASE

42
Q

This refers to the COMBINATION OF ITS TEXTURE AND FINISH; texture maybe smooth fine grained, or rough and finish maybe glossy (semi – matt) and matt.

A

SURFACE

43
Q

This refers to COATING that is made up by using a LAYER OF PAPER which is coated both sides with a SYNTHETIC POLYMER, usually polyethylene; forms the base on to which the emulsion is coated.

A

RESIN COATED (RC) PAPERS

44
Q

This refers to COATING THAT CAN BE AIR – DRIED, needs large volumes of water for effective washing that can be reduced with washing aid (hypoclearing agent).

A

FIBER BASED PAPERS

45
Q

This refers to types based on EMULSION WITH SLOW EMULSION SPEED for contact printing; image size is the same as that of the negatives; they give blue black tones in a 65 – 68 degrees F to develop.

A

SILVER CHLORIDE PAPERS

46
Q

This refers to types based on EMULSION WITH FAST EMULSION SPEED; for projection printing (enlarging); about 100 to 1000 times as sensitive as chloride papers; they give black tones in metal hydroquinone developers and take about 1 ½ minutes to develop at 18 – 20 degrees C; give neutral to cold black tone which is only affected by development time and techniques.

A

SILVER BROMIDE PAPERS

47
Q

This refers to types based on EMULSION THAT THE SLOW is used for contact and the FAST IS USED FOR ENLARGEMENT/projection printing; they give an image tone from warm black to reddish brown, depending on length of exposure, type, dilution and duration of developer.

A

SILVER CHLORO BROMIDE

48
Q

This refers to types based on EMULSION THAT CLASSIFIED BY ITS OWN MAKER according to their own ideas; most of those being used confirm broadly with:

A

VARIABLE CONTRAST PAPER

49
Q

This refers to contrast that USED TO TONE DOWN a very contrasty negative and produces a fairly normal print, and contrasty paper that can be used to compensate for lack of brilliance in low contrast negatives.

A

LOW CONTRAST

50
Q

This refers to contrast that is used to PRINT NORMAL OR MEDIUM CONTRAST NEGATIVES.

A

NORMAL OR MEDIUM CONTRAST

Forensic Photography (2 decks)

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