FIS 335 - Forensic Photography WVU
Final Exam correctly answered to pass
The photographer controls the shutter speed and ISO and the camera controls the aperture -
correct answer ✔✔What does shutter priority mode mean?
The photographer controls the aperture and ISO and the camera controls the shutter speed -
correct answer ✔✔What does aperture priority mode mean?
-DOF increases
-Lower amount of light
-narrower DOF - correct answer ✔✔When going from f/8 --> f/11, what happens?
-normal focal length: 35mm
-decreasing focal length increases angle of view
-increasing focal length decreases angle of view
18mm = wide-angle lens; elongate
100mm = long lens; compression - correct answer ✔✔APS-C camera
-normal focal length: 50mm
-decreasing focal length increases angle of view
-increasing focal length decreases angle of view
You have a full frame camera at 100mm but want the same AOV as the crop sensor camera.
100/1.5=66mm
crop sensor ratio = 1.5 - correct answer ✔✔Full Frame camera
,blue - orange
violet - yellow
red - green
clear/UV - yellow - correct answer ✔✔Filter colors
this is the flash firing when the shutter is completely open - correct answer ✔✔What is the
purpose of sync speed?
-timed exposure
-painting with light
-aperture priority mode - correct answer ✔✔Methods to photograph dim-lit scenes
Matrix: average of entire scene
Spot: focus point on evidence and a circle around it - correct answer ✔✔Matrix vs. spot mode
A faster shutter speed, the closer the curtains open - correct answer ✔✔How does a faster
shutter speed relate to distance of the curtains opening/closing?
-one or more lights positioned at 45-degree angles that provide lighting directly to the
subject/evidence
-General evidence where size and shape are important - correct answer ✔✔Types of lighting:
Direct
-used a low-angle illumination of the subject/evidence
-position the light boo source to skim across the surface to highlight the raised areas
-assists in showing detail on the surface of the subject/evidence by creating shadows
,impression evidence such as tool marks, fingerprints, footwear and indented writing - correct
answer ✔✔Types of lighting:
Oblique
-uses light that has been bounced off a surface (generally white/neutral, but doesn't have to be)
The bounce produces a softer light that helps reduce shadows and provide even non-glare
lighting with low contrast
-subjects/evidence that are concave or convex - correct answer ✔✔Types of lighting:
Bounce lighting
-Uses an item placed between the light source and the subject/evidence to soften the light and
produce even illumination
-helps to reduce hot spots and glare
-shiny or reflective subjects/evidence - correct answer ✔✔Types of lighting:
Diffused
-uses light that illuminated the subject/evidence from behind and is directed through the
subject/evidence
-provides a shadow-free background
-transparent or translucent subjects/evidence such as fingerprints on a glass; watermarks on
paper - correct answer ✔✔Types of lighting:
Transmitted lighting
-uses a light source at 90-degrees from the axis of the lens with the subject/evidence located
directly under the lens. A piece of glass is then positioned at a 45-degree angle in the axis of the
lens
-some light does go through the glass, but some also are reflected straight down onto the
subject/evidence
, -subjects/evidence located on mirrors or inside hollow cavities or curved items such as cups -
correct answer ✔✔Types of lighting:
Axial lighting
-light is reflected directly off the subject/evidence at a 20-degree angle (10 between the subject
and lens, 10 between light source and subject)
-creates very high contrast that may produce hot spots and/or cause the subject to lose detail
-minimizing shadows formed within the subject - correct answer ✔✔Types of lighting:
Direct reflective
-subject/evidence is surrounded by a cone-shaped tint using white paper, frosted acetate or
some other translucent material. Light source is directed at the tint from one or both sides
-assists in reducing shadows
-shiny and reflective surfaces - correct answer ✔✔Types of lighting:
Tint lighting
F/stop
-Maximize DOF by using narrower apertures (8, 11, 16 and 22 are most recommended)
Focal Length
-wide-angle lenses produce smaller lens openings which produce a wider depth of field
-the same f/stop value will result in different lens apertures/opening with different focal lengths
Camera-to-subject distance
-large f/stop values do not work for close-up photographs
-as you get closer to the subject, the DOF collapses
**Use hyperfocal focus when infinity is in the background** - correct answer ✔✔Factors that
affect DOF
Final Exam correctly answered to pass
The photographer controls the shutter speed and ISO and the camera controls the aperture -
correct answer ✔✔What does shutter priority mode mean?
The photographer controls the aperture and ISO and the camera controls the shutter speed -
correct answer ✔✔What does aperture priority mode mean?
-DOF increases
-Lower amount of light
-narrower DOF - correct answer ✔✔When going from f/8 --> f/11, what happens?
-normal focal length: 35mm
-decreasing focal length increases angle of view
-increasing focal length decreases angle of view
18mm = wide-angle lens; elongate
100mm = long lens; compression - correct answer ✔✔APS-C camera
-normal focal length: 50mm
-decreasing focal length increases angle of view
-increasing focal length decreases angle of view
You have a full frame camera at 100mm but want the same AOV as the crop sensor camera.
100/1.5=66mm
crop sensor ratio = 1.5 - correct answer ✔✔Full Frame camera
,blue - orange
violet - yellow
red - green
clear/UV - yellow - correct answer ✔✔Filter colors
this is the flash firing when the shutter is completely open - correct answer ✔✔What is the
purpose of sync speed?
-timed exposure
-painting with light
-aperture priority mode - correct answer ✔✔Methods to photograph dim-lit scenes
Matrix: average of entire scene
Spot: focus point on evidence and a circle around it - correct answer ✔✔Matrix vs. spot mode
A faster shutter speed, the closer the curtains open - correct answer ✔✔How does a faster
shutter speed relate to distance of the curtains opening/closing?
-one or more lights positioned at 45-degree angles that provide lighting directly to the
subject/evidence
-General evidence where size and shape are important - correct answer ✔✔Types of lighting:
Direct
-used a low-angle illumination of the subject/evidence
-position the light boo source to skim across the surface to highlight the raised areas
-assists in showing detail on the surface of the subject/evidence by creating shadows
,impression evidence such as tool marks, fingerprints, footwear and indented writing - correct
answer ✔✔Types of lighting:
Oblique
-uses light that has been bounced off a surface (generally white/neutral, but doesn't have to be)
The bounce produces a softer light that helps reduce shadows and provide even non-glare
lighting with low contrast
-subjects/evidence that are concave or convex - correct answer ✔✔Types of lighting:
Bounce lighting
-Uses an item placed between the light source and the subject/evidence to soften the light and
produce even illumination
-helps to reduce hot spots and glare
-shiny or reflective subjects/evidence - correct answer ✔✔Types of lighting:
Diffused
-uses light that illuminated the subject/evidence from behind and is directed through the
subject/evidence
-provides a shadow-free background
-transparent or translucent subjects/evidence such as fingerprints on a glass; watermarks on
paper - correct answer ✔✔Types of lighting:
Transmitted lighting
-uses a light source at 90-degrees from the axis of the lens with the subject/evidence located
directly under the lens. A piece of glass is then positioned at a 45-degree angle in the axis of the
lens
-some light does go through the glass, but some also are reflected straight down onto the
subject/evidence
, -subjects/evidence located on mirrors or inside hollow cavities or curved items such as cups -
correct answer ✔✔Types of lighting:
Axial lighting
-light is reflected directly off the subject/evidence at a 20-degree angle (10 between the subject
and lens, 10 between light source and subject)
-creates very high contrast that may produce hot spots and/or cause the subject to lose detail
-minimizing shadows formed within the subject - correct answer ✔✔Types of lighting:
Direct reflective
-subject/evidence is surrounded by a cone-shaped tint using white paper, frosted acetate or
some other translucent material. Light source is directed at the tint from one or both sides
-assists in reducing shadows
-shiny and reflective surfaces - correct answer ✔✔Types of lighting:
Tint lighting
F/stop
-Maximize DOF by using narrower apertures (8, 11, 16 and 22 are most recommended)
Focal Length
-wide-angle lenses produce smaller lens openings which produce a wider depth of field
-the same f/stop value will result in different lens apertures/opening with different focal lengths
Camera-to-subject distance
-large f/stop values do not work for close-up photographs
-as you get closer to the subject, the DOF collapses
**Use hyperfocal focus when infinity is in the background** - correct answer ✔✔Factors that
affect DOF
