FIS 335 Photography Final Exam Flash
Cards (all lectures) fully solved already
passed
Guide Numbers - correct answer ✔✔A measure of the distance at which the flash can illuminate
a subject; relative output power
Guide number = - correct answer ✔✔f/stop x distance (meter)
Standard guide number for CSI - correct answer ✔✔120
What is the rule of on camera flash? - correct answer ✔✔Do not use it unless you have to
Guide numbers vs DOF vs aperture - correct answer ✔✔Higher guide number = narrower
apertures = more DOF
Flash Sync Speeds - correct answer ✔✔Shutter speed at which the cameras should be set when
using the electronic flash
- Shutter speed completely opens when the flash fires, the entire scene receives light and the
light is reflected before the shutter closes again
- Do not go less than 1/20 seconds
What happens if the shutter speed of the camera is faster than the sync speed? - correct answer
✔✔Part of the shutter will cover the sensor
What happens if the shutter speed of the camera is slower than the sync speed? - correct
answer ✔✔A blurry photograph may result as well as the "ghosting" effect
,Nikon D7500 sync speed - correct answer ✔✔1/250 seconds
Flash output __________ as aperture becomes _________. - correct answer ✔✔Shrinks
Narrower
DX symbol on flash unit - correct answer ✔✔Crop sensor indicator
FX symbol on flash unit - correct answer ✔✔Full sensor
Every time that the flash power decreases in size that is changing the exposure of the
photograph by _______. - correct answer ✔✔-1 stops
Every time the flash is fired it is typically fired at... - correct answer ✔✔Its normal duration, 1/1,
which is also full power output
This is the slowest duration of the flash
What level of power is typically used each time the flash is fired? - correct answer ✔✔Full
power
When ISO is 100 or 400, the shutter speed of the camera = the sync speed of the camera, and
the lighting at the scene is the flash unit, what controls the exposure of the photograph? -
correct answer ✔✔f/stop
__________ is related to the flash duration. - correct answer ✔✔Intensity
Our Nikon SB-5000 full duration = 1/1000 seconds which is full strength
,What should the relationship of the flash hood lens be to the distance zoom of the camera? -
correct answer ✔✔They should equal each other
Flash unit screen display - correct answer ✔✔Large number next to feet = object distance
To the left = overexposed
To the right = underexposed
What do you do if the evidence is located closer than the full intensity of the flash unit allows? -
correct answer ✔✔Change the intensity which in turn changes the duration
Flash speed vs. Intensity - correct answer ✔✔Faster flash = dimmer flash
How should you position yourself and the flash unit when using? - correct answer ✔✔- Keep
the flash unit at least 2 feet away (generally not designed to be used this closely)
- Avoid bending your arms at the elbow
- Keep the arms straight
What happens if you use the flash too close? - correct answer ✔✔The photograph tends to
come out overexposed
How should you use flash when you are taking a macro photograph? - correct answer ✔✔Use
very oblique angles and bounce flash if needed
What is one thing you should always do when using flash unit with regards to capturing the
proper exposure? - correct answer ✔✔Bracketing
Where is the intensity indicator on the flash display screen? - correct answer ✔✔Top left corner
, What do you do if the evidence is in between the distances that are allowed by an intensity? -
correct answer ✔✔Change your location to change the distance and alter your f/stop value
What does flash control? - correct answer ✔✔Motion
At what flash speed can most motion be stopped? - correct answer ✔✔1/1000 seconds
Why does flash stop motion? - correct answer ✔✔Because the camera body takes the flash as
priority
Manual flash provides ____________ but does not ____________ - correct answer ✔✔-
Provides the right light for the distance that the object is away from you
- But does not take the scene reflective nature into account
The camera assumes that _____________________ is happening when using the flash. - correct
answer ✔✔Assumes that the flash is pointed directly at the evidence
What can you do if the scene is too reflective and the flash is being used? - correct answer
✔✔Remove the flash unit from the hot shoe
What is manual flash exposures based upon? - correct answer ✔✔The inverse square law
Inverse square law equation - correct answer ✔✔Intensity = 1/distance^2
What is considered to be a "normal" room? - correct answer ✔✔- Common living room or
bedroom
- 10' x 12'
- White ceiling
Cards (all lectures) fully solved already
passed
Guide Numbers - correct answer ✔✔A measure of the distance at which the flash can illuminate
a subject; relative output power
Guide number = - correct answer ✔✔f/stop x distance (meter)
Standard guide number for CSI - correct answer ✔✔120
What is the rule of on camera flash? - correct answer ✔✔Do not use it unless you have to
Guide numbers vs DOF vs aperture - correct answer ✔✔Higher guide number = narrower
apertures = more DOF
Flash Sync Speeds - correct answer ✔✔Shutter speed at which the cameras should be set when
using the electronic flash
- Shutter speed completely opens when the flash fires, the entire scene receives light and the
light is reflected before the shutter closes again
- Do not go less than 1/20 seconds
What happens if the shutter speed of the camera is faster than the sync speed? - correct answer
✔✔Part of the shutter will cover the sensor
What happens if the shutter speed of the camera is slower than the sync speed? - correct
answer ✔✔A blurry photograph may result as well as the "ghosting" effect
,Nikon D7500 sync speed - correct answer ✔✔1/250 seconds
Flash output __________ as aperture becomes _________. - correct answer ✔✔Shrinks
Narrower
DX symbol on flash unit - correct answer ✔✔Crop sensor indicator
FX symbol on flash unit - correct answer ✔✔Full sensor
Every time that the flash power decreases in size that is changing the exposure of the
photograph by _______. - correct answer ✔✔-1 stops
Every time the flash is fired it is typically fired at... - correct answer ✔✔Its normal duration, 1/1,
which is also full power output
This is the slowest duration of the flash
What level of power is typically used each time the flash is fired? - correct answer ✔✔Full
power
When ISO is 100 or 400, the shutter speed of the camera = the sync speed of the camera, and
the lighting at the scene is the flash unit, what controls the exposure of the photograph? -
correct answer ✔✔f/stop
__________ is related to the flash duration. - correct answer ✔✔Intensity
Our Nikon SB-5000 full duration = 1/1000 seconds which is full strength
,What should the relationship of the flash hood lens be to the distance zoom of the camera? -
correct answer ✔✔They should equal each other
Flash unit screen display - correct answer ✔✔Large number next to feet = object distance
To the left = overexposed
To the right = underexposed
What do you do if the evidence is located closer than the full intensity of the flash unit allows? -
correct answer ✔✔Change the intensity which in turn changes the duration
Flash speed vs. Intensity - correct answer ✔✔Faster flash = dimmer flash
How should you position yourself and the flash unit when using? - correct answer ✔✔- Keep
the flash unit at least 2 feet away (generally not designed to be used this closely)
- Avoid bending your arms at the elbow
- Keep the arms straight
What happens if you use the flash too close? - correct answer ✔✔The photograph tends to
come out overexposed
How should you use flash when you are taking a macro photograph? - correct answer ✔✔Use
very oblique angles and bounce flash if needed
What is one thing you should always do when using flash unit with regards to capturing the
proper exposure? - correct answer ✔✔Bracketing
Where is the intensity indicator on the flash display screen? - correct answer ✔✔Top left corner
, What do you do if the evidence is in between the distances that are allowed by an intensity? -
correct answer ✔✔Change your location to change the distance and alter your f/stop value
What does flash control? - correct answer ✔✔Motion
At what flash speed can most motion be stopped? - correct answer ✔✔1/1000 seconds
Why does flash stop motion? - correct answer ✔✔Because the camera body takes the flash as
priority
Manual flash provides ____________ but does not ____________ - correct answer ✔✔-
Provides the right light for the distance that the object is away from you
- But does not take the scene reflective nature into account
The camera assumes that _____________________ is happening when using the flash. - correct
answer ✔✔Assumes that the flash is pointed directly at the evidence
What can you do if the scene is too reflective and the flash is being used? - correct answer
✔✔Remove the flash unit from the hot shoe
What is manual flash exposures based upon? - correct answer ✔✔The inverse square law
Inverse square law equation - correct answer ✔✔Intensity = 1/distance^2
What is considered to be a "normal" room? - correct answer ✔✔- Common living room or
bedroom
- 10' x 12'
- White ceiling
