Pmd Photography Off Camera Flash Quiz (In Manual Mode, No Ttl)
Questions related to camera sync speed, high speed sync, key shifting and adjustments to camera and flash for proper exposure
Questions and Answers
- 1.
How will Key shifting affect your image?
- A.
Increase the noise of your image
- B.
Affect the ambient exposure of your image
- C.
Affect the exposure on your subject exposed by the flash
Correct Answer
B. Affect the ambient exposure of your imageExplanation
Key shifting refers to the adjustment of the main light source in photography. By shifting the key light, the overall exposure of the image can be altered. Therefore, it will affect the ambient exposure of the image. This means that the brightness and overall lighting conditions of the entire scene will be affected by the key shift. It will not directly impact the noise or the exposure on a specific subject exposed by the flash.Rate this question:
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- 2.
In this image, how does changing the aperture on your camera affect your image; assuming you have properly exposed for your ambient light and properly exposed your flash for your foreground subject?
- A.
Only the exposure on the foreground subject is affected
- B.
The ambient and foreground are both affected
- C.
Only the exposure of the ambient light is affected
Correct Answer
B. The ambient and foreground are both affectedExplanation
Changing the aperture on the camera affects both the ambient light and the foreground subject. The aperture controls the amount of light that enters the camera, so adjusting it will impact the overall exposure of the image. If the aperture is widened, more light will be allowed in, resulting in a brighter image for both the ambient light and the foreground subject. Conversely, if the aperture is narrowed, less light will be allowed in, resulting in a darker image for both the ambient light and the foreground subject. Therefore, the correct answer is that both the ambient and foreground are affected by changing the aperture.Rate this question:
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- 3.
How would flash to subject distance affect this image?
- A.
Exposure on subject will decrease
- B.
Exposure on subject and ambient light will decrease
- C.
Ambient light will compensate for the decreased flash
Correct Answer
A. Exposure on subject will decreaseExplanation
If the flash to subject distance increases, the exposure on the subject will decrease. This is because the flash will have to cover a larger area, resulting in less light reaching the subject. As a result, the subject will appear darker in the image.Rate this question:
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- 4.
How will increasing the ISO affect a properly exposed image which incorporates both ambient light and flash?
- A.
Ambient exposure and noise will increase
- B.
Ambient, subject exposed with flash and noise will increase in direct proportion to each other
- C.
Exposure to subject exposed with flash will increase
Correct Answer
B. Ambient, subject exposed with flash and noise will increase in direct proportion to each otherExplanation
Increasing the ISO will increase the sensitivity of the camera sensor to light. This means that both the ambient light and the flash will have a stronger impact on the image, resulting in an increase in the exposure of the ambient light as well as the subject exposed with flash. However, increasing the ISO also tends to introduce more noise into the image, so the noise level will also increase in direct proportion to the increase in exposure.Rate this question:
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- 5.
What would you adjust to decrease the ambient exposure in this image?
- A.
Increase the shutter speed
- B.
Increase the shutter speed and turn down the flash
- C.
Decrease your ISO
Correct Answer
A. Increase the shutter speedExplanation
To decrease the ambient exposure in the image, increasing the shutter speed is the correct adjustment. Shutter speed refers to the amount of time the camera's shutter remains open, determining the duration of light exposure. By increasing the shutter speed, the camera will allow less light to enter, resulting in a darker image. This adjustment is effective in reducing the ambient exposure without affecting other factors such as ISO or flash settings.Rate this question:
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- 6.
How would you increase the exposure on your subject exposed with flash?
- A.
Decrease shutter speed
- B.
Decrease the shutter speed and increase your F-stop
- C.
Decrease your F-stop
Correct Answer
C. Decrease your F-stopExplanation
Decreasing the F-stop will increase the size of the aperture, allowing more light to enter the camera. This will result in a brighter exposure, which is beneficial when using flash as it helps to properly expose the subject. By decreasing the F-stop, the camera will allow more light to reach the sensor, resulting in an increased exposure on the subject.Rate this question:
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- 7.
What are the limitations of sync speed when using off camera flash?
- A.
You can't shoot long exposure images
- B.
You have to work with a fixed aperture
- C.
You can't increase your shutter speed past sync speed
Correct Answer
C. You can't increase your shutter speed past sync speedExplanation
The limitations of sync speed when using off-camera flash include the inability to shoot long exposure images, the need to work with a fixed aperture, and the inability to increase the shutter speed beyond the sync speed. This means that the photographer is restricted in terms of exposure time, aperture adjustments, and freezing motion in fast-paced scenes.Rate this question:
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- 8.
Opening up the aperture in this image will affect the image how?
- A.
Make the entire image darker
- B.
Make the entire image brighter
- C.
Only affect the flash lit subjects
Correct Answer
B. Make the entire image brighterExplanation
Opening up the aperture refers to increasing the size of the aperture, which allows more light to enter the camera. When more light enters the camera, it results in a brighter image overall. Therefore, opening up the aperture will make the entire image brighter.Rate this question:
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- 9.
Adjusting the shutter speed in this image will affect what?
- A.
Change the ambient exposure
- B.
Affect the exposure of the entire image
- C.
Affect the exposure of the flash lit subject
Correct Answer
A. Change the ambient exposureExplanation
Adjusting the shutter speed in this image will change the ambient exposure. Shutter speed refers to the amount of time that the camera's shutter remains open, determining how long the image sensor is exposed to light. By adjusting the shutter speed, more or less light can enter the camera, thus affecting the overall exposure of the image. This means that changing the shutter speed will impact the brightness or darkness of the entire image, including both the flash-lit subject and the background.Rate this question:
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- 10.
Increasing the flash output power will affect what on your subject?
- A.
Create harsh shadows
- B.
Increase the overall surface area the flash covers
- C.
Overexpose your subject
Correct Answer
C. Overexpose your subjectExplanation
Increasing the flash output power will overexpose your subject. When the flash output power is increased, the intensity of the light emitted by the flash increases as well. This can result in an excessive amount of light hitting the subject, causing it to appear too bright and lose details. Overexposure can lead to washed-out colors, loss of contrast, and loss of texture in the subject.Rate this question:
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- 11.
Increasing the ISO in this image will only increase the exposure of the ambient light
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Increasing the ISO in this image will not only increase the exposure of the ambient light. This is because increasing the ISO also amplifies the noise in the image. So while it may increase the overall brightness, it will also introduce unwanted noise, reducing the image quality. Therefore, the statement is false.Rate this question:
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- 12.
When shooting outdoors using daylight and flash at the same time, do we worry about matching colour temperatures?
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
When shooting outdoors using daylight and flash at the same time, we do not need to worry about matching color temperatures. This is because modern cameras and flashes are designed to automatically adjust and balance the color temperatures of both light sources. The camera's white balance settings can also be adjusted to further ensure accurate color reproduction. Therefore, there is no need for concern about color temperature matching in this scenario.Rate this question:
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- 13.
If your shooting at F2.8 and want to maintain that DOF but your flash lit subject is under exposed, what do you adjust?
- A.
Increase flash output power
- B.
Increase your ISO
- C.
Decrease your shutter speed
Correct Answer
A. Increase flash output powerExplanation
When shooting at F2.8 and wanting to maintain the depth of field (DOF) but the flash-lit subject is underexposed, the correct adjustment would be to increase the flash output power. This will provide more light to properly expose the subject without affecting the DOF. Increasing the ISO would make the image brighter overall but could also introduce more noise. Decreasing the shutter speed would allow more ambient light in, potentially affecting the DOF and causing motion blur.Rate this question:
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- 14.
Does changing your shutter speed affect the exposure of your flash lit subject?
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Assuming your dont set your shutter speed to a ridiculous length of timeRate this question:
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- 15.
If you properly expose an image with a bare strobe, introducing an umbrella with nothing changing (shutter speed, aperture, flash output power, etc) will affect what?
- A.
Underexpose the flash lit subject
- B.
Soften the shadows on the flash lit subject
- C.
Increase the spread of light on the subject
Correct Answer
A. Underexpose the flash lit subjectExplanation
Adding an umbrella to a bare strobe will increase the spread of light on the subject. This is because the umbrella acts as a diffuser, spreading the light from the strobe over a larger area. However, in this case, nothing is changing apart from the addition of the umbrella. Therefore, the flash lit subject will be underexposed because the light from the strobe will be spread out more, resulting in less light reaching the subject.Rate this question:
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