Exposure Review

What does the ISO control?

• Depth of field

• Noise

• Pixel Contrast

• Motion

Answer explanation

Aperture: Depth of Field

Shutter speed: Motion

ISO: Noise / Film Grain

In which of the following scenarios would a photographer likely choose to use a lower ISO setting?

• In a dimly lit room without a tripod

• During an outdoor night shoot

• While photographing a fast-moving object

• On a bright sunny day

You were previously shooting at night. Your ISO is set to 1600. You've set your aperture to f/8 and your shutter to 1/500, but your picture is overexposed by 3 stops. What should your new ISO setting be?

• 12800

• 800

• 200

• 3200

Answer explanation

Since the picture would be overexposed at 3 stops, you need to turn your ISO down by 3 stops.

1600 > 800 > 400 > 200

What does aperture control? Select two.

• Brightness/darkness of an image

• The depth of field.

• The focal point.

• Motion blur.

• Digital Noise.

Answer explanation

Aperture controls depth of field and the overall exposure.

Smaller f-number/wider aperture = more light/thinner depth of field

Larger f-number/smaller aperture = less light/deeper depth of field.

You want to take a portrait with a thin depth of field. Your settings are: ISO 100, 1/125, f/8. Which setting to do you change and what do you change it to?

• You would change f/8 to f/22.

• You would change 1/125 to 1/500.

• You would change f/8 to f/2.8.

• You would change ISO 100 to ISO 800.

• You would change 1/125 to 1/30.

Answer explanation

Changing f/8, which doesn't give you a thin enough depth of field for your portrait, would need to be opened. F/2.8 is a wider aperture which results in a thinner depth of field.

Shutter speed controls exposure (brightness/darkness) but what other factor does shutter speed control?

• Depth of Field

• Digital Noise

• Motion blur

• The point of focus

Answer explanation

The shutter controls the TIME that light is allowed into the camera. As long as the shutter is open, light is recorded, no matter what moves or doesn't.

You're photographing a portrait and want to have the subject in sharp focus but the background softly blurred. What type of aperture setting would you likely choose?

• f/22

• f/16

• f/4

• f/11

You're on a hiking trip and come across a stunning landscape. You want everything from the nearby flowers to the distant mountains to be in focus. Which aperture setting would you likely use to achieve a large depth of field?

• f/1.8

• f/3.5

• f/8

• f/2.8

You are photographing a hummingbird in flight and want to freeze its rapid wing movement to capture a sharp image. What shutter speed would you likely choose?

• 1/30

• 1/60

• 1/500

• 1/6

You're near a waterfall and want to create a beautiful image where the water appears silky and smooth. Which shutter speed might you use to achieve this effect?

• 1/1000

• 1/15

• 1/500

• 1/250