In this lesson, you will learn about the unique relationship between the camera and light, also known as exposure.

2. Describe the
relationship
between the
camera and light
and how to
control them.
Choose the
correct settings
for a correctly
exposed image.
Create properly
exposed photos
with varying
depths of fields.

4. The Exposure Triangle
• Aperture
• Shutter Speed
• ISO

6. Aperture
• Hole in the center of the lens that allows variable amounts of light into the
camera.
• High f/stop = small opening.
• Small f/stop =large opening.
• A measure of the size of the opening.

8. f/stops
• Essentially a fraction.
• Example:
• F/2 = aperture is 1/2 as big across as the lens is long.

10. Understanding Light and Aperture
• Dark room = smaller f/stop (larger opening)
• Lets more light in.
• Bright sunlight = larger f/stop (smaller opening)
• Lets less light in.

12. Side Effects of Aperture
• Depth of field
• Depth of field
• Effects the sharpness of images.
• Relied on a number of factors
• Lens aperture size.
• Lens focal length.
• Distance between the subject and the camera.
•

16. Shutter Speed
• Measurement of time that a camera's shutter is open.
• Much more of a straightforward.

18. Measuring Shutter Speed

19. Side Effects of Shutter Speed
• Camera shake

21. ISO
• International Organization of Standards
• Measure of the sensitivity of film or a digital sensor to light.

22. Side Effects of ISO
• Drawback:
• The higher the ISO the more grainier the image.
• This should be the last thing you adjust.
• Try to keep the ISO as close to 100 as possible.

25. Metering
• Process of reading light in order to determine the settings needed
• Overexposed = not enough light
• Underexposed = too much light

27. Describe the
relationship
between the
camera and light
and how to
control them.
Choose the
correct settings
for a correctly
exposed image.
Create properly
exposed photos
with varying
depths of fields.