Metering

Directions: Fill in your note sheet!

Exposure refers to how bright or dark an image appears.
It is determined by three main settings: ISO, shutter speed, and aperture.
- - ISO controls the camera’s sensitivity to light.
  - Shutter speed is the amount of time the camera’s shutter is open.
  - Aperture refers to the size of the camera’s lens opening that lets light in.
Metering is how the camera measures the light in a scene using its built-in light meter.
Metering helps determine the correct exposure settings for a well-exposed photo.
A well-exposed photo is one that is not too dark and not too light.
ISO, shutter speed, and aperture form the exposure triangle.
- - Changing one setting affects the others to maintain the same exposure.
  - Example: If you increase shutter speed, you may need to open the aperture or raise the ISO.

Shutter Speed

...is like a curtain, controlling HOW much light is let in

controls HOW MUCH TIME your let light IN!

...is like the SIZE of the window

How much light you let light in

...is like having to tint a window or turn on the lights in the room

How SENSITIVE the sensor is to the light

...is like the eyelid, when and how long you let light into your eyes

...is like the pupil, it controls how MUCH light you let in thru the opening

...like having to put on sunglasses bc all other settings (aka squinting, and smaller pupil) is still too much

It works like a number in math. To the left of 0 is negative numbers or UNDEREXPOSED or TOO DARK

Metering is the Juggling or the balancing of

ISO

Aperture

Shutter Speed

Your meter is in your camera in the LCD screen and in the viewfinder.

You want to align the little white line with the center button / zero.

It works like a number in math. To the right of 0 is negative numbers or OVEREXPOSED or TOO BRIGHT.

Let's PLAY and PRACTICE

Make sure to adjust your meter for each!!! You want your meter as close to ZERO as possible for a well-exposed picture!

NOTE:

When you return:
- Create a folder on your desktop, labeled "metering"
- Load your photos from your SD card to the folder on your desktop called "metering"
To see the image metadata, select your image in the folder and click command i.
(MAC) Drag this handout from the website directly to your PS icon
(WINDOWS) Right click on the digital handout and copy or save as...
Open PS and create a document:
- 10x8 inches
Drag each photo from your folder to the appropriate space
Check the metadata and type in the metering information
Done? Go to

FileSave AsYour name meteringFormat >JPEG

For your next assignment:

Grab an object or partner
Go outside and find a well lit spot (OPEN SHADE)
Make sure the camera is on M for manual
Focus your lens (make sure it's set to MF) on the subject (person or object) and set your aperture (Fstop) to f/3.5
- Adjust the shutter speed and ISO if needed for perfect exposure (meter at ZERO)
- Take a photo!
Change the fstop to F/5.6
- Adjust the shutter speed and ISO if needed for perfect exposure (meter at ZERO)
- take a photo!
Repeat until you've taken a photo of all above fstops.
Transfer your photos from your SD card to a folder on your desktop labeled "Aperture"
Place your images on to the digital handout (above) in PS
Use the text tool to type the shutter speed used for each photo.
- If you forgot how to move your photos from your SD card to your PC, review THESE slides (for Windows only)
Done? Go to:
- File
- Save a copy
- Title: your name Aperture
- Format >JPEG
Submit it to Canvas in the Aperture assignment!

Page updated

Report abuse