Controls of a Camera
Exposure |
The amount of light that reaches the camera sensor, which affects how dark or bright the resulting image is, controlled by the aperture, shutter speed and ISO setting.
Aperture priority (A) mode |
The mode belonging to the camera in which the size of the aperture can be adjusted by the photographer and the shutter speed is determined by the camera.
Shutter priority (S) mode |
The mode belonging to the camera in which the shutter speed can be adjusted by the photographer and the aperture is determined by the camera.
Manual mode (M) |
The mode belonging to the camera in which the shutter speed and the aperture can be adjusted by the photographer directly.
Program mode |
The mode belonging to the camera that determines the shutter speed and aperture combination.
ISO
|
Derived from the Greek isos, meaning equal, ISO refers to the sensitivity of the sensor to light, with higher ISO values referring to more sensitive camera sensors. Doubling the ISO value extends the dynamic range of the photo (e.g., an ISO 200 setting will result in a “brighter” image than ISO 100). Common ISO settings range from 100 to 6400.
The opening of a lens’s diaphragm, which lets light pass through a lens.
The shutter speed is the amount of time in seconds (or fractions of a second) that the shutter remains open to expose the image sensor to light
Derived from the Greek isos, meaning equal, ISO refers to the sensitivity of the sensor to light, with higher ISO values referring to more sensitive camera sensors. Doubling the ISO value extends the dynamic range of the photo (e.g., an ISO 200 setting will result in a “brighter” image than ISO 100). Common ISO settings range from 100 to 6400.