Exposure time is the length of time that the camera’s shutter is open, allowing light to reach the sensor. It is one of the three main exposure controls, along with aperture and ISO. Exposure time is measured in seconds or fractions of a second.
The correct exposure time will vary depending on the lighting conditions. In bright conditions, you will need a faster shutter speed to avoid overexposing the image. In low-light conditions, you will need a slower shutter speed to allow more light to reach the sensor.
