The primary effect of aperture is to regulate the amount of light passing through the camera lens. The secondary effect is to alter the depth-of-field. It’s the same with shutter speed. The primary effect is to regulate the quantity of light that reaches the sensor when you take a photo. Learn more at and… Read More

ISO is a measure of the sensitivity of the camera’s sensor to light. The lowest ISO setting of most digital cameras is 100 or 200. At this setting, the camera’s sensor is least sensitive to light. This is the sequence of ISO numbers: 100, 200, 400, 800, 1600, 3200, 6400 On some cameras the ISO… Read More