Either mechanical and/or electronic shutters are possible. Mechanical systems can use a leaf (or iris) shutter or curtain shutter. In digital cameras a third alternative is also possible: the electronic shutter. This works by activating and then deactivating the CCD so that no further light can be recorded, regardless of whether light is hitting the CCDA CCD (Charge-Coupled Device) is an integrated circuit containing an array of linked or coupled capacitors and it is one of two types of sensors used in digital cameras and other optical devices. The other one being CMOS. CCDs are considered to the older technology and although most current digital cameras use CMOS sensors they are still widely used and many photographers seek out older cameras with CCD sensors because of their colour and image characteristics. CCD image sensors are widely used in professional, medical, and scientific applications where high-quality image data is required CCDs use a global shutter, which exposes the entire image simultaneously. This can lead to blur if any motion occurs in the image during exposure, but a high shutter speed prevents this problem. Whereas CMOS sensors are equipped with ‘rolling shutters,’ which expose different parts of the frame at different points in time. This can lead to skew, wobble and partial exposure in photographs. CCD sensors create low noise images but consume 100 times more power than a similar CMOS sensor. More. The shutter controls the exposure time, which can range from thousandths of a second to several minutes or more. Fast shutter speeds freeze action, slow speeds are more suited to stationary subjects. A tripod is recommended for slow exposure shots to avoid camera shake, or IBISIBIS, or In-Body Image Stabilisation, is a feature found in some digital cameras that helps to reduce the effects of camera shake when capturing images or videos. It works by using sensors to detect any movement or shake in the camera and then compensates for it by moving the camera's sensor in the opposite direction of the movement. This results in sharper and clearer images and videos, especially in low light situations, slow shutter speeds, or when using longer focal lengths. More.
