Your digital SLR camera is a bundle of some of the most advanced pieces of optical technology. It involves, metering, auto-focusing, image stabilization and a plethora of other refinements. In this article we are going to delve about auto-focusing.
Auto-focusing is a technique which allows a camera to lock focus on a point with the aim to effect the maximum contrast. Note – contrast and focus does have a relationship. When you press down the shutter button the camera does two things. It tries to adjust the position of some of the elements inside the lens to check if it produces a sharp contrast. This it does by using tiny phase detection sensors located at the back of the camera and the tiny auto-focusing motors that move the focusing elements into position. Continue Reading