All at once camera doesn’t take a picture. Yes, at first a decision has to be made by firm observation using a viewfinder. Through the view finder, a photographer looks to a composed picture and brings something in focus. These can be optical as well as electronic. But most the optical once used are mounted in reverse to see with the eye of the camera. It has full resolution and an electronic one gives the advantage of reverse feature. It also provides with the basic composition featuring grid that helps you to see how elements in your picture stand. Other detailed features are as per design of the viewfinder like high end compact camera is in electronic and half mirror prism in optical one…
