If my son wants to take a picture of something, all he needs to do is point his smartphone, tablet, digital camera or webcam at the object and click a button. In about a second, he’ll have a completed digital image he can edit, print or share with the world.
When his dad was growing up, most pictures were taken on film cameras with two dozen shots per roll and no ability to see them until they were developed. Sometimes, it would be weeks or months before you finished a roll and had it developed. Even Polaroid pictures took several minutes to appear. By that time, if someone had red eye or was looking away in a shot, it was too late to capture another image.