Rabu, 22 Juni 2011

The Camera does not Select

When we look at something we have an extraordinary ability to concentrate on the main
item of interest, despite cluttered surroundings. Our natural ‘homing device’ includes turning the head, focusing the eyes and generally disregarding any part of the scene considered unimportant.

Talking to a friend outside their house, you hardly register details of the building behind, but the camera has no brain to tell it what is important and unimportant. It cannot discriminate and usually records too much – the unwanted detail along with the wanted. This becomes all too apparent when you study the resulting photograph. Drainpipes and brickwork in the background may appear just as strongly as your friend’s face . . . and how did that dustbin appear in the foreground?



You therefore have to help the camera along, perhaps by changing your viewpoint or filling up the frame (if your camera will focus close enough). Perhaps you should wait for a change in lighting to pick out your main item from the rest by making it the brightest or the most contrasting color in the picture. Or you might control your zone of sharpness (a device called depth of field or DOF, in order to limit clear detail to one chosen spot, as is the case in . You have to train your eyes to search the scene for distractions. When looking through the viewfinder, check the background, midground and foreground detail. Above all, always make a quick scan of everything in the viewfinder before pressing the button.

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