Light And Depth Of A Camera

The depth of field defines the zone where all elements show clearly from foreground to background. Three factors control the depth of field in an image, they are the distance of the subject, the focal length, and the aperture used to capture the photograph. For people using compact digital cameras, one of the subjects of out of the ordinary interest is the depth of field because depth of field is more easily said than done to control with a compact digital camera than with earlier conventional analog film cameras. The minute imaging sensors of compact cameras need the use of short focal lengths, and this in sequence gives these compact digital cameras an extraordinarily long depth of field when compared to other cameras. Thereby, with intent obtaining a shallow depth of field is more complicated.

Considering a general acceptable fact, the depth of field decreases, as the image gets nearer to the camera. This means that as the focal point reaches closer to the lens, the achievable scope of the depth of field ebbs. On the other side, if the image is far enough distant from the camera, and for digital cameras, this must not be very far, the depth of field approaches out to infinity. Another important point to be noted is that the depth of field is proportional to the lens opening.

Having discussed the above important aspects of the light and depth of field of a digital camera, it is clear that the minute details make such great subjects whose knowledge becomes equally important for making appropriate use of the fantastic device, the digital camera! And the digital camera, light and depth of field comes out to be such important factors that can make all the difference if a photographer remains oblivious about this knowledge. A small factor thus can meal a big divergence!

By Jakob Jelling
http://www.snapjunky.com

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