Friday, September 29, 2006
Histogram Display in Digital Camera
What is a histogram?
It is the display of a graph in the LCD monitor of your camera to indicate the brightness distribution of the image you want to capture .It gives you an idea as to whether the image gets properly exposed .It helps you to know the
shadows and highlights and leads you to balance the exposure by relocating the subject or camera if possible,
improve lighting if necessary and manually adjust the exposure.
The horizontal axis of the graph is to indicate the brightness distribution and the vertical axis stands for the number
of pixels.
If the image of the subject is too dark, the peak of the graph appears at the far left, descends down and
moves towards the far right.
If the image of the subject is too bright, the peak of the graph appears at the far right, descends down and
moves towards the far left.
When the exposure is well balanced, the peak of the graph gets positioned in the middle, descends down on
both sides more or less uniformly and terminates at either end.
A clear understanding of histogram and adjustments to be made with its guidance will improve your skills
in capturing fine images with digital camera at the field. It will also enrich your editing skills at the
computer desk.
It is the display of a graph in the LCD monitor of your camera to indicate the brightness distribution of the image you want to capture .It gives you an idea as to whether the image gets properly exposed .It helps you to know the
shadows and highlights and leads you to balance the exposure by relocating the subject or camera if possible,
improve lighting if necessary and manually adjust the exposure.
The horizontal axis of the graph is to indicate the brightness distribution and the vertical axis stands for the number
of pixels.
If the image of the subject is too dark, the peak of the graph appears at the far left, descends down and
moves towards the far right.
If the image of the subject is too bright, the peak of the graph appears at the far right, descends down and
moves towards the far left.
When the exposure is well balanced, the peak of the graph gets positioned in the middle, descends down on
both sides more or less uniformly and terminates at either end.
A clear understanding of histogram and adjustments to be made with its guidance will improve your skills
in capturing fine images with digital camera at the field. It will also enrich your editing skills at the
computer desk.
