Instant Exposure Check How And Why To Use Your Histogram One of
the main benefits of using a digital camera is being able to
evaluate an image right after exposure in the LCD on the back.
However, being so small, most LCDs are not as critical as you
might like for checking sharpness or even expressions. Some
allow you to zoom in, making them more useful in that regard.
For me, the main advantage of the LCD is checking the exposure.
Just as with film photography, correct exposure is key to
quality images. In some ways, overexposure is more problematic
in digital, as the sensor tends to clip data above a certain
threshold. Overexpose can result in lost highlight detail and
tonal texture, and while there are ways to remedy this most
corrections are at best difficult to obtain. But there is hope
for exposure problems if you catch them using the histogram, a
graphic representation of the gray scale values from 0 (black)
to 255 (white). "Expose To The Right" Rule Is there an ideal
histogram? It depends on the image