I posted previously about the importance of exposure and
metering in photography. Metering is the algorithm that is used
to decide how to expose the picture. The camera then chooses the
camera settings to achieve the optimal result based on what the
meter tells it to do. When adjusting exposure, there are three
key elements that can be modified. In another post, I will go
into more details on these. Shutter Speed – This parameter
controls how long the sensor (or film) is exposed to light. The
longer the exposure, the more light reaches the sensor and the
brighter the image. However, long exposures bring challenges
particularly when photographing items that are not stationary.
This is measured as a fraction and so smaller number are slower
shutter speeds. For example 60 is 1/60th of a second and is
slower than 1000 which is 1/1000th of a second. Aperture – This
controls how how much light the lens allows through. Think of it
as a door into a dark room. A wide open door will allow much
light while a cracked doo