Shooting in full manual mode will always be the best way to get the most creative shot since you are in control of everything. But there are instances when you just do not have the time to fiddle around with the proper combination of ISO, aperture and shutter speed. On these occasions, you have to rely on your camera’s metering system to get you the correct exposure.
All light meters, including in-camera meters, are designed to give you a reading that will make the subject have the same tone as a 15% gray card. Manufacturers designed meters to give you an average reading on an average or neutral subject. This is very important to keep in mind when relying on your camera’s different metering modes.
