9 Ways to Customize Your Canon Rebel t5i
Reduce the number of exposure stops.
To increase exposure by one stop means to adjust the aperture or shutter speed to allow twice as much light into the camera as the current settings permit. To reduce exposure a stop, you use settings that allow half as much light. Doubling or halving the ISO value also adjusts exposure by one stop.
If you prefer, you can tell the camera to present exposure adjustments in half-stop increments so that you don't have to cycle through as many settings each time you want to make a change. Make your preferences known via Custom Function 1.