When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.
Your Canon Rebel T6’s light meter is smart, but it is not perfect. Snow looks grey, backlit portraits come out dark, and bright skies trick the camera into underexposing everything else. Canon T6 exposure compensation is the simple override that fixes all of these problems, and once you learn it, you will use it constantly. Here is how it works, when to use it, and the practical scenarios where it makes the biggest difference.
What Is Exposure Compensation?
Exposure compensation tells the camera to make the image brighter or darker than what its built-in light meter thinks is correct. You dial in a positive value (+) to brighten the image or a negative value (-) to darken it, measured in stops of light.
The Canon T6 allows exposure compensation from -5 to +5 stops in 1/3-stop increments. This gives you fine-grained control over brightness without switching to full Manual mode.
How the Camera’s Light Meter Gets Fooled
Your T6’s meter assumes every scene averages out to a medium grey (called 18% grey). This works perfectly for most photos. But scenes that are predominantly very bright or very dark confuse the meter because they do not average to medium grey.
A snow-covered landscape reads as too bright, so the meter underexposes, turning white snow into muddy grey. A dark concert stage reads as too dark, so the meter overexposes, blowing out the spotlights. Exposure compensation corrects these errors.
How to Use Canon T6 Exposure Compensation
Step-by-Step Instructions
Exposure compensation works in P (Program), Tv (Shutter Priority), and Av (Aperture Priority) modes. It does not work in fully automatic or scene modes, and it is unnecessary in Manual mode where you control everything directly.
Set your camera to P, Tv, or Av mode using the mode dial. Look through the viewfinder or at the rear LCD, you will see the exposure level indicator, which looks like a number line with marks from -3 to +3.
Press and hold the Av (exposure compensation) button on the back of the camera, it is the button with the +/- symbol. While holding it, rotate the Main Dial (the wheel near your right thumb). Turning it to the right adds positive compensation (brighter). Turning it to the left adds negative compensation (darker).
Take a test shot, review it on the LCD, and adjust further if needed. The compensation value stays set until you manually reset it to zero.
Important: Reset After Use
This is the most common mistake with exposure compensation, forgetting to reset it. After your tricky lighting situation is over, set the compensation back to 0. Otherwise, every photo you take afterwards will be too bright or too dark. Check the exposure indicator before each shoot to make sure it is centered.
When to Use Positive (+) Exposure Compensation
Dial in positive compensation when the scene is brighter than average and the camera is making your photos too dark.
Snow and Winter Scenes
Snow scenes are the classic example. The camera sees all that bright white and thinks the scene is overexposed, so it darkens the image. The result is grey, dingy-looking snow. Add +1 to +2 stops of compensation to keep snow looking white and clean.
Beach and Bright Sand
Like snow, bright sand reflects a lot of light and fools the meter into underexposing. Add +1 to +1.7 stops to maintain the bright, airy feel of a beach scene.
Backlit Portraits
When your subject stands in front of a bright window or the sun is behind them, the camera exposes for the bright background and turns your subject into a silhouette. Add +1 to +2 stops so the camera brightens the overall image, properly exposing your subject’s face.
White Products on White Backgrounds
Product photography with white backgrounds requires positive compensation. Without it, the camera turns your white backdrop into grey. Add +1 to +1.7 stops to keep whites white.
When to Use Negative (-) Exposure Compensation
Dial in negative compensation when the scene is darker than average and the camera is making your photos too bright.
Dark Subjects on Dark Backgrounds
A black cat on a dark couch, a musician on a dimly lit stage, or a dark car in a parking garage, the camera tries to brighten these scenes to medium grey, washing out the mood. Subtract -1 to -2 stops to preserve the dark atmosphere.
Sunset and Sunrise Skies
If your sunset photos look washed out with pale, faded colors, negative compensation deepens and saturates the sky. Try -0.7 to -1.3 stops to make those oranges and reds pop the way they looked to your eye.
Stage and Concert Lighting
Spotlights on a dark stage create extreme contrast. The camera often overexposes the lit areas trying to brighten the dark background. Use -1 to -2 stops to properly expose the performers under the spotlights while keeping the dark background natural.
Preserving Highlight Detail
When shooting scenes with bright highlights, clouds, reflections, shiny surfaces, negative compensation prevents those highlights from blowing out to pure white. You can brighten shadows later in post-processing, but blown highlights cannot be recovered.
Using AE Lock with Exposure Compensation
AE Lock (Auto Exposure Lock) is a complementary tool that freezes the current exposure reading so you can recompose your shot without the meter changing. On the T6, press the asterisk (*) button on the back of the camera to lock the exposure.
Combining AE Lock and Compensation
Here is a practical workflow: Point the camera at a mid-tone area of your scene (grass, a grey wall, skin). Press the * button to lock that exposure. Recompose your shot. If the result is still not right, add exposure compensation to fine-tune it.
This combination is powerful in tricky lighting. AE Lock gets you in the ballpark, and exposure compensation dials it in precisely.
Exposure Bracketing: The Automated Approach
If you are not sure how much compensation to apply, the T6’s Auto Exposure Bracketing (AEB) feature takes three shots at different exposures automatically, one at your set exposure, one brighter, and one darker. You can then choose the best one later.
To set AEB, go to the Shooting menu and find “Expo. comp./AEB.” Use the Main Dial to spread the three bracket points apart. A spread of 1 stop gives you three distinctly different exposures to choose from.
Practical Tips for Better Exposure
Check the histogram after tricky shots, it is more reliable than the LCD preview, which looks different depending on ambient light. A histogram bunched up on the left means underexposure. Bunched on the right means overexposure.
Start with small adjustments. A 1/3 or 2/3 stop change is often enough. You rarely need more than 2 stops of compensation in everyday shooting.
Learn your common scenarios. If you always shoot sunset photos, you will quickly memorize that -1 stop works for your favorite spot. If you photograph your kid’s hockey games at a brightly lit rink, you will know that +1 stop keeps the ice white. Experience builds exposure instinct faster than any guide.
Final Thoughts
Canon T6 exposure compensation is one of the most practical skills you can develop as a photographer. It takes seconds to adjust, costs nothing, and immediately improves your results in challenging light. The next time your photos come out too dark or too bright, reach for that +/- button before switching to Manual mode. More often than not, a quick dial of the Main Dial is all you need to nail the exposure your camera’s meter missed.
See also: 15 Best DSLR Cameras for Beginners, Canon Cameras with Flip Screen: A Comprehensive Guide, 5 Best Outdoor Home Security Cameras
