Likewise, an exposure compensation of -1 makes the image 1 stop darker (half as bright).
To quickly correct any errors, you should take advantage of exposure compensation. This is usually represented by a +/- symbol on the camera. An exposure compensation of +1 will make the image 1 stop brighter (AKA twice as much) compared to how the camera would otherwise expose the image. Likewise, an exposure compensation of -1 makes the image 1 stop darker (half as bright).