Maybe you had the camera set in Auto Exposure, or Matrix/Evaluative metering and this is what you got. Now if you do not understand these terms I do have a class on basic DSLR and understanding the use of your camera. Now if you click on the image you can see what you can do with the Software Digital Darkroom and improve the image.
You can email at the link below
Copyright 2017 by Lou Cioccio