Dull looking photographs

Do you photographs sometimes look dull and lifeless? Maybe you shot the photo during a grey day. The lightness and shadow overall is great but the image lacks punch. There is an easy fix to this. Try shifting the color and the contrast. Just by adding yellow to your photograph you can see the entire image come to life. Then if you up the contrast the images will really start to pop. Try it on one of those gray photos and see what happens.