Value is a range of lightness and darkness within an image.
In order for any element of design to be seen there must be value contrast. When we make an element darker we are shading and when we are making it lighter we are tinting.
A successful photo uses the full range of values. Artists check this by using a value scale. A value scale is a tool that shows the gradual change from the lightest value or white to its darkest value of black.
In the above assignment I used Adobe Photoshop to edit the contrast and value of each one of my images to create a full range value scale.