Here's an example of how the increase in contrast can be detrimental to your photography.
Let's say you're taking a picture of a friend in her garden.
She has 1940s red lipstick, red hair, green eyes, and two heirloom tomatoes, all under the shade of her straw hat.
Later, when you look at the photograph, she is barely discernable.
The shadow created by her hat has become very dark.
Photographers have to train themselves to look for shadows.
And then, we must decide whether to use the methods on the following pages to brighten any shadows.