How to Use Shadows & Highlights Adjustments Tool
Sometimes, no matter how careful you are with your DSLR setting,
certain parts of a photo can look washed out and over exposed
or have dark patches from shadows. This is especially true where
there is a lot of white space, like a wedding dress or snow, or
when taking a photo where there are deep shadows, such as a cliff
face.
The Photoshop Shadows and Highlights adjustment feature can help
make a photo look good and become a saver instead of going into
the trash bin.
Take a look at this image below. The photographers shirt is so
white it has caused an over exposed look and some of the detail
is gone. We will walk through the steps that you can employ to
bring the balance back to this image.

Let's take the quick tutorial for making image adjustments with
the Shadow and Highlight feature.
Step 1
With the image open in Photoshop:
As you can see in the finished photograph below this tool has
brought out the pattern in the white shirt. Lessened the glare
and improved the overall color of the photograph.
Now with a crop and sharpen, this image is good enough to keep.

Again we reiterate that all photos will be different and you
will need to play with the slider of both the Shadows and the
Highlights adjuster. We suggest putting both to zero to start
and go from there.
With a little practice, this photoshop tool will become one of
your best friends and give new life to all your photographs.
We don't just use this on images that look a little over exposed,
we take all images into the adjustments feature and see if they
can be improved. It takes very little time and the results can
be amazing.