You can always demonstrate the results of your work to a client.
For your needs you can crop images as you wish by using crop option in module settings. This is easy as ABC and give awesome results.
You can use original proportions for the result without distortion just by disabling crop option. Use portrait and landscape images how you like.
Unlimited usage of this module on the one page gives you limitless possibilities. You can even create grid gallery of „was“ and „became“ images!