Working for many years as a designer and art director, I have experience creating a wide variety of collateral:
identity campaigns, branding, email templates, books, newsletters, complex packaging, posters, direct mail, brochures, t-shirts, and large-format graphics such as banners and vehicle wraps. . . amongst other things.
I have used Photoshop for years, on everything from nearly invisible photo touch-up and color correction to creating complex and magical photo illustrations.
Elsewhere on this site are examples of photos used in illustration and design, but here are some of my recent and personal favorites.
Even though I started as a traditional pen & ink illustrator, I now use the computer to either finish my work or as the primary drawing tool.
So after some quick sketches, I can finish the piece and have it "print-ready" faster than any deadline.