Plz help! Is this an example of Fair Use? Why or Why not?

Darren uses Photoshop to create a new version of the Mona Lisa by Leonardo da Vinci (view slide presentation in class). He uses this image on his website where he sells other photos he's created.

like any other technology, art form or field, digital cameras have their own nomenclature. the alphabet soup of jargon can be as confusing and intimidating as trying to understand how all those dials, buttons, levers and menu options affect the pictures and videos that you capture. fear not, because we've defined the most important words, phrases, commands and options you'll need to know when shopping for and learning to operate your new dslr, mirrorless, smartphone or other camera.