Depending on your point of view, there are many examples of magic used in the creative process of art. This answer considers the definition of art to be
[MASS NOUN] The expression or application of human creative skill and imagination, typically in a visual form such as painting or sculpture, producing works to be appreciated primarily for their beauty or emotional power.
Source: Oxford American Dictionary
Photography, in my opinion, is definitely a form of art. Many people today use photographs as a simple visual chronicle, but there are still many photographers invested in their craft for primarily artistic reasons.
The animated photographs of the wizarding world are an enhancement over 'muggle' photography and it could be argued provide for greater artistic expression than still photographs. However, I will attempt to frame the rest of this answer without that argument, as it would mirror an argument on whether cinema or still-photography is more artistic.
Instead, I will attempt to prove that the magic itself of the wizarding photographs allows for artistic expression in that part of the process.
The first part of this is fairly straightforward. We can see that the animation of the photo comes from the development process by the fact that Colin Creevy uses a 35mm muggle camera to obtain moving photographs. Also, Colin clearly states that the animation depends on using developing potion to occur.
"and a boy in my dormitory said if I develop the film in the right potion, the pictures'll move."
Harry Potter and the Chamber of Secrets page 96
Secondly, even a cursory glimpse of the history of 'muggle' photographic film will show that the development process is equally important to the production of a quality, artistic photograph as the other elements of photography (e.g. lighting, composition, film stock, exposure, focus etc. etc. See also Photo.SE). This has been somewhat diminished by the rise of point-and-shoot cameras, commercial film development and the other aspects of home/consumer photography, and further diminished by the rise of digital photography.
However, the existence of the developing potion proves that wizarding photographs still use the analog, solution-based development process. Also, the many scenes and discussions of Harry, Ron, Hermione, Snape (and others) in potions class has clearly taught that the creation of potions is an exacting process, where the potency and nature of the potion produced depends highly upon the skill and decisions of the potion maker. Snape's numerous annotations in his potions book from Half-Blood Prince further show that the potion making is at the least a science with great room for improvements by gifted individuals, if not an outright art form.
That means that taking and developing moving photographs is a highly artistic process that closely depends on the application of magic. Photographs are a form of visual expression very capable of capturing or expressing beauty. And potion making, I would venture, is an application of skill whose results are unmatched in their emotional power: consider the love potion. Even if there is a commercially available supply of developing potion, there is no evidence to suggest that even a novice photographer could not find as much chance for artistic application in the use of magic as in the rest of the aspects of photography.
To sum up:
- Photography is an art.
- Potion making is an art.
- Potion making is used in the making of moving photographs.
- Potion making is magic.
- Q.E.D. magic is used in the art of moving photographs.