THIS IS NOT A PHOTOGRAPH.
It is a drawing, by a Portugal-based lawyer, Samuel Silva, who, due to the massive internet interest in this piece of art, yesterday took to DeviantART, to answer some FAQs.
Q:How many colors do you have and what pens are these?
A: I have 8 colored Bic ballpoint pens, for this I used 6 of them plus black. They are just common everyday ballpoint pens.
Q: Where do you get them? I have never seen them.
A: Staples, Ebay, Amazon, and pretty much any good office supply store, just because you haven’t noticed them before doesn’t mean they don’t exist.
Q: Do you use any other medium mixed with the ballpoint pens?
A: No, I just use ballpoint pens for these drawings. Everything is 100% ballpoint pen.
Q: How do you mix the colors? How do you blend them?
A: I don’t mix them nor blend them. Ballpoint pen ink dries instantly and can not be erased. I just cross hatch the different colors in layers to create the illusion of blending and the illusion of colors I don’t actually have.
Q: Are you a professional Artist?
A: No, I’m just a lawyer, art is just a hobby for me, although it takes from 5 to 50 hours to finish each drawing. I started drawing when I was 2.
You can see some more of his work, here.