Hi Ryan, thank you for the feedback. This (#11) can definitely be pulled off on a business card, and I'll submit some other entries to give you an idea how (I can't actually post a business card design though). There are a lot of different ways you could color it too. And I'll keep working with the concept to see what else I can come up with.
As for your name... Personally, if you don't have a business name that is different from your given name, I think using the full name is a good idea -- YOU are the brand. "RL" doesn't tell me anything. But "Ryan Levi" does. It's more personal than "RL" and photography itself is personal from both sides of the camera, regardless of what or who you're shooting. Also, "Ryan Levi" is a great name - 4 letters in the first and 4 in the last, nice syllables (sorry, I majored in English, so I'm a bit of a language geek).
All that said it's very common to see a logo that is a lettermark using the initials of someone's name or a company name. In part, I used your name because the "R" and "L" in my designs are fairly abstract, and I worried that I would have to repeat "RL" in front of photography to make the logo truly readable, and I wasn't sure how that would look. I will show you examples with "RL" instead of "Ryan Levi," but I definitely prefer your full name!