I recently saw a photo for sale in a local frame shop/gallery that I really like. It is an architectural-type of photo that was taken locally. My first thought was that I'd really like to try to do something similar for my own use. At most, I might frame it and hang it in my house. I'd never try to sell it. I know that legally I can take such a photo. But would I be crossing any kind of ethical boundary in doing so?