You can call yourself a photographer when you actively engage in photography and consistently produce photographs that meet certain standards. These standards can vary depending on the individual's personal preference or the industry's expectation, but they usually involve the composition, technical proficiency, creativity, and overall visual appeal of the images. Being recognized as a photographer by peers or clients can also validate one's self-proclaimed title. However, ultimately, the decision to call oneself a photographer should stem from a genuine passion for the craft and a commitment to constantly improve one's skills and artistic vision.