SLR Photo Viewer is an iPhone app developed by Osawa Shunsuke. It serves as a convenient viewer for photos taken with a single-lens reflex camera. With this app, users can easily view their SLR photos on their iPhones.

One of the key features of SLR Photo Viewer is the display of shooting information on the thumbnail or list. Users can see important details such as the F value and shutter speed associated with each photo. What sets this app apart is the ability to customize the shooting information that is displayed. Users have the freedom to choose which details they want to see, including F value, shutter speed, exposure compensation, ISO, focal length, resolution, file size, times of day, lens, and filename.

SLR Photo Viewer offers a simple and intuitive interface, making it easy for users to navigate through their photo library. Whether you're a professional photographer or an enthusiast, this app provides a convenient way to view and organize your SLR photos on your iPhone.