Viewfinder Preview

Viewfinder Preview is an iPhone app that lets you preview camera framing for any combination of camera and lens. Pick your target film or sensor size and focal length, then point the iPhone at your subject to verify framing before you grab the big camera. If the framing looks right, you can proceed with the real setup; if not, you can adjust quickly. The app includes a comprehensive database of camera sensor details and film formats, and you can add your own custom formats if needed. It's designed for stills photographers and filmmakers working in film or digital, and it's also handy for photo sketching, location scouting, or storyboarding when you don't have your main rig.

Key features include fully customizable menus to track your preferred formats and focal lengths, a configurable light meter, and the ability to take photos within the app to document framing and settings. Each shot records metadata such as film format, focal length, and lighting meter data, and you can add notes and view them later in a photo gallery. You can share images by email or messaging, create project albums, export PDFs of albums, and explore film stock emulation and wide-angle lens adapter support for greater framing flexibility.