DBW FilmCalc

DBW FilmCalc is a simple exposure companion for black and white film photographers. Enter what you know and get the exposure you need, then time it from your iPhone. • Bellows: compensation in stops and exposure factor for your lens and bellows extension • Reciprocity: manufacturer-published correction for your film • Exposure: film, metered time and optional bellows, corrected in the right order, with a big result and a START TIMER button • Timer: large full-screen timer that keeps accurate time and stays awake while running, with a soft chime and haptic at the end • Light, dark and red night modes, big touch targets, VoiceOver and Dynamic Type Supported films, each with its data source shown in the app: • Ilford HP5 Plus, FP4 Plus, Delta 100 Professional, Delta 400 Professional, Pan F Plus • Kodak Tri-X 400, T-Max 100, T-Max 400 • Kentmere Pan 100, Pan 400 • Fomapan 100 Classic, 200 Creative, 400 Action No account, no ads, no tracking, no internet needed. The app collects no personal data. Made by Digital Black & White. Results follow manufacturers' published data but depend on your film, developer and conditions, so make test exposures for critical work. Film names are trademarks of their respective owners. Not affiliated with or endorsed by them.