The essential companion for film photographers. FilmCalc Pro puts three precision tools in your pocket — built by film shooters, for film shooters. Whether you are metering a scene in golden-hour light, compensating for reciprocity failure on a long night exposure, or figuring out hyperfocal distance on a manual-focus lens, this app has you covered. EV CALCULATOR Quickly determine the Exposure Value for any combination of aperture, shutter speed, and ISO. See at a glance how changes to one variable affect the overall exposure. Perfect for metering with handheld meters or when using older cameras without built-in TTL metering. RECIPROCITY FAILURE COMPENSATION Long exposures on film do not always behave the way the math says they should. Every film stock has its own reciprocity characteristics, and ignoring them can lead to severely underexposed negatives. FilmCalc Pro includes a built-in database of 20+ popular film stocks — including Ilford HP5 Plus, Kodak Tri-X 400, Fuji Neopan, and many more — each with manufacturer-published reciprocity correction data. Enter your metered exposure time, and the app instantly calculates the corrected time you should actually use. DEPTH OF FIELD CALCULATOR Calculate near and far limits of acceptable sharpness, total depth of field, and hyperfocal distance for any lens and sensor combination. Supports full-frame (35mm), APS-C, Micro 4/3, and medium format. Enter your focal length, aperture, and focus distance, and get instant results. BUILT FOR THE DARKROOM FilmCalc Pro features a dark theme designed specifically for low-light environments. No blinding white screens when you are working in the darkroom or shooting at night. The entire app works fully offline — no internet connection required, ever. Your tools work anywhere, anytime. KEY HIGHLIGHTS - EV Calculator with full aperture, shutter speed, and ISO range - Reciprocity failure data for 20+ film stocks - Depth of field and hyperfocal distance calculator - Support for multiple sensor formats - Fully offline — works without internet - Dark theme optimized for darkroom and night use - Clean, focused interface with no unnecessary clutter Built with love for the analog photography community. No subscriptions, no ads, no in-app purchases — just a one-time purchase for a tool that respects your craft.