Reciprocity Timer vs Light Meter

Manage your film photography from start to finish!  Reciprocity Timer has 2 Version - the "Standard" Version does NOT include advanced features but can be used to calculate reciprocity on a range of common films. The "Pro" Version is available for an additional $9.99 USD (via in-app-purchase) unlocks a range of advanced features. The initial purchase price allows you to calculate reciprocity for all the films included by selecting an observed exposure time. This $1.99 US non-pro version is suitable for people who just need to calculate an exposure that includes reciprocity adjustments for commonly used films. It will suit many users who don't require or need to upgrade to the pro version for features like note keeping or a camera database etc. It's most suitable if you are new to film. More advanced film users and photographers may want to pay to upgrade after their initial purchase to the pro version. If you use a pro-feature you'll be prompted to upgrade for an additional $9.99 US. This will unlock all the additional features including the Zone Editor, Note, Camera and Film Holder database as well as custom films and filters. There is no need to upgrade if you just want to calculate and time reciprocity for a particular film and you always use the same camera. The app includes in-app purchase to unlock pro features including a note-keeping feature, the ability to add custom films and the ability to select often used film stock as favorites. Once you upgrade then the one app does it all - notes, filters, exposure calculations, custom films, zone system editor, film holder management as well as the reciprocity math! A comprehensive film reciprocity calculator for photographers. Select a film type and metered exposure time - the calculator will provide a reciprocity compensated exposure time. The app includes an exposure timer so you can time your long exposures. You can also use a slider to adjust exposure when you have filters attached. The app supports a wide range of film stocks and allows the user to add various common exposure filters such as NDs and Polarizers. Keep detailed notes and share them. Share your adjusted exposure times with colleagues. This app makes film photography a breeze. You may need to setup Reciprocity Timer in Settings -> Notification Center to ensure the app's timer can notify you when exposures are ending and your device is asleep. Watch companion app now included. To install the app use the Apple Watch App on your phone. Ensure your watch and phone are paired an unlocked and scroll down the list of available apps to Reciprocity Timer. Select Install. You can also turn on "Automatically Install Apps".

FilmBox Toolkit Shoot film with greater confidence. From exposure decisions and manual focusing to long-exposure compensation and photo notes, FilmBox Toolkit brings essential film photography tools together on your iPhone. Make informed choices before you press the shutter. ZONE SYSTEM METERING Visualize readings from different areas of your scene using Zone System principles. Compare highlights and shadows, decide which details to preserve, and adjust your exposure. Built for situations where careful exposure control matters. FREE TOOLS • Light Meter (basic mode): Evaluate ambient light and get exposure settings to work from. • LiDAR Rangefinder (up to 1 meter): Estimate subject distance to assist manual focusing and flash calculations. Requires compatible hardware. • Flash Calculator (GN): Calculate settings from the guide number for shooting without TTL. • Depth of Field Calculator: Estimate your focus range and hyperfocal distance. • Reciprocity Failure Compensation: Calculate long-exposure adjustments based on your selected film. • Shutter Speed Test: Help check your camera's shutter speed and assess its performance. • Negative Viewer: Use the camera to preview negatives as positive images and inspect their contents. For previewing only; not a replacement for professional scanning or post-processing. • Gear Library & Photo Log: Organize film stocks, flashes, and preferred settings, and keep shooting notes for later reference. FREE & PRO FilmBox Toolkit is free to download. All features are free except the three Pro features below. Free features include manual input for Zone System metering, basic light metering, rangefinding up to 1 meter, the Shutter Speed Test, and the Negative Viewer. FilmBox Pro unlocks: • Zone System metering: real-time light readings. • Light Meter: 1-degree spot metering mode. • Rangefinder: distance measurements beyond 1 meter. Choose either: • A one-time lifetime purchase. • An annual subscription with access during the subscription period. See the in-app purchase screen for current pricing and purchase terms. DEVICE COMPATIBILITY • Standard SDR metering: Compatible iPhones running iOS 17 or later. • Apple Log metering: Uses 10-bit Apple Log data. Supported on iPhone 15 Pro/Pro Max, 16 Pro/Pro Max, and 17 Pro/Pro Max. The app selects the appropriate mode for your device. • LiDAR rangefinding: Requires a LiDAR-equipped iPhone: Pro and Pro Max models in the iPhone 12, 13, 14, 15, 16, and 17 families. Devices without Apple Log or LiDAR can still use other compatible features. Hardware support and Pro access are separate requirements. PRIVACY Metering, depth of field, and other calculations run locally on your device. We do not collect or upload your personal data. Privacy Policy: https://www.filmboxtoolkit.com/privacy.html TERMS OF USE This app is licensed under Apple's standard End User License Agreement (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/