Long Exposure Buddy
Shoot Long. Shoot Sharp.
Free · Designed for iPad. Not verified for macOS.
The long exposure calculator serious photographers actually use — ND filters, film reciprocity, golden hour, and a built-in timer. All in one app.
Long Exposure Calculator is the essential companion for photographers who shoot silky waterfalls, creamy oceans, light trails, star trails, and everything in between.
Calculate in seconds.
Set your base shutter speed, choose your ND filter stops, and instantly see the corrected long exposure time. Exposure triangle mode lets you factor in aperture and ISO for
complete creative control.
8 scene presets, ready to shoot.
Whether it's a misty ocean at golden hour or spinning steel wool at midnight — tap a preset to load proven settings with expert tips for that specific scenario.
Built-in countdown timer.
When your calculation is ready, tap Start. A full-screen timer counts down your exposure with Dynamic Island Live Activity support so you can track progress without unlocking
your phone.
Film reciprocity failure correction.
Shooting on film? Choose from 21 classic film stocks — Kodak Portra, Fujifilm Velvia, Ilford HP5, Tri-X, and more — and the app automatically calculates the extra exposure time
needed to compensate for reciprocity failure.
Golden hour, always on.
A location-aware banner on the main screen shows your next golden hour or blue hour countdown, updated in real time. A home screen widget keeps the timing front and center when you're planning a shoot.
Shot Log.
Every calculated exposure is saved automatically. Search, browse, and export your shots as CSV for post-processing notes or location planning.
Filter Collection.
Catalog your physical ND filters so the right stops are always one tap away.
Learn while you shoot.
The built-in Education Mode covers ND filters, the exposure triangle, reciprocity failure, and scene-by-scene technique guides — no internet required.
Siri Shortcuts.
Ask Siri to open a long exposure calculation and jump straight into the app.
Designed for: Landscape photographers, architecture and cityscape shooters, astrophotographers, film photographers, and anyone learning long exposure technique.
Ratings & Reviews
- This app’s overall rating was recently reset.
Film Reciprocity Failure Correction
Shooting on film just got a lot easier. Select from 21 popular film stocks (Kodak, Fujifilm, Ilford) and the calculator automatically adjusts your exposure time to compensate for
reciprocity failure — no lookup charts needed.
Siri Shortcuts
Long Exposure Calculator now appears in the Shortcuts app. Ask Siri to open a calculation or add it to your own automation flows.
Dynamic Island Live Activity
The exposure timer now surfaces on the Dynamic Island, so you can track your countdown from the lock screen without opening the app.
Golden Hour Widget
A new home screen widget shows your next golden hour or blue hour countdown at a glance — perfect for planning shoots the night before.
New App Icon
A fresh amber aperture design that looks sharp on any home screen.
Bug fixes and readability improvements
Text contrast is improved throughout the app, and a crash on launch affecting some devices has been resolved.
The developer, mitesh soni, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- mitesh soni
- Size
- 1.4 MB
- Category
- Photo & Video
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © Mitesh Soni