Luma Calc is made and published by yeongsu son. AppBrain is an independent app data site and isn't affiliated with yeongsu son. The app name, icon, screenshots and description belong to yeongsu son and are shown as published on the App Store.
AppBrain's verdict
- Last updated
- March 24, 2026
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Releases
Updates seen on the App Store- Version
- 1.1.1
- Launched
- February 2025
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Technology
Found in the app by AppBrain- Price
- Free
- App size
- 19.3 MB
- Content rating
- Everyone
Technologies used by Luma Calc
About the app and developer
About Luma Calc
Luma Calc is a photo & video app developed by yeongsu son.
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App Information
Luma Calc is freely available from the App Store. The app size is 19.32 MB. The latest version available is 1.1.1. The last update was on March 24, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since February 2025.
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Store listing
By yeongsu son, from the App Store
Description by yeongsu son Written by the developer, not by AppBrain. Click to read.
Change your aperture, ISO, ND filter, or EV compensation — LumaCalc instantly tells you the exact shutter speed needed to maintain a correct exposure. No more mental math on set.
◆ Perfect for
- Photographers who attach ND filters and need to recalculate shutter speed every time
- Long exposure shooters who want to know the exact duration before pressing the shutter
- Anyone who adjusts aperture or ISO and needs a quick exposure correction on the fly
- Studio, outdoor, and video shooters who need fast, reliable settings
◆ Features
[Exposure Triangle Calculator]
Enter your current camera settings (aperture · ISO · shutter speed), then set your new values. The correct shutter speed is calculated in real time — no confirm button needed, results update instantly as you scroll.
[ND Filter Calculator]
Supports 23 ND filter densities from ND0 (no filter) to ND512K (512,000× light reduction). Instantly see the required shutter speed for any filter you attach.
[EV Compensation]
Apply exposure compensation from -3.0 to +3.0 EV in 1/3-stop increments to fine-tune your results.
[Long Exposure Display]
Results beyond 30 seconds are automatically formatted so you always know exactly how long to hold the shutter open.
- 1/8000s – 30s : Standard shutter value (e.g. 1/250)
- 30s – 60s : Seconds (e.g. 45s)
- 1 min – 1 hour : MM:SS format (e.g. 02:30)
- Over 1 hour : HH:MM:SS format (e.g. 01:30:00)
[Wide Setting Range]
- Aperture: f/1.0 – f/32 (1/3-stop steps, 31 values)
- ISO: 50 – 80,000 (1/3-stop steps, 33 values)
- Shutter speed: 1/8000s – 30s (56 values)
◆ Designed for the Field
- Dark theme: easy on the eyes in low-light shooting environments
- Wheel picker: drum-roll style selector for fast, precise input
- Haptic feedback: feel every click as you scroll through values
- Out-of-range alerts: clear Too Fast / Too Slow warnings when results exceed camera limits
Stop doing exposure math in your head. Set up your shot faster and more accurately with LumaCalc.