# LightScope

> LightScope (iPhone/iPad app by Byungil Park.)

- Source: https://appshunter.io/ios/app/lightscope/id6745493531 (this page in markdown: same URL + `.md`)
- Developer: [Byungil Park](https://appshunter.io/developer/318781673)
- Category: Graphics & Design
- Price: $3.99
- Age rating: 4+
- Requires: iOS 16.6 · 2 MB
- Languages: English, Japanese, Korean
- Released: 2025-05-07
- Data updated: 2026-05-16
- User reviews in markdown: https://appshunter.io/ios/app/lightscope/id6745493531/reviews.md

## What is LightScope?

LightScope is a comprehensive solution providing professional light measurement and analysis using your device's camera sensor.

【Key Measurement Features】
• Illuminance (lux) Measurement: Calculates accurate illuminance by analyzing EXIF data from the camera sensor. Illuminance is derived using the formula: (F-number² / (Exposure Time × ISO)) × Calibration Factor.
• Luminous Intensity (candela) Calculation: Automatically calculates the luminous intensity of a light source based on the set distance. Uses the formula: Illuminance (lux) × Distance².
• Color Temperature (K) Analysis: Precisely measures color temperature in the range of 1500K~15000K by converting RGB values to XYZ color space using McCamy's formula.
• Real-time Histogram: Visualizes the balance of shadows, midtones, and highlights through 16-level brightness distribution analysis.
• Contrast Ratio Measurement: Evaluates the ratio between the brightest and darkest parts of a scene according to WCAG accessibility standards.
• Noise Measurement (SNR): Calculates the signal-to-noise ratio in dB to evaluate image quality in the shooting environment.

【Advanced Features】
• Image Capture and Storage: Captures camera images at the time of measurement and stores them with measurement data.
• Full-screen Image View: Zoom, pan, and rotate captured images for detailed inspection.
• Gallery Saving: Save captured images to your device's photo library.
• Measurement History and Trends: Save all measurements chronologically and visualize trends with graphs.
• Camera Full-screen Mode: Hide panels to focus on the camera view while checking key measurements via a mini info panel.
• Perfect Dark/Light Mode Support: All UI elements automatically adapt to the system theme.

【User Settings】
• Illuminance Calibration: Adjust the calibration factor for more accurate measurements based on your environment.
• Distance Setting: Set the distance to the light source for precise luminous intensity (cd) calculations.
• Front/Rear Camera Selection: Choose the appropriate camera for your measurement situation.

【Technical Features】
• Support for measuring various light source types: natural light, LED, fluorescent, incandescent, etc.
• Algorithm optimization for stable color temperature calculation even in low-light environments
• 10-frame moving average filter for measurement stabilization
• Center-weighted image analysis for accurate evaluation of main subject quality
• Automatic exposure quality assessment based on histogram analysis

Perfect tool for photographers, videographers, lighting designers, UI/UX developers, and anyone who needs accurate light measurements.


## Version history (last 1 release)

### 1.0 — 2025-05-07

No release notes.

## More apps by Byungil Park

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- [Contacts Export to Sheet](https://appshunter.io/ios/app/contacts-export-to-sheet/id1532000113)
- [내연봉계산기 - 실수령액, 연봉순위](https://appshunter.io/ios/app/id1564866857)
- [Light Scope - Lux Meter](https://appshunter.io/ios/app/light-scope-lux-meter/id1572227924)
- [Banzle - Video Player for Pets](https://appshunter.io/ios/app/banzle-video-player-for-pets/id1610958994)
- [BikeCam Pro](https://appshunter.io/ios/app/bikecam-pro/id6473234309)

All apps by Byungil Park: https://appshunter.io/developer/318781673

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-16.*