---
title: "LExp - Long Exposure Calcs — App Overview"
url: https://marlvel.ai/apps/org-genkin-longexposurecalcs
category: Photo & Video
developer: Ilya Genkin Photography
platforms: ios
rating: 4.7 (17 ratings)
pricing: paid
report_level: overview
generated: 2026-05-04
last_verified: "2026-05-04T09:11:56.889Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** This app serves as a comprehensive technical reference and calculation suite for photographers managing complex lighting and filter requirements in the field.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Photo & Video |
| Rating | 4.7 ★ (17) |
| Pricing | paid |
| Platforms | iOS |
| Latest Version (iOS) | 3.11 |
| Developer | Ilya Genkin Photography |

<!-- SECTION: Summary -->
## What is LExp - Long Exposure Calcs?

LExp is a specialized utility for landscape photographers that provides essential tools for long exposure, night, and ND filter photography. It consolidates complex exposure calculations, sun and moon tracking, and filter stacking logic into a single mobile interface.

<!-- SECTION: Key Features -->
## Key Features

- **Exposure Calculators**: Automates complex calculations for stacking multiple ND filters and determining correct settings for Graduated ND filters.
- **Solar and Lunar Tracking**: Provides data on sunrises, sunsets, twilight phases, sun direction, and moon phases for any location.
- **Nightscape Tools**: Assists photographers in calculating accurate exposure settings for landscape photography under moonlight.
- **Shadow and Elevation Data**: Calculates sun elevation, azimuth, and shadow ratios to help plan shots based on light positioning.

<!-- SECTION: Target Audience -->
## Who is it for?

Landscape and night photographers who utilize ND filters and require precise environmental lighting data.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/lexp-long-exposure-calcs/id547000247?uo=2)
- [Full Intelligence Report](https://marlvel.ai/apps/org-genkin-longexposurecalcs)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/org-genkin-longexposurecalcs).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*