# Perfect Exposure

> Photo & Video

Canonical page: [https://chrome-stats.com/d/id1388698298](https://chrome-stats.com/d/id1388698298)

## Overview

- **ID:** `id1388698298`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Haoyuan Xia
- **Category:** Photo & Video
- **Rating:** 3.30 / 5 (7 ratings)
- **Version:** 6.0
- **Last updated:** 2019-11-10
- **First published:** 2018-10-16
- **Size:** 17 MB
- **Data as of:** 2026-09-20
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/perfect-exposure/id1388698298)
- **Website:** [http://www.strdao.com/software/perfect-exposure/](http://www.strdao.com/software/perfect-exposure/)
- **Privacy policy:** [http://www.strdao.com/privacy/](http://www.strdao.com/privacy/)

## Description

• Exposure
Perfect Exposure helps you calculate the exposure time when you change the aperture, ISO, or ND filters.

• Time-lapse
Perfect Exposure helps you plan a time-lapse shot by calculating the shooting duration and the final video duration.

• Stars
Perfect Exposure tells you maximum exposure time to produce sharp stars without trails. It includes the widely-used 600 Rule and 500 Rule, as well as the more accurate NPF Rule.

• Star Trails
Perfect Exposure calculates the angular length of the star trails within a certain period. It also shows an illustration of the actual scene.*

• Depth of Field
Perfect Exposure calculates the depth of field under certain focal length and aperture, as well as the hyperfocal distance.

* The illustration does not reflect the actual position of stars in the sky.

## Rankings

- #451,287 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id1388698298)