Perfect Exposure 4+

Name: Perfect Exposure
Rating: 3.3 (7 reviews)
Author: Haoyuan Xia

Haoyuan Xia

Designed for iPad

- 3.3 • 7 Ratings

- Free

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.

Nov 10, 2019

Version 6.0

• Added support for iOS 13
• Minor UI improvements
• Minor bug fixes

3.3 out of 5

7 Ratings

Awesome exposure calculator

Super useful for studio photography and or using ND filters. The exposure calculator is an awesome tool that lets you compare one set of exposure settings to another. I wanted to use it for my studio lighting setup where I knew what settings provided a properly exposed shot and I wanted to get an ND filter in order to shoot a wider aperture. This app allowed me to figure out what ND filter was necessary.

Only improvement is I wish the range of selectable ISO went down to 50 instead of 100 being the lowest. Not worth subtracting a star for this excellent free app.

Clean and great!

I am so proud of my time-lapse photography after I use this app.

The developer, Haoyuan Xia, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.