What's New
• Added support for iOS 13
• Minor UI improvements
• Minor bug fixes
App 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.
iPhone Screenshots
(click to enlarge)
App Changes
- June 16, 2019 Initial release
- August 16, 2019 New version 4.0
- August 18, 2019 New version 5.0
- November 11, 2019 New version 6.0
Other Apps From Haoyuan Xia
