價格：免費
檔案大小：16.4 MB
版本需求：需要 iOS 8.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
Aperture Area Calculator are physic/math calculator to compute the aperture area of a lens fast and easy.
Features:
- Instant calculation
- Result are copy able to other app
- Formula are include as reference
- Support up to 16 decimal place
- Support various unit for each input
Aperture is a hole or an opening through which light travels. The aperture of an optical system is the opening that determines the cone angle of a bundle of rays that come to a focus in the image plane.
The f-number (sometimes called focal ratio, f-ratio, f-stop, or relative aperture) of an optical system is the ratio of the lens’s focal length to the diameter of the entrance pupil.
The focal length of an optical system is a measure of how strongly the system converges or diverges light.
The amount of light captured by a lens is proportional to the area of the aperture.
Aperture Area Equation
n = f / D
A = π (D / 2)²
A = π (f / (2 * n))²
where:
D - aperture diameter
f - focal length
n - f-number
A - aperture area
*This is a universal app that work for both iPhone and iPad.
Thanks for your support and do visit nitrio.com for more apps for your iOS devices.
支援平台：iPhone, iPad