價格：免費
檔案大小：42.5 MB
版本需求：系統需求：iOS 10.0 或以後版本。相容裝置：iPhone、iPad、iPod touch。
支援語言：英語
A great tool for calculating the right projection lens or the right distance for your next video projection event.
Features:
- Calculate the right lens factor by the desired size and distance or vice versa.
- Choose either 4:3 or 16:9 aspect ratio.
- Calculate either using metric or imperial units or just use it to convert between the two .
Pro Features:
- Save unlimited events and go back to them anytime.
- Adds free.
支援平台：iPhone, iPad