【實用工具app】Lens Calculator Lite|最夯免費app-綠色工廠好玩App

Lens Calculator Lite is a tool for A/V professionals by A/V professionals. Quickly estimate what lens to use in projectors. Just use the sliders to set the screens width and the projectors distance.Get Pro version:-Quickly estimate wich lens to use in projectors. -The distance where to place the projector.-Calculate how big screen you could use with a given lens.-4:3 projection with 16:9 projector switch.http://itunes.apple.com/se/app/lens-calculator-pro/id348792034?mt=8