This app is a simple calculator for determining beam and field spread information for common theatrical lighting fixtures. It comes preloaded with data for 50 units plus has the ability to calculate generic spreads for fixtures not included.
To use, select the fixture from the drop down menu and input either the Trim Height and Floor Distance or the total Throw Distance. The calculator then determines the Beam and Field spreads and the estimated Footcandles at that distance for the fixture. As a bonus it will also tell you the color frame size for the unit.
In addition, if you need more information about the unit the app links to the manufacturer's data sheets.
This app will be fully supported so if you need additional units not on the list, feel free to use the provided method on the app to request new fixtures or features that are not on the initial release.
To our European users: Most measurements are based upon multipliers, so if you input meters instead of feet, the app will output meters. The only unit that will not be correct when you input meters is the footcandle measurement.
This app is free thanks to a sponsorship by Altman Rentals, a New York area rental company that provides lighting rentals in the greater New York area. Most of the fixtures provided in the app can be rented from Altman Rentals including the Source Fours and Altman Units.