Projectionst is a lens calculator for the professional A/V Technician. It also contains a detailed product specification database of most common professional high end projectors from Barco, Christie digital, Projection Design, Panasonic & Sanyo are included. The app can be used to calculate projector lens & distance at a given screen size, or calculate screen size from a given distance & lens for a particular projector. In addition basic edge blend calculations can be made. For a complete list of supported projectors please visit: http://www.neodarque.com/Projectionist/Projectors