Version 4.0: Added Anamorphic (horizontal expansion) front projector lens option, which adjusts projector brightness and throw ratios when selected.
Screen size vs aspect ratio calculator how to#
Version 4.1: Added details on how to enter 4k and 8k UHD resolutions. Please report any problems or suggestions via e-mail or the comments form below. seat locations, a second row stadium seating platform height calculation, and a few other goodies. projector screen size & projector mounting location (based on min/max projector throw distances). projector screen size & screen brightness with guidelines for recommended values (based on projector brightness and screen gain). recommended viewing distances for a given display resolution – 480p, 720p, 1080p/1080i, 1440p, etc (based on Visual Acuity standards). recommended viewing distances for a given screen size – for both flat panels and projectors (based on THX and SMPTE standards). The spreadsheet contains calculations for the following: Please download it and put it to good use! 
I noticed on various forums that others could probably benefit from this spreadsheet, so I cleaned it up and I’m now making it available to the public. Over the past several years, I’ve slowly constructed a spreadsheet to meet all of my home theater design needs.
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