1) Determine Your Optimal Screen Size First!!

    a) The closet seat to the screen should be no closer than 1.5 times the screen width.

    b) The furthest seat to the screen should be no closer then 6 times the screen width.

    c) Optimal Seating Distance should be 4 times the screen width.

Use the Calculator provided to determine your Screen Size based on Seating Position.

Enter a Seating Distance and a Distance factor (1.5 thru 6)

2) Determine How Bright of a Projector You will Need Second!!

    This perhaps is the most complex part of the process.

    You must know your environment.

    A brighter room will require a brighter projector or higher gain screen.

    a) Ambient - The average TV has a brightness app = 116 Foot-lamberts

            Foot-lamberts = Lumens  / sq.ft

            We will use 116 Foot-lamberts as our guide for a room with ambient lighting.

    b) Dark Room with Controlled Lighting we will use a minimum value of 17 Foot-lamberts

            12-22 foot-lamberts is the standard range used by most industry professionals.

    c) Light Leakage - Moderately controlled room lightly We will use 30 foot-lamberts.

The calculation is based on the recommend Foot-lamberts and the area the (16:9) projection Screen (sq ft).

For these Calculations we must also know a Screen Gain. Use use 1 as a Default

Enter a screen Width or Diagonal dimension in inches or Enter all of "Your Values" into the provided cells

Now that you have calculated calculated your Optimal Screen Dimensions

and Projector Lumens you are ready to select your projector and screen.

Select your Projector Third!!!

The last thing you will need to know to select you projector is the image size at a specified distance.

Use the Distance you found using the Screen Dimension calculator above.

Go to the Projection Screen Image Size Calculator based on the projectors we offer.

Select Your Projector Screen Last!!!!

Need to know More about Projector Screens.

Projector Calculations and Formulas