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post #1 of 4 Old 01-23-2020, 08:41 AM - Thread Starter
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Screen and lumens calculaton

145 inch screen.
One with .7 Gane
One with 1.0 Gane

Projector 2000 lumens Eco
3000 in hi mode

What kind of lumens would I have
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post #2 of 4 Old 01-23-2020, 09:04 AM
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Quote:
Originally Posted by Schurter View Post
145 inch screen.
One with .7 Gane
One with 1.0 Gane

Projector 2000 lumens Eco
3000 in hi mode

What kind of lumens would I have
Luminance in fL= (Illuminance in Lumens / Screen Area in Square Feet) * Screen Gain

Assuming a 16:9 aspect screen

22.5fL = (2000/62) * .7
33.8fL = (3000/62) * .7


32.2fL = (2000/62) * 1.0
48.3fL = (3000/62) * 1.0
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post #3 of 4 Old 01-23-2020, 09:39 AM - Thread Starter
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Quote:
Originally Posted by b curry View Post
Quote:
Originally Posted by Schurter View Post
145 inch screen.
One with .7 Gane
One with 1.0 Gane

Projector 2000 lumens Eco
3000 in hi mode

What kind of lumens would I have
Luminance in fL= (Illuminance in Lumens / Screen Area in Square Feet) * Screen Gain

Assuming a 16:9 aspect screen

22.5fL = (2000/62) * .7
33.8fL = (3000/62) * .7


32.2fL = (2000/62) * 1.0
48.3fL = (3000/62) * 1.0
Thank you.
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post #4 of 4 Old 01-23-2020, 08:00 PM
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Quote:
Originally Posted by Schurter View Post
145 inch screen.
One with .7 Gane
One with 1.0 Gane

Projector 2000 lumens Eco
3000 in hi mode

What kind of lumens would I have
What projector?

Distance from screen to lens?

Manufacturer claims are sometimes not accurate.

What type of screen fabrics?
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