ProSoundWeb Community
Church and H.O.W. – Forums for HOW Sound and AV - Your Displayed Name Must Be Your Real Full Name To Post In The Church and HOW Forums => H.O.W. AV Archive => Topic started by: Kellen Tyburski on October 07, 2009, 04:49:15 PM
-
Hey guys...
I usually frequent the REP forums, but I had a question that I think would be best answered over in these parts... I am an AV technician at a hotel, and I have always been a little cloudy on my projection chops - I often just throw up projectors and wing it... Wondering if you guys could help me clear up a few things, or point me in the right direction.
(Lens size) * (screen width) = projector distance away from screen
So if its a .8 lens * 10ft = 8ft away (ideal distance)?
Is this true?
Also... Here is a question I have been wondering.
How is my 9x12 Fast fold screen's dimensions directly related to a certain aspect ratio? Is a 9x12 screen "tailored" for a certain aspect ratio?
Can you guys recommend any good AV books that cover this stuff? I am graduating with a degree in Audio Engineering, and unfortunately we have not covered any of this in school. I want to be just as knowledgeable with projection as I am with Audio signal flow.
-
The posting rules clearly displayed at the top of the page require that your real name be displayed. Unlike R/E/P aliases are not allowed in these forums.
Please go to your profile and change the "alias" field to your real name.
Mac
LAB moderator
-
Ok, I did the deed. Sorry I missed that!
Can anybody shine some light on this for me?
-
you are correct on the lens throw distance.
Your 9' by 12' screen is a 4:3 screen and if you fill it by the width with a 16:9 image the image will be 6' 9" by 12' (aprox).
Best place to learn about projection is on the Da-Lite education site. Tons of great info. http://www.da-lite.com/education/