Q) What does the proportion mean?
A) This is the width of the screen divided by the height. The ratio of 16: 9 is the same as 1.78: 1, and the ratio of 4: 3 is the same as 1.33: 1.
Q) What percentage of projectors should I choose?
A) Select a proportion that corresponds to your projector application: For NTSC Video select 4: 3 and for HTDV select 16: 9.
Q) What is the 1: 1 screenshot?
A) This is a square image
Q) What does "Gain" mean?
A) The term Gain is used to measure the reflective quality of the display. Choose a projector with a higher increase if the brightness of the projector lamp is not enough for your room.
Q) What size of projector should I buy?
A) Sorry, this is not a question – The size of the screen should be selected depending on the resolution and brightness of the projector, the ambient light of the room, the size of the room, the number of seats and their arrangement, as well as the distance  Q) Do I need a white or gray screen?
A) Depending on specific circumstances, but if you have a relatively new projector and a darker home there is a white screen probably the better choice. In the case of high environmental light directly on the screen, you may choose a gray screen.
Q) Will roll up monitors develop waves over time?
Non-flipscreen displays are
Q) Which desktop should I choose?
A) Depending on a number of different factors, such as ambient light, prediction, arrangement, brightness projector and the status of projectors among others. Many manufacturers screens have online calculators that help you choose the best desktop desktop due to particular circumstances.
Q) How do I clean my projector?
A) See manufacturer's manual as this depends mostly on the surface material. In most cases, a dry cloth will remove the dust, but if you need to blow it, check the manufacturer's recommendation for any kind of detergent that you can use.
Source by Peter Kerl