The Best Angles for a CineGrey 5D®

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Here is an informative discussion about the use of the Cinegrey 5D® material.  The angular reflective material may be forgiving on your projection angle but it is always best to check and make sure that you’re getting the best picture performance possible.


*The discussion below is based on actual chat transcripts with the omission of any personal/confidential material to protect the customer’s privacy. An example in this case is to change the contact’s identification name/number to “Customer” or a generic name.



  • [18:12]        Rick: Hello, how may I help you.
  • [18:14]  Customer: I am considering buying an Epson 1450 projector with one of your CineGrey 5D screens. I noticed a couple of times that the projector has to be located in a certain place and the viewing angle is very specific for everything to work correctly. Is this true?
  • [18:16]        Rick: yes, due to the ambient light reflective property you will need to offset the projector from the screen and angle the unit for the light to hit the viewer view height lever.
  • [18:16]        Rick: File :
  • [18:17]        Rick: Do you have full or some control of the lighting in the room?
  • [18:18] Customer: Some control. Just bought a new home that has a lot of windows, with blinds, but also a skylight.
  • [18:18] Customer: If someone is sitting and another person is standing, what do they see differently?
  • [18:20]        Rick: For having a high gain reflective property this material will give you 80 degree of viewing angle. If one is standing they still be within the view angle to see a clear picture once you move away too far to the left or right beyond 80 degrees, you will be so off axis that the picture will be dimmer than if you are directly in front of it.  However, standing or sitting will not be enough difference for one to have a better perceived image than the other.
  • [18:22] Customer: Okay. If the top of the screen is at 8 feet and the projector is on a table behind the couch, 4 ft tall, will that work?
  • [18:26]        Rick: This mostly depends on the projector.  I can send you a swatch to test on if you like but the generic answer is that  you will be fine. As you can see from the photo, the projector is aimed up. If your lens is straight to the screen you will experience hot spotting. Also if i may ask on the projector you’re planning to get, Do you know the Lumen output?
  • [18:27] Customer: Epson 1450…4200 Lumen
  • [18:30]        Rick: Okay, for lower lumens units (less than 3000) you can do a regular white screen with light control or the lower Cinegrey 3D the Cinegrey 5D would be best.  I typically recommend the Cinegrey materials anyway because of their superior ISF-certified picture performance.  Also, since this is a bright projector i will strongly recommend testing the projector on your wall. If you are able to view a clear bright picture without a lot of the image washing out, a standard white screen will work great if you do experience some image wash out i will recommend our CineGrey 3D screens.
  • [18:32] Customer: Which white electric projector screen would you recommend? The projector screen will come down in front of some windows.
  • [18:33]        Rick: What diagonal size are you looking into
  • [18:34] Customer: 120 or 135
  • [18:34]        Rick: I have one that will be best for your set up.
  • [18:36]        Rick: the model is STT120XWH2-E12 for white case or STT120UWH2-E12 for black case. For the 135 inch screen it will be STT135XWH2-E6 and STT135UWH2-E6, these models use the Cinewhite material that will provide the flattest surface.
  • Also, use blackout shades between the screen and the window.  UV radiation will eventually destroy any projection screen material if left unprotected.
  • [18:37] Customer: Awesome…thanks for your help today.
  • [18:40]        Rick: you’re welcome.
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