User manual DA-LITE WORSHIP FACILITY FRONT SCREEN PROJECTION

[. . . ] The Da-Lite Difference. Worship Facility Front Screen Projection Guide W O R S h i P FA C i L i T Y FRONT SELECTiON GuiDE SCREEN COMPANY This manual is designed to help users and specifiers of front projection screens select the appropriate screen fabric for their individual Presentation Media requirements. Da-Lite welcomes reproduction of this manual with credit to Da-Lite Screen Company, inc. , Warsaw, indiana. ©2008 DA-LiTE SCREEN COMPANY, iNC. TA b L E O F CO N T E N T S iNTRODuCTiON. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 GETTiNG ThE MOST FROM ThiS MANuAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 TYPiCAL WORShiP FACiLiTY PROjECTiON APPLiCATiONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 SCREEN SELECTiON CRiTERiA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 SELECTiON CRiTERiA ChECkLiST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 ViDEO PROjECTiON ­ LCD, DLP, D-iLA AND LCOS TYPES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 OVERhEAD PROjECTiON. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 FiLM/SLiDE PROjECTiON. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 SCREEN FAbRiC DESCRiPTiONS AND SPECiFiCATiONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 SCREEN bORDERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 GLOSSARY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 1 iNTRODuCTiON No two worship facilities have the same projection needs. Ambient light, stage lighting, sightlines, ceiling height and a host of other factors make each facility unique. [. . . ] Example: (8 foot candles at screen surface x 5) = 40 lumens per square foot (minimum) 40 lumens per square foot x 48 square feet (6x8 screen size) = 1920 ANSi lumen projector (minimum) Therefore, assuming a 1. 0 or no screen gain, we will need nearly 2, 000 lumens projected onto a 6x8 screen surface in order to overcome the ambient light. it is important to note that it is almost always more economical to control ambient light at the screen surface than it is to purchase a high output projector. CRITERIA #4 ROOM CONFIGURATION/SIZE if the room configuration forces audience members to view the projected image from an angle greater than 30 degrees, multiple screens will be required. Notice, too, that angling the screens in towards the stage will help people look across the platform (towards the leaders on the stage) to the screen on the opposite side. This will increase the eye contact that is necessary for the leaders on the platform to engage with the audience while simultaneously providing the needed projected image. A note of caution: Two side screens angled in as described above will require that the screen is at an angle high enough for the audience members to look slightly over the head of the leaders to see the image. by placing the screens too low, the leaders would actually block the sightlines to the screens! FIGURE 1 Figure 1 Figure 1 FIGURE Figure 2 Figure2 2 10 CRITERIA #5 PROJECTED IMAGE MAKE-UP Determine if the projected image is one or more of the following: a) NTSC/HDTV/Computer Video Signal ­ Generally speaking, a video signal is made up of moving images in which the visual task at hand is watching rather than reading. This is typically true of DVD video clips or live IMAG. computer generated song lyrics or message points) require higher resolution to project characters and detail with clarity. CRITERIA #6 PROJECTOR PLACEMENT Determine if the projector will be placed perpendicular to screen center. Whenever the projector and the audience are on opposite sides of the normal and requires higher gain, use a screen that is reflective. Whenever the projector and the audience are on the same side of the normal and requires higher gain, use a screen that is retro-reflective. (Figure 2). FIGURE 1 FIGURE 2 CRITERIA #7 CONTRAST ENHANCEMENT if a high ambient light level is present, a contrast enhancing screen surface is desired. This is the most common application for churches and should be considered instead of the standard "matte white" screens in high brightness rooms. in many worship facility applications, a contrast enhancing screen is desired to provide greater shadow detail in the projected image and help to combat ambient lighting conditions. 11 SCREEN SELECTiON CRiTERiA For ease in collecting the criteria for selecting the proper front projection screen fabric, use the following checklist to record your answers. Then, use the checklist as a guide in completing the decision matrix that follows. Application_____________________________________________ Date_______________________ Prepared by________________________________________________________________________ Complete this checklist for each presentation media application, then refer to pages 14-17 and complete the decision matrix that matches your projection method. Screen fabric descriptions are listed on pages 18-20. CRITERIA #1 PROJECTION METHOD Video­LCD, DLP, D-iLA, LCoS Film/Slide Technology Overhead Technology CRITERIA #2 AMBIENT LIGHT CONDITIONS Part A Ambient light iS controllable Part B uncontrollable light DOES NOT affect screen image uncontrollable light DOES affect screen image CRITERIA #3 DISPLAY BRIGHTNESS Your display brightness has 25 or more foot lamberts. Your display brightness has less than 25 foot lamberts. CRITERIA #4 ROOM CONFIGURATION/SIZE Audience members will be seated 30º OR MORE from the center of the screen Audience members will be seated LESS ThAN 30º from the center of the screen Ambient light iS NOT controllable 12 SCREEN SELECTiON CRiTERiA CRITERIA #5 PROJECTED IMAGE MAKE-UP NTSC/hDTV Video image Digital Text or Pixelized Data CRITERIA #6 PROJECTOR PLACEMENT Projector iS at or below screen center Projector iS NOT at or below screen center CRITERIA #7 CONTRAST ENHANCEMENT A contrast enhancing screen iS desired A contrast enhancing screen iS NOT desired 13 V i D E O P R O j E C T i O N ­ LC D, D L P, D - i L A A N D LCO S T Y P E S To select the proper Front Projection Screen fabric, simply answer either Yes or No to each question asked and follow the lines to subsequent questions. When questions are skipped, these have no relevance in this situation or are overridden by previous criteria. VIDEO PROJECTION ­ LCD, IS AMBIENT LIGHT CONTROLLABLE? YES DOES DIRECT LIGHT WASHOUT SCREEN? YES IS YOUR DISPLAY BRIGHTNESS 25 FOOT LAMBERTS OR MORE? [. . . ] if the screen surface is to be used exclusively for a projection method with a set aspect ratio (i. e. video format 1. 33), then purchase a screen surface with borders on all four sides. if the screen will be used for a differing range of projection methods with a variety of aspect rations (i. e. slides), then purchase a screen with borders only on the vertical sides and adjust the screen drop to reduce the unused portion of the screen surface. 21 G LO S S A R Y The special terms used in this manual and those common in discussing front projection screens are described below: Ambient Light ­ All light in a viewing room produced by sources other than the screen. [. . . ]