1、SMPTE EG*3 74 I 8357403 0001533 85T CM PTE ENG IN EERI NG GUI DELI N E Projection for Techn cal Conferences EG 3-1994 Revision of EG 3-1989 1 Scope This guideline specifies the minimum condition and parameters for effective presentation of papers at technical conferences. 2 Auditorium 2.1 The ambien
2、t light shall meet the require- ments specified in 3.1. 2.2 The room shall be of sufficient dimension to permit an image size large enough to meet the requirements specified in-clause 5. O - 2.3 There shall be no obstruction to projection or viewing of the projected image as viewed from the normal s
3、eating area. Page 1 of 3 pages 3.3 House lights House lights shall be controllable by the projec- tionists. 4 Projected image 4.1 Luminance level The luminance at the center of the screen shall be 55 cd/m2 2 7 cd/m2 (16 fL f 2 fL) for all motion-picture formats. 4.1.1 The luminance of the projector
4、shall not be increased to overcome ambient light to the point of objectionable flicker. 4.2 Luminance distribution The image shall be free of hot spots. Illumination at the edges shall be within 75% of that specified in 4.1. 3 Projection 4.3 Slides 3.1 Ambient light The ambient light level in the se
5、ating area during projection shall be in accord with local codes and, if needed for note-taking, approximately 54 Ix (5 fc). 3.2 Stray light There shall be no direct stray light from any source or reflection falling on the screen or in direct view to the point that it interferes with viewing the pro
6、jected image. The ambient light on the screen shall be as low as practicable. 3.2.1 Entrance to the projection area shall be masked to prevent stray light from falling on the projection screen and other disturbances. Slides shall be projected at an image light level (center) of at least 55 cd/m2 (1
7、6 fL) or approximately 60 times the ambient light level on the screen, which- ever is higher (see annex A.4). 4.4 Steadiness The image shall have vertical and horizontal steadi- ness better than 0.25% of image height (see annex A.l), as per SMPTE RP 105. 4.5 Matched projection In presentations requi
8、ring matched projection for product comparisons, the brightness shall be matched to within 2 7 cd/m2 (. 2 fL) and color to within Copyright O 1994 by the 595 W. Hartsdale Ave., White Plains, NY 10607 SOCIETY OF MOTION PICTURE AND TELEVISION ENGINEERS (914) 761-1100 Approved February 8,1994 SMPTE EGU
9、3 74 W 8357401 0001512 776 = EG 3-1994 an 05 CC color-correcting filter. Distributions of light for each projector shall be matched. 4.6 Color temperature With no film or slide in the gate, the color temperature of the light reflected from the screen shall be 5400 K t 400 K, the use of a xenon short
10、-arc lamp being assumed. 4.7 Image quality Using appropriate test films for evaluation, resolution shall be at least 56 lines per millimeter in the center and 48 lines per millimeter at the edges of the pro- jected image for both slides and motion pictures. The image shall be essentially free of obv
11、ious optical defects such as color fringing,geometric distortion, etc. (see SMPTE RP 105). 5 Imagesize 5.1 Picture height shall be the same for all for- mats. For normal presentation, a 1.37:l aspect ratio is preferred for motion pictures (see ANSVSMPTE 195, style C; and ANSVSMPTE 233). 5.2 Seating
12、areas shall be within a distance of 5 picture heights f 3 picture heights from the screen. I 5.3 Slide projection shall be set up assuming horizontal slides (24 x 36-mm image area) is 2-in square mounts. 5.4 Keystone distortion shall be kept to a mini- mum and in no case shall the projection axes be
13、 more than 10 off center. 5.5 The screen, when illuminated by white light from the projector, shall show no visible defect due to seams, wrinkles, scratches, discolor- ations, etc. 6 Equipment 6.1 Projection equipment shall be operable throughout the conference period. 6.2 The equipment shall not ge
14、nerate objection- able noise or interfere with the speaker (see 6.5). 6.3 Projection equipment shall be installed so as to block the least number of seats. Sufficient clearance shall be provided so that no shadows will be cast onto the screen. 6.4 Projection equipment preferably shall be installed i
15、n a permanent projection booth. 6.5 If installation in a permanent projection booth is impracticable, projection equipment shall be installed behind the rearmost seats. In such a case, the projection equipment and oper- ators shall be shielded from the audience by a suitable sound and light baffler
16、or heavy drapes. An overhead projector may be operated by the speaker in front of the audience. 6.6 Slide projectors shall be activated by remote control if requested by the speaker. 6.7 A projected-light pointer shall be available to the speaker. 6.8 Temporary wiring and installation for control, s
17、ound, or power service shall be installed in accordance with local codes, and shall be positioned and mechanically and electri- cally protected with regard to the safety of those in the room. 6.9 Prior to the papers session, all projection equipment shall be correctly aligned and checked using the a
18、ppropriate test materials to ensure the correct sound levels, aperture plates, light levels, etc. 6.10 Signal lights shall be used by the chairman to notify the speaker two minutes before and at the end of his allotted time. 6.11 The number of the paper being given shall be displayed both inside and
19、 outside the audito- rium. 6.12 Television monitors shall be located along the left- and right-hand sides of the seating area, and shall be positioned so they are not hidden by a standing person or block the speaker from view. 6.12.1 Color monitors capable of accepting a baseband video signal are pr
20、eferred over rf- only receivers. Combinations monitor-receivers Page 2 of 3 pages SMPTE EGU3 94 8357403 OOOL5L3 622 EG 3-1994 are the most desirable choice. Color monitors shall be set up and matched according to appli- cable standards for color, brightness, etc. 6.13 Two-way communication by teleph
21、one or headset should be provided between the projec- tionist and the session chairman and speakers lounge. 7 Projectionists An appropriate number of qualified projectionists shall be available as may be needed for each technical session. Annex A (informative) Additional data A.l All specifications
22、given in this guideline are in accor- dance with ANSI/SMPTE 196M and SMPTE RP 59. A.2 The presentation of papers at conferences should be considered as a remote production. The responsibility for the overall production should be assigned to a director or producer to ensure that a professionally coor
23、dinated pre- sentation is realized. In addition, it is recommended that a qualified technical supervisor be assigned to assemble a professional crew to undertake the setup, testing, and oper- ation of the audio-visual facilities. A.3 Test films suitable for checking the parameters speci- fied in thi
24、s guideline are available from the Society of Motion Picture and Television Engineers. A.4 By maintaining the same brightness for all formats, including slides, photography of the screen by the audience is simplified and adaption is less of a problem. AS Slide projectors in the speakers lounge shall
25、 represent the exact type being used in the projection area to prevent incompatibility with trays or other slide carriers. Annex B (informative) O Bibliography ANSI/SMPTE 195-1993, Motion-Picture Film (35-mm) - SMPTE RP 59-1986 (R1990), Color and Luminance of Motion-Picture Prints - Projectable Imag
26、e Area Review Room Screens for Viewing Motion-Picture Materials Intended for Slides or Film Strips ANSI/SMPTE 196M-1993, Motion-Picture Film - Indoor SMPTE p 105-1994, thd for Determining the D Theater and Review Room Projection - Screen Luminance and Viewing Conditions of Jump and Weave in Projected Images 35- and 16-mm Motion-Picture ANSI/SMPTE 233-1992, Motion-Picture Film (1 6-mm) - Projectable Image Area and Projector Usage Page 3 of 3 pages
