NEC Is15-2k Digital Cinema Projector User Manual
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page 2.5 iS15-2K Cinema Projector: User Manual 2. Installation Using the anamor phic lens The projector can be configured by your installer to correctly display images that have been compressed horizontally (or stretched vertically) by an anamorphic lens when filmed. This can be achieved with or without the use of the anamorphic lens. As can be seen in the examples in Fitting the image to the DMD, earlier in this section: When using the anamorphic lens, all images (including 2.35:1) can be displayed using the full height of the DMD. Therefore the projection lens would not have to be zoomed to display 2.35:1 images. Projecting 2.35:1 format images We recommend the use of the anamorphic lens only when the mix of images to be displayed includes 2.35:1 format. This will enable all images to be displayed at the same screen height without needing to zoom the projection lens. Example If the anamorphic lens is not available: Where the mix of images to be displayed includes 2.35:1 format, then all other images will need to be zoomed to 80.6% (871/1080) in order to maintain the same screen height. As this is only just within the range of the available zoom lenses, some compromise will be necessary to pick a suitable screen size (see the Lens Chart for 2.35:1 images, later in this section). Example Alternatively, the projector could be configured to reduce all other images to a height of 871 pixels. 2.35:1 2048 x 871 pixels16:9 1920 x 1080 pixels Notes For more information about how the use of the anamorphic lens will affect the way the image is processed, see Fitting the image to the DMD, earlier in this section. For more information about how to fit and adjust the anamorphic lens, see Fitting the anamorphic lens, later in this section. 2.35:1 anamorphic 2030 x 1080 pixels16:9 anamorphic 1536 x 1080 pixels 16:9 zoomed to 80.6%
page 2.6 2. InstallationiS15-2K Cinema Projector: User Manual Notes For more information about how to fit and adjust the projection lens, see Fitting the projection lens, later in this section. For more information about how to determine the image size in pixels, see Fitting the image to the DMD, earlier in this section. For more information about Throw ratio factor (TRF), see Useful lens calculations, later in this section. This projector does not perform any image processing on signals connected to the DVI-D inputs - an external image processor such as the MMS 1000 is recommended for this purpose. If the anamorphic lens is being used, then the images will be projected with a 1.25x increase in width. This can be corrected by scaling the signal using an external image processor. Choosing the projection lens A number of lenses are available for use with the projector. Which lens you choose will depend on the screen size, image aspect ratio and projection distance. If the mix of images to be displayed includes images of varying aspect ratio, then you should base your choice of lens on the widest image that is to be projected. Method one: using the lens charts For the image sizes listed below, use one of the charts on the following pages, to choose a lens. full width images, including: native resolution 2048 x 1080 pixels 2.35:1 full width 2048 x 871 pixels If the image does not fill the full width of the DMD, this effectively increases the throw ratio of the lens. This can be corrected for by applying a Throw Ratio Factor. A Throw Ratio Factor (TRF) has been applied to the following charts: 1.85:1 full height1998 x 1080 pixels 16:9 full height1920 x 1080 pixels 1.66:1 full height1793 x 1080 pixels 4:3 full height1440 x 1080 pixels 5:4 full height1350 x 1080 pixels Method two: by calculation See the calculations, on the page immediately following the lens charts.
page 2.7 iS15-2K Cinema Projector: User Manual 2. Installation Notes If the mix of images to be displayed includes images of varying aspect ratio, then you should base your choice of lens on the widest image that is to be projected. The lenses available and their part numbers are listed below: 1.45 - 1.8: 1 zoom lens102-933 1.8 - 2.4: 1 zoom lens102-934 (note: these two lenses overlap) 2.2 - 3.0: 1 zoom lens102-935 3.0 - 4.3: 1 zoom lens102-936 Lens charts Native resolution 2048x1080, no anamorphic lens Use the chart below to choose which lens best suits your application. example • For a screen width of 15m at a distance of 25m, the 1.45 - 1.8: 1 lens would be best suited. •For the same screen size at a distance of 32m, the 1.8 - 2.4: 1 lens would be best suited. if you need to be more precise, then use the calculations on the page immediately following the lens charts. feet metres feet metres 10 15 20 25 30 35 40 45 metres 33 49 66 82 98 115 131 148 feet Throw distance 52 16 98 30 43 13 82 25 35 10 66 20 26 8 49 15 17 5 33 10 83 165 TRF (see page 15) = 1 Screen height Screen width
page 2.8 2. InstallationiS15-2K Cinema Projector: User Manual Notes If the mix of images to be displayed includes images of varying aspect ratio, then you should base your choice of lens on the widest image that is to be projected. The lenses available and their part numbers are listed below: 1.45 - 1.8: 1 zoom lens102-933 1.8 - 2.4: 1 zoom lens102-934 (note: these two lenses overlap) 2.2 - 3.0: 1 zoom lens102-935 3.0 - 4.3: 1 zoom lens102-936 2.35:1 full width image with anamorphic lens Use the chart below to choose which lens best suits your application. if you need to be more precise, then use the calculations on the page immediately following the lens charts. Lens charts, continued 10 15 20 25 30 35 40 45 metres 33 49 66 82 98 115 131 148 feet Throw distance TRF (see page 15) = 1 feet metres feet metres 52 16 98 30 43 13 82 25 35 10 66 20 26 8 49 15 17 5 33 10 83 165 Screen height Screen width
page 2.9 iS15-2K Cinema Projector: User Manual 2. Installation Notes If the mix of images to be displayed includes images of varying aspect ratio, then you should base your choice of lens on the widest image that is to be projected. The lenses available and their part numbers are listed below: 1.45 - 1.8: 1 zoom lens102-933 1.8 - 2.4: 1 zoom lens102-934 (note: these two lenses overlap) 2.2 - 3.0: 1 zoom lens102-935 3.0 - 4.3: 1 zoom lens102-936 2.35:1 full width image, no anamorphic lens Use the chart below to choose which lens best suits your application. if you need to be more precise, then use the calculations on the page immediately following the lens charts. Lens charts, continued 10 15 20 25 30 35 40 45 metres 33 49 66 82 98 115 131 148 feet Throw distance TRF (see page 15) = 1 feet metres feet metres 42 13 98 30 35 11 82 25 28 9 66 20 21 6 49 15 14 4 33 10 72 165 Screen height Screen width 2.35:1 full width image without anamorphic lens Where the mix of images to be displayed includes 2.35:1 format, and there is no anamorphic lens, then: • all other images will need to be zoomed to 80.6% (871/1080) in order to maintain the same screen height. As this is only just within the range of the available zoom lenses, some compromise will be necessary to pick a suitable screen size. example • at a distance of 40m, the 1.45 - 1.8 lens will zoom only from 27.5m to 22m screen width • at a distance of 24m, the 3.0 - 4.3 lens will zoom only from 8.0m to 5.5m screen width
page 2.10 2. InstallationiS15-2K Cinema Projector: User Manual Notes For an example of how to use the lens charts, see the first chart. The lenses available and their part numbers are listed below: 1.45 - 1.8: 1 zoom lens102-933 1.8 - 2.4: 1 zoom lens102-934 (note: these two lenses overlap) 2.2 - 3.0: 1 zoom lens102-935 3.0 - 4.3: 1 zoom lens102-936 1.85:1 full height image, no anamorphic lens Use the chart below to choose which lens best suits your application. if you need to be more precise, then use the calculations on page 5: Lens charts, continued 10 15 20 25 30 35 40 45 metres 33 49 66 82 98 115 131 148 feet Throw distance TRF (see page 15) = 1.025 feet metres feet metres 53 16 98 30 44 13 82 25 36 11 66 20 26 8 49 15 18 5 33 10 93 165 Screen height Screen width
page 2.11 iS15-2K Cinema Projector: User Manual 2. Installation Notes For an example of how to use the lens charts, see the first chart. The lenses available and their part numbers are listed below: 1.45 - 1.8: 1 zoom lens102-933 1.8 - 2.4: 1 zoom lens102-934 (note: these two lenses overlap) 2.2 - 3.0: 1 zoom lens102-935 3.0 - 4.3: 1 zoom lens102-936 16:9 full height image, no anamorphic lens Use the chart below to choose which lens best suits your application. if you need to be more precise, then use the calculations on page 5: Lens charts, continued 10 15 20 25 30 35 40 45 metres 33 49 66 82 98 115 131 148 feet Throw distance TRF (see page 15) = 1.1.07 feet metres feet metres 55 17 98 30 46 14 82 25 37 11 66 20 27 8 49 15 18 6 33 10 93 165 Screen height Screen width
page 2.12 2. InstallationiS15-2K Cinema Projector: User Manual 1.66:1 full height image, no anamorphic lens Use the chart below to choose which lens best suits your application. if you need to be more precise, then use the calculations on page 5: Notes For an example of how to use the lens charts, see the first chart. The lenses available and their part numbers are listed below: 1.45 - 1.8: 1 zoom lens102-933 1.8 - 2.4: 1 zoom lens102-934 (note: these two lenses overlap) 2.2 - 3.0: 1 zoom lens102-935 3.0 - 4.3: 1 zoom lens102-936 Lens charts, continued 10 15 20 25 30 35 40 45 metres 33 49 66 82 98 115 131 148 feet Throw distance TRF (see page 15) = 1.14 feet metres feet metres 59 18 98 30 49 15 82 25 40 12 66 20 29 9 49 15 20 6 33 10 10 3 16 5 Screen height Screen width
page 2.13 iS15-2K Cinema Projector: User Manual 2. Installation Notes For an example of how to use the lens charts, see the first chart. The lenses available and their part numbers are listed below: 1.45 - 1.8: 1 zoom lens102-933 1.8 - 2.4: 1 zoom lens102-934 (note: these two lenses overlap) 2.2 - 3.0: 1 zoom lens102-935 3.0 - 4.3: 1 zoom lens102-936 Lens charts, continued 4:3 full height image, no anamorphic lens Use the chart below to choose which lens best suits your application. if you need to be more precise, then use the calculations on page 5: 10 15 20 25 30 35 40 45 metres 33 49 66 82 98 115 131 148 feet Throw distance TRF (see page 15) = 1.42 feet metres feet metres 73 22 98 30 61 19 82 25 50 15 66 20 37 11 49 15 25 8 33 10 12 4 16 5 Screen height Screen width
page 2.14 2. InstallationiS15-2K Cinema Projector: User Manual Notes For an example of how to use the lens charts, see the first chart. The lenses available and their part numbers are listed below: 1.45 - 1.8: 1 zoom lens102-933 1.8 - 2.4: 1 zoom lens102-934 (note: these two lenses overlap) 2.2 - 3.0: 1 zoom lens102-935 3.0 - 4.3: 1 zoom lens102-936 Lens charts, continued 5:4 full height image, no anamorphic lens Use the chart below to choose which lens best suits your application. if you need to be more precise, then use the calculations on page 5: 10 15 20 25 30 35 40 45 metres 33 49 66 82 98 115 131 148 feet Throw distance TRF (see page 15) = 1.52 feet metres feet metres 78 24 98 30 66 20 82 25 53 16 66 20 39 12 49 15 26 8 33 10 13 4 16 5 Screen height Screen width