What Is a Dual-Image Projector?
Dual-image projectors allow you to project images from two different sources at the same time, such as from a DVD player and a laptop. The images are typically projected side by side onto a screen or wall. Some may require a larger-than-normal screen to fit both images -- particularly if you want the images displayed in a widescreen instead of standard square format.
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Uses
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Projecting two images at once is desirable in many instances. Teachers might want to show a short video while the presentation notes remain on the side. Conference planners sometimes want to show a logo beside a live image of the speaker at the front of the room, while companies at trade shows may want images of two products scrolling simultaneously.
Picture by Picture
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Dual-image projectors allow you to show two images side by side while in picture-by-picture mode. These images are equal in size. After attaching both input devices, navigate through the projector's menu to select which device displays on the left and right, then choose the input type, if necessary.
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Picture in Picture
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Some dual-image projectors also allow you to use a picture-in-picture mode, similar to what's offered by many televisions. In this mode, the image you choose fills the frame, and a second image appears as a smaller inset on top of the first image. Use the projector's menus to specify where the inset should appear on the screen. Some projectors allow you to change the first image so it's not full screen, but so that it's still larger than the second image.
Cost
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Although they offer convenience, these dual-image projects come with a hefty price tag. For example, as of the time of publication, the Sanyo PLC-WM4500 is about $4,500, while the Panasonic PT-FX400U is a little more affordable at around $3,900.
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References
- Photo Credit Jupiterimages/Photos.com/Getty Images
