There are three main technologies used for projection – DLP, LCD and LED. If you must use a wall, make sure it is as smooth as possible (a plaster of Paris coat helps) and painted in flat white. Having said all this, you can use a wall too – there are obvious cost advantages. ![]() Finally, screens are also the correct shade of white/grey, solving the problem of a colour cast that some walls may cause. Some screens have black borders that add to the perceived contrast – making the image seem better. Some screens have gain – they reflect light better, thanks to shiny particles – and this helps in brighter rooms or if your projector is old or has low brightness. A screen will always be smoother than a wall and it will offer higher, more even reflectance. Screens are the best way to get the best performance from a projector. If not possible due to placement/room constraints, then you can move on to digital corrections. ![]() Tip: Some aberrations can be corrected in-projector (keystone for example) but proper placement is the most preferable. Here, you just input a distance or required screen size. To make things simpler, many manufacturers offer a distance calculator on their website for various models. Ideally, you should be sitting at a distance that is more than twice the width of the image. So if your projector is placed 10 feet away from the screen and has a throw ratio of 1.8-2.22, then you can get an image size that ranges between 54 – 66 inches. You can calculate the projection image size by dividing the distance between wall and the projector by the throw ratio of the projector. This is usually a range, thanks to the optical zoom – you can find it in the user manual or specifications page online (if it's for a projector you plan to buy). This refers to the size of image the projector can create for a given distance. Replacement Air Filter Cartridge.Choosing for Room Size/Viewing Distance Every projector has a throw ratio. A Range of Wideangle and Telephoto Lenses. ATA-Style Shipping Case with Wheels and Telescoping Handle. Soft Carry Bag with Wheels and Telescoping Handle. Remote Control Cable,Lens Mount Attachment, Lens Light Block, Lens Spacer. Wireless/wired Remote with Mouse Control & 2 x AAA batteries. Included Accessories: Owner’s Manual on CD-ROM. Converts Interlace to Progressive scan.Quiet operation: fan noise as low as 31.8 dBA.Optional Wideangle and Telephoto lenses.Compatible with Computer sources up to UXGA, video sources up to 1080p.Accepts analog and digital computer input, analog and digital w/HDCP video.Includes most professonal input configurations, including 5BNC and DVI.Smart data compression / expansion, and video scaling. 3 panel LCD imaging for rich, color saturated computer and video projection.A true portable / installation projector, engineered for extended use.6500 ANSI Lumens bright, at 90%+ uniformity, and a 2000:1 contrast ratio.Compatibility up to analog UXGA, digital 1080p(psf/24/25/30). ![]() New horizontal lens shift and vertical projector orientation.New self-advancing cartridge air filter reduces maintenance.New Inorganic imaging engine is optimized for extended use.New LCD panels deliver a remarkable 2000:1 contrast ratio.Our brightest portable projector: 6500 Ansi Lumens!.
0 Comments
Leave a Reply. |