![]() ![]() However, LCDs require constant filter maintenance and output less contrast. If you are on a budget a single chip LCD projector is ideal while 3-chip LCDs offer better colour saturation, lower noise levels and work better for movies. On the other hand, LCD projectors use liquid crystal displays, have no moving parts and thus are generally less expensive. ![]() The effective lamp life of a DLP projector is only 2000-5000 hours and some people see colour ghosting/banding in some scenes. DLP projectors deliver sharp images, don't need any filters, have a better response time as well as 3D capabilities. DLP (Digital Light Processing) uses a chip made of tiny microscopic mirrors and a spinning colour wheel to create an image. 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. #Projektor med led manual#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. Choosing for Room Size/Viewing Distance Every projector has a throw ratio. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |