Projectors Have Been In Use Since 1420 (thanks To The Idea Of Johannes De Fontana) With The Early Projectors Being Just A Lamp, Some Lens, And A White Cloth For A Screen. Although The Principles Applied To That Projector Is Pretty Much Similar To What We Have Today, Modern Projectors Have Been Developed To Use Some Complex Technology. And Even What Used To Be Simply A White Cloth For A Projection Screen Is Now Made Up Of Heavy White Vinyl (as In The Case Of Movie Screens) Divided Into Four Categories: Pearlescent, Matte White, Silver, And Glass Bead. If Youre A First Time Buyer Of A Projector For Home Or Business Use, You Need To Consider Some Projectors Information Through The Following Aspects. Resolution Determines The Sharpness And Clarity Of The Picture On The Screen. Its Measured In The Number Of Pixels (or Picture Elements) The Projector Uses To Create An Image. Resolution Comes In Four Types Namely: SVGA (800x600), Perhaps The Cheapest Today; XGA (1,024x768) Projectors Are Generally More Expensive But Theyve Become More Popular As Well Due To The Increase In XGA Resolution Computers. Next Is An SXGA (1,280x1, 024) Projector Which Is Notably More Expensive And Is Primarily Used For Command And Control, Engineering, And Applications Such As CADCAM In Which Resolution Of Minute Details Are Very Important. Lastly, Theres The UXGA Or 1,600x1,200 Projector For Very High Resolution That Supports A Vast Range Of Computer Equipment. Choosing A Projector Thats Lightweight And Portable Should Also Depend On The Purpose You Need For The Projector. Projector Information Includes Weight And Portability. However, In Any Case, It Is Much Better To Have A Lightweight Projector Whether You Use It For Home Entertainment Or As A Traveling Presenter. Some Brands Manufacture Projectors To As Light As 600 Grams!Next For The Projectors Information Is Brightness. Four Primary Considerations Should Be Looked Up When Choosing A Projectors Brightness. These Include The Number Of People Who Will Typically Be In The Room Because The Bigger The Audience The Larger The Images Need To Be, Thus Requiring An Increase In Brightness; How Much Light Is Present In The Room; The Kind Of Projection Screen Available; How The Projector Will Be Used. Projectors Brightness Is Rated In ANSI (American National Standard Institute) Lumens. Available Today Are Lumens 1000-2000, 2000-3000, And 3000-up. The Lower The Lumens, The Lesser Its Brightness. All Of These Projectors Information For Consideration Can Greatly Affect The Way Your Chosen Projector Reflects Images.
