What do Projector Lumens, Contrast Ratio, and Resolution mean?
| Ariful Islam
We know that projectors are the hot thing in the market right now.
That’s why it is very important to understand about the basic key features of the projectors before you go and buy one.
Here are the three most commonly asked specifications regarding projectors.
Projector Lumen Brightness
The brightness of a projector is calculated in ANSI lumens. Home theater projectors for the most part begin at around 1000 lumens and range upwards to 2500 lumens. That's only the tip of the iceberg. Your room's lightning condition is the integral factor on what number of lumens your projector needs. Committed home theaters won't require as much brightness as a space with encompassing light from windows or another lighting source.
The quantity of lumens you require relies upon two key things - the size of the picture you are anticipating and the amount of light in the room that will contend with your projector's knob.
A 2,000-lumen projector will extend a sensibly vast picture in a dim room, however in the event that you need to keep the room splendid; you may require 4,000-lumens of light yield. When taking a gander at projectors, don't be excessively worried by little contrasts.
Because of the way that the human eye reacts to light, a 2,100-lumen projector won't be fundamentally dimmer than a 2,300-lumen projector. Truth be told, the distinction won't not be recognizable, in spite of the fact that the contrast between a 2,000 and a 3,000-lumen projector would be.
Contrast ratio actually alludes to the distinction between the blackest dark and the whitest white in a picture.
A projector with a contrast ratio of 10,000:1 isn't really five times superior to one with a 2,000:1 proportion. The contrast proportion does not represent how the projector shows every one of the shades of dark in the middle of the blackest dark and whitest white.
The difference ratio communicates this numerically. While a higher differentiation proportion is superior to a lower one, since there's no famous standard for rating contrast, it's feasible for a 10,000-to-1 projector to really outflank a 100,000-to-1 projector.
Given ordinary business projection conditions and the kind of material that generally gets projected upon, differentiate proportions are substantially less essential. Business projectors with proportions estimated in the hundreds, rather than the thousands, are normally more than sufficient.
Resolution alludes to the quantity of lines of a picture showed on the screen. The more the resolution, the more prominent the photo quality.
Projectors for the most part accompany fixed resolutions, which means paying little heed to the nature of the flag they get; they can just yield in one resolution.
The present home theater projectors come in various settled resolutions including XGA (1024 x 768), WXGA (1280 x 800), HD (1920 x 1080) and, from time to time, 4K (4096 x 2160).
SVGA (800x600 pixels, 4:3 perspective ratios): SVGA projectors are low-end projectors that are more moderate and appropriate for displaying basic information like diagrams, video cuts, and many more.
XGA (1024x768 pixels, 4:3 perspective ratios): XGA is generally utilized. Most PCs utilize XGA as their local resolution, so blending PCs to XGA projectors is advisable.
WXGA (1280x800 pixels, 16:9 perspective ratios): WXGA is the widescreen variant of XGA — conveying a similar vertical resolution yet giving 20% more horizontal resolution. This has turned into a typical resolution for tablet PCs and cell phone.