Pro­jec­tion power

What to keep in mind while buy­ing a pro­jec­tor

Gadgets and Gizmos (India) - - CONTENTS - By Nidhi Sin­gal

PRO­JEC­TION SIZE: There is a wide va­ri­ety of pro­jec­tor avail­able these days but be­fore buy­ing one, you need to do some cal­cu­la­tions. The most im­por­tant of them all is the pro­jec­tion size that you are look­ing at. This is al­ways mea­sured di­ag­o­nally. But along with this, you also need to con­sider the dis­tance at which you plan to place your pro­jec­tor. This may sound tech­ni­cal but there are web­sites that al­low you to cal­cu­late the throw dis­tance ra­tio that the pro­jec­tor you are buy­ing one should have. For in­stance, if you are plan­ning to place your pro­jec­tor 5 feet away for a 55inch pro­jec­tor, than the dis­tance throw ra­tio of your pro­jec­tor should be 1.1. While most of the leading pro­jec­tor man­u­fac­tur­ers such as BenQ, Pana­sonic, etc. pro­vide dis­tance cal­cu­la­tor on their web­sites, throwdis­tance­cal­cu­la­ of­fers a sim­ple to un­der­stand cal­cu­la­tion.

DLP VER­SUS LCD VER­SUS LED PRO­JEC­TORS Don’t feel shy about not know­ing what is the dif­fer­ence be­tween the DLP or the LCD pro­jec­tor. Well, these are the dis­tinct tech­nolo­gies. The DLP (Dig­i­tal Light Pro­cess­ing) pro­jec­tors have got a chip made of tiny mi­cro­scopic mir­rors and a spin­ning colour wheel. In terms of pro­jec­tion, it de­liv­ers sharp im­ages and has got a bet­ter re­sponse time. On the other hand, the LCD pro­jec­tors use liq­uid crys­tal dis­plays that has no mov­ing parts. Hence, these cost slightly less. The plus point of LCD pro­jec­tors is the bet­ter sat­u­ra­tion and lower noise. On the downside, they re­quire fil­ter main­te­nance and have less con­trast. Lastly, LED pro­jec­tors use tiny LEDs that de­liv­ers bet­ter colours with lower power con­sump­tion. With the life­span of over 20,000 hours, they vir­tu­ally re­quire zero main­te­nance. LED pro­jec­tors are usu­ally smaller and com­pact and gen­er­ate less heat. But they lack the bright­ness that an LCD or a DLP can of­fer.

WALL OR SCREEN? In a pro­fes­sional setup, the pro­jec­tion is al­ways made on screen as it of­fers a smoother pro­jec­tion with high re­flectance, they re­flect light bet­ter and even works in a bright room. While you can use a wall to project, the ex­pe­ri­ence will not be the same. Also, the wall needs to be smooth and painted white. It pro­jec­tion re­ally isn’t good on a yel­low, pink­ish or a coloured wall.

VIEW­ING DIS­TANCE: Just the way the dis­tance be­tween the pro­jec­tor and the wall is im­por­tant, so is the view­ing dis­tance. Ideally, one should sit at least at a dis­tance of twice the im­age width.

CON­NEC­TIV­ITY: The more the mer­rier stands true for con­nec­tiv­ity on a pro­jec­tor too. While VGA, AVI and HDMI are usu­ally present, pre­fer hav­ing a USB for plug­ging and play­ing im­ages and videos. But if you are look­ing at set­ting up a big home theatre, where the pro­jec­tor will be ceil­ing mounted, you can do with­out a USB too. For such a setup, you will have to keep the pro­jec­tor con­nected to a DVD or a blu-ray player. Pair it with a home theatre for a sur­round sound out­put.

WHAT ABOUT POCKET PRO­JEC­TOR? Pocket pro­jec­tor, also re­ferred as Pico pro­jec­tors has grown as a cat­e­gory dur­ing the past cou­ple of years. These are usu­ally LED pro­jec­tors that are com­pact and are good at pro­ject­ing up to 60 inches. But they aren’t re­ally good to use for a big­ger room with am­bi­ent light. These pro­jec­tors per­form the best in dark. While we saw a few such pro­jec­tors be­ing a part of dig­i­tal

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