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Projector buying guideProjector FAQ
Projector buying guide: brightness, resolution and throw distance
Start with the room. How much light gets in and how big the picture has to be decide most of the choice. After that, check the resolution, the light source and the ports.
1. Brightness: compare ANSI lumens
ANSI lumens are measured by averaging the brightness at nine points on the screen, and BenQ calls it the only brightness measure with a standard method certified by an international body (BenQ). Colour matters too. Epson says the colour brightness of some projectors can be as little as a third of the lumens on the box, so it lists white and colour brightness separately (Epson). The Epson EB-E01 XGA Projector is rated 3,300 lumens for both (Epson).
Some small LED projectors quote "LED lumens" or "light source lumens" instead. BenQ points out that LED lumens aren't certified by any international body, and its rough conversion is to divide them by 2.4, so 2,400 LED lumens is about 1,000 ANSI lumens. A name like "Smart LED 8000 Lumens Mini Projector" doesn't say which kind of lumens it means, so ask for the ANSI figure before you compare it with a business projector.
As a guide, ViewSonic puts projectors under 3,000 lumens in dark rooms and home use. It suggests 3,000 to 3,999 ANSI lumens for a small meeting room or classroom with little outside light, and 4,000 to 4,999 for 10 to 50 people with an 80-inch or bigger picture (ViewSonic). If you can't darken the room, go higher.
2. Check the native resolution
Native resolution is the number of pixels the projector actually shows. Our range covers four: SVGA (800 x 600) on the ViewSonic SP3 PA503S (ViewSonic), XGA (1024 x 768) on the Epson EB-E01, WXGA on the Epson EB-W53 and CO-W01, and Full HD (1920 x 1080) on the Epson EB-FH52 Full HD 3LCD Projector.
SVGA and XGA are enough for slides, spreadsheets and classroom notes, and they give a squarer 4:3 picture. Full HD gives a wide 16:9 picture and looks much sharper for films, football and detailed drawings. On home projectors, "supports 4K" often means it accepts a 4K signal and scales it down, so read the native figure on the spec sheet.
3. Measure the throw distance and screen size
The throw ratio tells you how far back the projector has to sit: distance divided by picture width. The ViewSonic PA503S has a throw ratio of 1.96 to 2.15 and projects pictures from 30 to 300 inches (ViewSonic). A 100-inch 4:3 picture is about 2 metres wide, so it needs to sit roughly 4 to 4.4 metres from the screen. Placed 3 metres back, it gives a picture of about 69 to 75 inches.
Measure your room before you buy, then pick a screen to match. See projector screen price in Nepal for tripod, wall-mount and electric screens from 60 to 150 inches.
4. Lamp, LED or laser
Business projectors like the Epson EB-E01 and ViewSonic PA503S use a lamp, which wears out and has to be replaced. Epson rates the EB-E01 lamp at 6,000 hours in normal mode and 12,000 in eco mode (Epson). ViewSonic rates the PA503S at 5,000 hours, or 15,000 in SuperEco mode (ViewSonic). Eco modes trade some brightness for longer lamp life.
LED projectors, such as the Ant Esports View models and the T10 Android LED Full HD Home Cinema Projector, have no lamp to change and are usually small and quiet, but most small ones give far fewer ANSI lumens than a lamp business projector. They suit a dark room better than a bright classroom. Laser projectors also have no lamp and cost more.
5. Ports and smart features
Check the ports against what you'll plug in. Most laptops now use HDMI, but some older office PCs only have VGA. The ViewSonic PA503S has one HDMI input and two VGA inputs (ViewSonic), so it works with both.
Android and smart projectors, like the T10, run apps on their own, so you can watch YouTube without a laptop. If a projector has HDMI but no apps, an Android TV box can add them. A wireless presenter such as the ViewSonic MP200 Wireless Presenter lets you change slides from across the room.
Buying from Quality Computer
Every projector comes with a VAT bill. We usually deliver all over Nepal in 2 to 5 days, and delivery is free within 15 km on products over Rs 5,000. You can also visit our store on Bhadrapur Road, Birtamode, or call 023-530150 or 9863609150.
More reading: Which Android TV box to buy · Printers, scanners and other peripherals
Projector FAQ
How many lumens do I need in a projector?
For a dark room at home, under 3,000 ANSI lumens is usually enough. For a small classroom or meeting room with little outside light, ViewSonic suggests 3,000 to 3,999, and 4,000 to 4,999 for 10 to 50 people. Compare ANSI lumens, not LED lumens.
Which projector resolution should I buy?
XGA or WXGA is enough for slides and classroom work. Choose Full HD (1920 x 1080) for films, sport and detailed images, and check that it's the native resolution, not just a supported input.
How far from the screen should a projector be?
Multiply the picture width by the throw ratio on the spec sheet. With a throw ratio of 1.96 to 2.15, as on the ViewSonic PA503S, a 100-inch 4:3 picture needs about 4 to 4.4 metres.
How long does a projector lamp last?
Thousands of hours. Epson rates the EB-E01 lamp at 6,000 hours in normal mode and 12,000 in eco mode, and ViewSonic rates the PA503S at 5,000, or 15,000 in SuperEco mode. LED projectors have no lamp to replace.
Which projector brands do you sell?
Acer, Ant Esports, BYINTEK, Epson, NEC, ViewSonic and Wanbo, plus a T10 Android LED projector. Every price on this page is our current website price.
Do you deliver projectors outside Birtamode?
Yes. We usually deliver all over Nepal in 2 to 5 days, and delivery is free within 15 km on products over Rs 5,000.
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