Home Cinema Projectors Buying Guide
There are a number of important factors to take into consideration when choosing
a home cinema projector, these are to do with light, image quality and usability.
Projector Brightness - This is measure in ANSI lumens, the more natural
(or ambient) light in your room the greater the ANSI lumens recquired. A room
that is properly isolated from ambient light doesn't need as much brightness
and will only need 700 lumens or better, at the other end of the scale rooms
with a lot of natural light recquire at least 2500 lumens.
Projector Resolution - The greater the resolution, the greater the pixel
density and the greater the pixel density the greater the image quality will
be. So look for maximum resolution, most will be 1024x768, but if you can afford
the 1280x720 or greater then go for that, they'll do justice to High Definition
pictures as well as offering a generally much better viewing experience. Also
the larger the viewing screen the more important it is that the resolution is
high.
Projector Lamp Life - If you're only using the projector for special
occasions or to watch the odd movie the lamp is going to last quite a few years,
more regular use and it's going to need replacing, so you'll want to take the
cost of lamp replacement into consideration. Lamp life is usually about 2000
to 4000 hours (this is until it starts to dim - you can keep using it for longer
than this but the brightness will diminish) but you can get projectors with
a longer lamp life - as much as 10000 hours.
Projector Usability - Most projectors are pretty easy to use these days,
but you might want to see if it has a remote control for convenience plus lens
shift and wider zoom ranges because it will make it easier to install.
Projector Positioning - On a table or ceiling mounted? The advantange
of a ceiling mounted projector is that you only have to do the set up once and
it's out of the way, if however you want to take the projector elsewhere or
store it away after use you can plonk it on a table, downisde of this is you
have to spend time adjusting the distance to get the optimal viewing experience
and reconnect everything each time you want to watch something.
Projector Technology - Home cinema projectors are mainly LCD (Liquid
Crystal Display) or DLP (Digital Light Processing), less common is LCoS (Liquid
Crystal on Silicon). There are advantages and disadantages to all of them, many
of them being less of an issue as new products come out - all of these technologies
are being improved at a very rapid pace.
DLP Projectors - The pixels are closer together and so the image should
be smoother, especially significant when projecting an image on to a large screen.
Inferior DLP projectors may have a "halo effect" , caused by light
it makes the outline of the projection seem to have a grey border, not an issue
with quality projectors however. The consensus is that DLP is better for home
cinema projection because of the screen quality, but it's important to note
that the high end LCD Projectors are excellent and the technology is improving
all the time.
LCD Projectors - The main advantage over DLP is that it produces more
saturated colours, this enhances the brightness and produces more vivid colouring,
DLP can achieve this too it just needs a brighter lamp. DLP produces a much
smoother image generally than LCD where there can be a "chicken wire"
effect, this is mainly on inferior or old LCD projectors however, good new models
have a much better contrast ratios.
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