by: Bill Ransom
There are four types of rear-projection TV's available currently. These are the older CRT rear-projection, DLP rear-projection, LCD rear-projection and LCoS rear-projection. Most available today are HD ready and can display digital signals.
CRT Rear-projection : these are the projection TV's that have been on the market for years. CRT or Cathode Ray Tube technology is the same technology that your old TV set's used. There are three tubes in these projection TV's each for a primary color and they project the light onto the TV's screen. Since they require three CRT tubes these TV's are very big and deep. Most CRT projection TV's come in 50 inches or larger screen size. CRT rear-projection TV's are becoming extint and many companies do not make them anymore. They need to be adjusted frequently to keep the colors in line and the image quality and viewing angles are not as good as the next three rear-projection technologies.
DLP rear-projection : (Digital Light Processing) are based off of technology developed by Texas Instruments. They produce an image by sending light through a spinning wheel of color which then sends the light to almost a million small mirrors. These mirrors produce the image onto the screen. DLP rear-projection TV's have slimmer cabinets than CRT rear-projection TV's. The biggest complaint with DLP rear-projections are the "rainbow effect" many people see. Also the bulb that produces the light for the TV needs to be replaced usually every 8,000 viewing hours.
LCD rear-projection : LCD rear-projection's use a LCD screen which is projected unto the screen. These TV's like DLP rear-projection are slimmer than the CRT rear-projection TV's. Image quality on LCD rear-projection is not as good as DLP and viewing angles are not that large. Viewing an LCD rear-projection from the center position is recommended. Also many buyers complain that moving images are pixelated and I have seen this first hand.
LCoS rear-projection: is the newest technology of the four types of rear-projection TV's. Liquid Crystal on Silicon rear-projection TV's is basically a hybrid between an LCD rear-projection and a DLP rear-projection. In these TV's light shines through LCD panels and is then modulated through these panels by the liquid crystals. The liquid crystals do the job that the mirrors do in DLP rear-projection TV's. LCoS are touted as not having the "rainbow effect" and can be made thinner than the other rear-projection TV's. A downside to these TV's is the technology is still very expensive so many companies do not make them.
PRO'S:
PRICE
larger screens than Plasma or LCD displays
CON'S:
Depth of TV cabinet
image deficiencies such as the "rainbow effect" and washed out images in well lit rooms
viewing angles are inferior to Plasma and LCD displays
*In most cases a Plasma or LCD display will have overall better image quality than any of the current Rear-Projection Televisions on the market today. Projection TV's just cannot reproduce the contrast and color accuracy or saturation that the current Plasma Technology can achieve. DLP and LCD rear- projection and the newer LCoS tenchnology has all come a long way since the days of the CRT rear-projection television but cannot equal a good Plasma or LCD display. Plasma and LCD technology also have DLP and LCD rear-projection beat in the areas of viewing angles and being used as a computer display. While most new rear-projections can be hooked up to a Xbox or Playstation they are not meant to be computer displays where LCD Televisions where.
Where DLP and LCD rear-projection TV's do come out ahead is with Price per viewing inch. Do not get me wrong DLP and LCD rear-projection TV's are great and unless you are the type of person that will get upset if the images you are viewing are not perfect then a 50 - 60 inch projection television provides a superb viewing experiance by all means. If you are a HDTV junkie and need that perfect video image then go with a Plasma or LCD Display but remember you will pay alot more.
About The Author
Bill Ransom has been in the technology industry for many years as well as retail electronics.
http://www.flatscreenbuyers.com
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Photography Poses ? The Missing Ingredient
Photography Poses ? The Missing Ingredient
by: Robert Bezman
You've read all the "best digital camera" articles, got the best price on your first digital camera, and even glanced at its owner's manual. Are you itching to take some shots of your family, or what?
Slow down, soldier. Before you take 200 shots that seem great at the time, but then upon review of the final picture are less than what you expected, let's prepare. Prepare?!?! I'll bet you thought charging the battery was the hardest part of taking great photos, didn't you? Sorry to disappoint you, but if you want to improve your photo results 50% in 2 minutes, let's review some basic advice of the pros.
There are two categories of GENERAL ADVICE which applies, regardless of whether you're using a digital camera to take family portrait poses, baby pictures, pet portraits, group pictures, funny photos, or even maternity portraits. The first category is...
"Good Planning" Advice...
Photography Poses ? The Missing Ingredient
Lcd tv > Photography Poses ? The Missing Ingredient
All about HDTV
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The HDTV has become increasingly popular since it?s introduction. There are many well-known electronic manufacturers that have designed many models of the HD style TV. There are multiple sizes, styles and colors that can be attributed to a HD television. Likewise, there are various price tags found on the HD television. With so many choices and decisions ahead of you, don?t feel overwhelmed; there are many great resources to help make your search as quick and painless as possible.
HDTV has been around since the mid 1960?s. In Japan, the first model of the HDTV was created. The innovative electronic geniuses of the United States were quick to follow and the race to perfecting the high definition technology was off to the races around the mid 1990?s.
Basically, the term ?HD? refers to the quality of the broadcast signal that is sent through the television set. The high definition signal represents images...
All about HDTV
Lcd tv > All about HDTV
Guide to Buying a Flat Screen TV
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by: Nathan James
If you?re ready to invest in one of the fabulous new flat screen televisions that everyone is talking about these days, there are some things you should know. There are several different types of flat screen technology, and it?s important you understand the pros and cons before you spend thousands of dollars on a TV.
Most people buy electronics as a long term investment, hoping their TV will last them for many years to come. By understanding the basics of flat screens you are much more likely to make a wise decision.
Plasma versus LCD
The two major types of options when it comes to buying a flat screen TV is plasma or LCD (liquid crystal display). Plasma televisions are more expensive than LCD televisions, but the vast difference in price seems to be getting smaller. However, if you?re looking for a massive flat screen TV, plasma is often your only option. The larger the LCD, the...
Guide to Buying a Flat Screen TV
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iPod Wireless Speakers and Headphones
iPod Wireless Speakers and Headphones
by: Dale Ewans
The iPod seems to have induced a certain trend in the consumer electronics industry as many companies on the market rushed to manufacture accessories for the little device that allows you to take music with you wherever you go. Speakers and headphones were among the first choices as iPod accessories for consumer electronics companies. The next step was wireless speakers and headphones to allow more freedom of movement. We'll try to discuss the pros and cons of wireless peripherals for the iPod as well as the models that each wireless component works with.
Logitech
Logitech began marketing in 2005 a wireless headphone unit that works with any model of iPod that has a dock connector on the base. This feature is standard on all new models and is available on older models as well. The headphones use Bluetooth technology to connect to the iPod through an adapter that transmits the signal...
iPod Wireless Speakers and Headphones
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