If you're like many people today who have purchased a new large flat-screen HDTV and love the clear, crisp picture, you're probably wondering, what is high definition television anyway? HDTV is the latest, best thing to happen to tv technology since the invention of colorized TV. HDTV offers a better quality picture with richer detail than its older counterpart. The picture is also wider and compared to regular televisions, HDTV offers luminance definition horizontally and vertically. These televisions offer more of what is seen at a movie theater.
The one thing that makes it stand apart from conventional television is the picture quality. Standard TV's have almost imperceptible lines running through the picture, but can be noticed if you look closely. These are called active lines and regular televisions have 486 of them. HDTV's have over twice as many active lines, but even if you looking closely, you will not see them. This fine-grain high definition picture also receive much more image information compared to standard TV's. Not only is the picture excellent, but the sound quality is also superb.
For a person to really understand what is high definition television, knowing the basics of resolution helps. Standard televisions all contain 480i or 480p resolution or visible scan lines, which according to the kind of TV it is, these lines are either scanned progressively (p) or they are interlaced (i), which provides the picture we see. HDTV's are either 720p, 1080i or 1080p. High definition televisions have a standard of 720p, or lines of scanned progressive resolution. This provides a smoother, movie-like image with a sharper, cleaner picture. The most common HDTV format is 1080i resolution, which provides a more detailed picture than does the 720p. Smaller screened televisions really do not benefit from 1080 resolution.
Digital televisions that are capable of displaying television signals in HDTV of 720p, 1080i or1080p are called HDTV capable. Digital TV's that are HDTV capable and have a HDTV receiver built in to them are called "integrated". HDTV's that are capable of displaying high definition resolution but do not have a receiver are called HDTV capable monitors. For those who know little to nothing about what really makes HDTV so superb, just viewing the picture is enough to prove the obvious advantage of upgrading to a high definition television.
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Article Source: [http://EzineArticles.com/?High-Definition-Television---What-is-It?&id=4455935] High Definition Television - What is It?
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Friday, June 11, 2010
Wednesday, June 2, 2010
Digital Camera Buying Guide
To make it easier for you to decide on which camera to buy from the overwhelming number of choices available we suggest you ask the following questions to yourself:
• How do you want to use the camera?
• What kind of pictures do you want to take?
• How often would you use it?
• Would you like to print the pictures or use digital copy only?
• What are the features you are looking for?
• Do you want integrated video recording in your camera?
• What is your budget?
Generally, when people buy a digital camera for personal use, it is to preserve those special moments in their life. So, if you are thinking of buying a new camera, make sure you are aware of how would you use it. For example, do you want to take pictures of your kids playing in the park or do you want to take it with you on holiday. You also have to take into account how often you are likely to use the camera. There's no need to spend a small fortune on an item that you will only use one or two times a year.
Broadly, digital cameras can be identified as:
• Pocket size camera: These are very easy to use and can be carried along without any hassle. Therefore these can be used for various occasions.
• Point and shoot: These types of cameras are relative cheap compared to other types of cameras, such as DSLRs. Point and shoot cameras are ideal for web viewing as they come with only 5 megapixel resolutions.
• High performance: These are the digital cameras or SLR which are suitable for professional photographers. They typically come with more than 10 megapixel resolutions as standard, as well as a combination of additional features which allow you add various accessories.
There are various technical features also to be considered before selecting a camera:
• Memory card: Depending on how often you will be using the item, you should choose a memory card big enough to meet your demands.
• Resolution: A camera with higher resolution would enable you to take more high quality pictures and also print better copies. However, if you intend your photos to be uploaded to Flickr or Facebook, then a camera with a low resolution will suffice.
• LCD Screen: Nowadays, you can view your pictures on the LCD screen as you take them. So, a wider LCD offers better viewing, but is more expensive when compared to a camera with smaller LCD.
• Battery Life: Digital cameras mostly use either lithium rechargeable batteries or AA disposable batteries. Lithium rechargeable batteries offer longer battery life, but are much heavier.
Other addition features to consider are manual settings, continuous shooting, optical zoom, just to name a few. So, if you are planning to buy a new digital camera to capture those special moments, make sure you look at John Lewis's online store. Here you will find a wide selection of cameras and camcorders from leading brands to fit every budget without compromising on style or quality.
Find a range of range of consumer electronics including; [http://www.johnlewis.com/Electricals/Photography+and+Camcorders/Photography+and+Camcorders/All+Cameras/4002/ProductCategory.aspx]digital cameras, TVs and [http://www.johnlewis.com/Electricals/Laptops+and+Netbooks/Laptops+and+Netbooks/Netbooks/8878/ProductCategory.aspx]Netbooks from leading brand names.
Customers can visit the John Lewis website for more information.
Article Source: [http://EzineArticles.com/?Digital-Camera-Buying-Guide&id=4115589] Digital Camera Buying Guide
Related Links:
http://astore.amazon.com/Panasonic-DMC-FX75-20
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http://astore.amazon.co.uk/Olympus-SP600UZ-21
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• How do you want to use the camera?
• What kind of pictures do you want to take?
• How often would you use it?
• Would you like to print the pictures or use digital copy only?
• What are the features you are looking for?
• Do you want integrated video recording in your camera?
• What is your budget?
Generally, when people buy a digital camera for personal use, it is to preserve those special moments in their life. So, if you are thinking of buying a new camera, make sure you are aware of how would you use it. For example, do you want to take pictures of your kids playing in the park or do you want to take it with you on holiday. You also have to take into account how often you are likely to use the camera. There's no need to spend a small fortune on an item that you will only use one or two times a year.
Broadly, digital cameras can be identified as:
• Pocket size camera: These are very easy to use and can be carried along without any hassle. Therefore these can be used for various occasions.
• Point and shoot: These types of cameras are relative cheap compared to other types of cameras, such as DSLRs. Point and shoot cameras are ideal for web viewing as they come with only 5 megapixel resolutions.
• High performance: These are the digital cameras or SLR which are suitable for professional photographers. They typically come with more than 10 megapixel resolutions as standard, as well as a combination of additional features which allow you add various accessories.
There are various technical features also to be considered before selecting a camera:
• Memory card: Depending on how often you will be using the item, you should choose a memory card big enough to meet your demands.
• Resolution: A camera with higher resolution would enable you to take more high quality pictures and also print better copies. However, if you intend your photos to be uploaded to Flickr or Facebook, then a camera with a low resolution will suffice.
• LCD Screen: Nowadays, you can view your pictures on the LCD screen as you take them. So, a wider LCD offers better viewing, but is more expensive when compared to a camera with smaller LCD.
• Battery Life: Digital cameras mostly use either lithium rechargeable batteries or AA disposable batteries. Lithium rechargeable batteries offer longer battery life, but are much heavier.
Other addition features to consider are manual settings, continuous shooting, optical zoom, just to name a few. So, if you are planning to buy a new digital camera to capture those special moments, make sure you look at John Lewis's online store. Here you will find a wide selection of cameras and camcorders from leading brands to fit every budget without compromising on style or quality.
Find a range of range of consumer electronics including; [http://www.johnlewis.com/Electricals/Photography+and+Camcorders/Photography+and+Camcorders/All+Cameras/4002/ProductCategory.aspx]digital cameras, TVs and [http://www.johnlewis.com/Electricals/Laptops+and+Netbooks/Laptops+and+Netbooks/Netbooks/8878/ProductCategory.aspx]Netbooks from leading brand names.
Customers can visit the John Lewis website for more information.
Article Source: [http://EzineArticles.com/?Digital-Camera-Buying-Guide&id=4115589] Digital Camera Buying Guide
Related Links:
http://astore.amazon.com/Panasonic-DMC-FX75-20
http://astore.amazon.com/Canon.SD4000-IS-20
http://astore.amazon.co.uk/Canon-300HS-21
http://astore.amazon.co.uk/Olympus-SP600UZ-21
http://astore.amazon.co.uk/Olympus-SP800UZ-21
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