When buying a digital camera there are some important features to consider and understanding these features will enable the consumer to buy the right camera that suits their needs and provide the education necessary to make an informed choice.

Important Features of a Digital Camera

Megapixels and Resolution - Basically the more megapixels the camera has the better and sharper the resolution of the images. If you intend to only email pictures or view them on your computer then any resolution is fine.

But, with a higher resolution you have the flexibility to print better quality pictures as well as print them in larger sizes with better resolution and perform other editing functions such as cropping and printing. Most cameras offer a resolution of at least 5 megapixels, which is enough to make a sharp 11-by-14 print.

Camera Size, Weight, and Design - Some cameras weigh as little as 4.2 ounces and while the pocket size camera may be convient there are some there are some important considerations when deciding on the size of the camera you purchase. First, the smaller the camera the tinier the dial and buttons that makes changing settings a hassle and so it affects user friendliness when taking pictures. Second, many smaller digital cameras do not have any manual settings.

LCD and Viewfinder - All digital cameras have an LCD screen; they vary in size from 1.8 to 3.5 inches. The smaller size limits your ability to review just-taken images on the camera. A good LCD is essential for knowing whether you got the shot you wanted, and can usually give you an indication of whether it was properly exposed.

Zoom Lens - This is a very important feature to consider.

Optical Zoom - The best option is to buy a digital camera with Optical Zoom. The optical zoom feature actually utilizes the movement of the lens. Optical zoom ratings range from 3X to 20X and the higher optical zoom ratings give much better image quality.

Optical zoom gives you all the benefits of the camera’s maximum resolution, combined with the ability to focus in tight on faraway shots and scenes. An optical zoom is more important than resolution because it means you won’t have to magnify your subject and then use software to crop the image and discard some of the resolution as a result.

Digital Zoom - The Digital Zoom lens only captures pixels and magnifies those and so it produces inferior photos, always go with Optical Zoom.

Tip: Ignore digital zoom in the Optical Zoom rating. While most digital cameras offer at least a 3X optical zoom and up to 20X, some vendors tout a high total zoom that includes digital zoom, and is not the true Optical Zoom rating.

Image Stabilization - Image stabilization is important because without it you need a steady hand or a tripod to avoid blurry pictures at extreme telephoto lengths. More advanced digital cameras, tend to employ one of two image stabilization methods. Optical image stabilization, in which an element in the lens adjusts to compensate for movement and sensor movement, in which the camera’s sensor moves in order to compensate for the shaking.

Manual Focus vs. Point and Shoot Capability - Manual focus setting capability is important for getting certain shots. Often times this allows for adjusting the digital camera’s settings to fit specific shooting situations and gives a lot more control and usability for the picture taker. The lower-end cameras do not offer manual focusing but instead offer a point and shoot capability or allow only stepped focusing, which forces you to choose from a few preset distances.

Exposure settings

Automatic Mode - All digital cameras let you shoot in fully automatic mode–just press the shutter release and you get a picture.

Aperture and Shutter Priority Modes - Adjusts the size of the lens opening or how long the shutter stays open, and the digital camera automatically controls the other variables to give you the proper exposure.

Facial recognition is a great feature offered by many point-and-shoot cameras and actually detects people’s faces and adjusts the shutter for optimal images.

Memory/Storage - All digital cameras come with a “starter” memory card, usually that is 16MB in size. The starter memory card for a typical 5 megapixel digital camera set to its highest resolution can store six to eight pictures. The memory card feature is not so important because you can and will want to buy another one in order to have the optimal storage capability and convenience of not having to transfer the few pictures taken to make room for more. Several models and sizes of memory cards are available for purchase.

Batteries - Digital cameras batteries vary. Some cameras use AA’s, either non-rechargeable or rechargeable, nickel metal hydride, high-capacity disposable CRV3s or proprietary rechargeable batteries.

Tip: Since digital cameras use a lot of battery juice disposable batteries can cost big in the long run. Using rechargeable batteries can save a lot of money. Many cameras allow the use of both so in the event the rechargeable is charging you can pop in some AA’s.

User Friendly Controls and Menus - Consider the accessibility of buttons and menu options while holding the camera and taking pictures. Too many buttons or menu functions just confuses and can make it a hassle to use the camera and so affects the digital camera’s user friendliness.

The advent of Blu Ray is certainly upon us, it is slowly creeping into people’s collections as the high definition video format of choice. Advocates are quick to assert that this new format is not only a better way to watch movies, but a way for collectors to protect their collections from future development; the term being bandied about is ‘future proofing’. But how does the Blu Ray format work? What makes it different from regular DVD?

Blu Ray has been developed with the cooperation of some of the world’s most recognisable technology companies, for instance, Sony, Samsung and Sharp have all been instrumental in this development and all three are likely to push the widespread use of Blu Ray in the future. The disc is physically different to regular DVDs in a number of ways. The reading formulation of the device is unique, using a blue-violet reading system that gives the format its name.

The result of this system is a shorter reading frequency and for the sake of not getting too technical, means that the shorter the wavelength, the greater the capacity of the disc. Whether the Blu Ray disc is single or double layered relates to a storage capacity of around twenty five and fifty gigabytes respectively.

The launch of Blu Ray occurred in 2006 and marked a watershed in the design and development of high definition viewing. Its ingress into the market has been slow at first but this situation is rapidly improving. In the early stages their was a considerable battle between the Blu Ray and HD DVD formats that resembled the eighties battles between Beta Max and VHS.

Blu Ray eventually won this battle due to a wide variety of backers such as movie studious and retailers. These movie studios include giants such as Warner Brothers, Disney and Buena Vista whilst the retailers that jumped aboard consisted of internet marketplaces such as Amazon. With such a large backing it was almost inevitable the Blu Ray would win out, although the competition from Toshiba’s HD DVD was considerable at times.

Since the end of this ‘format war’ Blu Ray has made serious advances in terms of sales. A recent release, Twentieth Century Fox’s Hitman actually experienced a record fourteen percent of sales in the Blu Ray format. While this is still a relatively small number in terms of total percentage, it shows that as the number of players in the marketplace increases, the exposure of this format will also become more widespread.

Critics are quick to espouse that the advancement of BD is limited due to price; the research however tells a different story, one report has stated that while the ingresses into the entertainment market are slow, if compared to DVD in its early years Blu Ray is actually doing better and experiencing a greater level of exposure.

What does the future hold for Blu Ray however? Clearly those involved in its production will be hoping for yet more exposure into the entertainment medium although technologically it is expected that while single and duel layered discs are now on the market; the coming years are likely to bring a quad layered disc holding one hundred gigabytes of data. Even so, development is ongoing, with some companies striving to produce a sextuple layered disc capable of holding almost two hundred gigabytes. In addition the future is likely to bring recordable discs for the recording of HD television programmes and schedules.

With such a strong corporate backing it is unsurprising that Blu Ray has succeeded in winning the format war. Movie buffs now regard BD to be the best and most preferable viewing format whilst also considering it a great way to future proof a collection. Whatever the critics say the development of Blu Ray technology is certain to continue.

I have been saving for almost a year now to buy a LCD TV along with a home theatre system. My idea of relaxing and de-stressing is watching a good movie. Nothing can be better than watching a movie of your choice comfortably at home on your favorite couch.

A year back when I really wanted to buy a LCD TV the price was well beyond my budget and a luxury for someone who had just started working. But in a last couple of months when my hunt for a good bargain with a renowned brand name and affordable price started again, I realized that the prices seem to have come down considerably. With reduced prices LCD TV has been giving tough competition to plasma TV and has even overtaken them in many international markets.

The LCD stands for liquid crystal display. There are liquid crystals pressed between two glasses, which is electrically charged to form an image. The plasma TV picture may be slightly better than LCD because they can render black better than LCD therefore, providing good contrast.

Though minute details are better seen on LCD because of more pixels on the screen, they were available only in smaller sizes earlier giving plasma TV an edge over them. They are now available in all sizes, even in sizes bigger than forty inches and are as good or better than plasma TV performance wise.

LCD`s are used as computer monitors extensively. They are not only flat and light weight but also consume up to thirty percent less energy. Another interesting factor that caught my attention was 60,000 hours stuck on the LCD`s. This is the number of hours that the LCD can be viewed with optimum picture quality. A slight negative is that LCD TV is not very clearly visible from acute angles.

Since more and more individuals are getting hooked to television and computer monitors are becoming a necessity for individuals all over the world the manufacturers are investing billions of dollars in research. The leading brands in this category are Samsung, Phillips, Sony, LG and Sharp. By 2011 the production of number of LCD TV is expected to go up to sixty one million from about twelve million in 2006. The LCD TV market is expected to be worth 25 million dollars by 2011.

Some leading manufacturers even employ the Original Design Manufacturers (ODM`s) and Electronic Manufacturing Services Providers(EMS), to meet the growing demand. The competition between the brands on the size, quality of the picture and cost has benefited the consumer the most.

Apart from the prices there are a whole lot of features to be compared between the leading brands. I have technically become very aware of the features of the LCD TV after my research on them for a few weeks now. I just wanted this buy of mine to be perfect. For me watching television is not just about moving images but about an experience that has to be perfect.

After a whole lot of research in electronic malls and on internet I finally bought LCD TV that is a best buy for me, well within my budget. I placed my prized possession just beside my home theater converting one small room into a mini comfortable theater.

There are bean bags thrown around with a carpet and an air conditioner. Now, my friends cannot really resist my cozy room and invite themselves over almost every weekend. Many land up with the movie of their choice that sometimes is very annoying to me.

There are some friends who stay back at night after late night show and some who come in with food. Although, I love to spend time with them my effort now is to convince them to have their own LCD TV so that I can get my new LCD TV all to myself. Some seem to be convinced while others are happy to treat my LCD TV as theirs.

If your fingers itch for a touch screen even during the morning commute, there may be a solution — particularly when you’re carpooling in the passenger seat and have a minute to play. Vehicles are now being released with “carputers” or “carPCs” as an option, not just as a retrofit. A familiar type of “carPC” to most folks is a Global Positioning System (GPS). According to an online encyclopedia, a GPS device is much like a limited laptop running GPS software.

Basic Specs and Tech:

“Carputer” machines consist of a motherboard, processor and memory and data storage method, such as a hard drive or solid state flash memory. Interface hardware depends on non-distracting options to interact with the “carPC,” such as wireless protocols, which are commonly used to connect to GPS devices and mobile phones. Wirelessly connecting and transferring data to and from home computers is also possible.

A well-executed interface is paramount to the machine’s success, and its software runs the computer’s hardware. Good programming allows drivers to use their favorite piece of technology without being distracted. Common operating systems are available and nearly all are customizable.

Making sure “carPCs” keep their juices flowing is a slightly more complicated matter than it is for the average desktop or laptop. The danger lies in the sudden power drain to certain systems that occurs upon start-up or, of course, when the ignition is cut. To suddenly seize a computer’s supply, however, is risky; software can malfunction and data can be lost. To safeguard against this, a DC-DC power supply is often used, which provides a continuous, 12V power stream to the “carputer.” A DC-AC inverter can also be installed, but it tends to use more energy and produce more wasted heat. The right hardware and software combination allows the computer to sense when the main power source has been cut and use what’s left to safely shut down the machine.

Experiments have found that Internet users experience marked levels of frustration when a Web site takes thirty or more seconds to load. Bearing this in mind, imagine how quickly “carputer” popularity would decline without the relay circuits enabling the machine’s devices to start automatically. Without properly relaying circuits, devices such as amplifiers and screens would have to be started manually — something a portion of the general public doesn’t even know how to do anymore.

Before 2000, LCD character displays were the screen of choice for “carPC” builders. Commands were usually sent to the machine through a keyboard with this system. Soon, wireless serial port remotes were made possible, and small television screens became affordable. The majority of first screens were video input only. For over a grand a pop, though, these were hard to justify. Rapidly advancing technology and production increases have recently made touch screens available and affordable.

Lest one thinks these little “carputers” are all business, entertainment features have been added. “CarPCs” now bring nearly all the entertainment comforts of home onto that cross-country trek. Passengers feel like watching a movie? No problem. Playing a video game? Hook ‘er up. Download favorite music, tune in to satellite radio and map the next trip to Europe on advanced GPS software. It’s all there. No more “Maaa-om. Are we there yet?” “Pop in a movie,” says Maaa-om. Or, “do your homework,” which she downloaded from a desktop at home. At last — technology not only brings hope for peace and quiet but also a way to make sure no one gets too lost along the way.

The possibilities are nearly endless. After all, automobiles have already been introduced to the world of high technology. Consider infrared cameras, a variety of hands-free applications, cargo detectors, lane departure and side (blind spot) warning software — these technological offerings are all not only possible but are already being incorporated. Imagine the capabilities modern computers possess. Now imagine that in your car.

The MP3 or digital audio player has been with us for some time and can now be considered the most convenient and portable method of carrying music around with us. Before the development of the MP3 file format and subsequently a player for this format the most common form of digital music device was the personal CD player, however this had serious limitations, particularly in terms of size where it was restricted to the proportions of the CD.

Attempts were made to introduce a smaller device, taking the form of the Mini Disc player although its use was limited and it did not become as popular as the CD. Today, there is an MP3 player in nearly every home in the modern world; in addition they have been incorporated into mobile phones for ultimate convenience. But what is the history of this little device?

The first digital audio player or DAP was produced as recently as 1997 by a company named Sae Han Information Systems, it was marketed as the MPMan by this South Korean company throughout 1998. It utilised a flash based memory but could only hold a paltry sixteen megabytes of data. The size restrictions of this inaugural device led to the development of a player with a hard drive. Compaq conducted the initial foray and with the cooperation of HanGo Electronics released the PJB-100 (Personal Jukebox), a device that could hold almost 4.8 GB of date, equating to over a thousand songs.

It was from this point onwards that a device was released that would not only revolutionise the design of MP3 players but design in other fields. This was the first generation of Apple’s iPod. In the beginning it was the Macintosh fraternity who used the device but thanks to a simplistic interface and minimalistic styling it soon gained acclaim and grew in popularity. The second generation iPod was a revelation and was now compatible with Microsoft PCs and hence users now had more freedom to transfer their MP3 tracks. Many other manufacturers also got into the act and released players that were similar in function, if not in form to the iPod.

Fundamentally there are two main types of MP3 players on the market today, these are flash and hard-drive based. Flash players have no mechanical parts an instead hold the musical information on a flash memory that is either built into the device or is on a memory card. While in the early years of DAPs flash devices were seen as the more restricted of the two variants, modem technological advancements however have meant that flash players can hold up to around 32 GB. The benefits of flash MP3 players is that they have no moving parts and are hence less susceptible to failure as well as using less power.

Hard drive MP3 players differ from flash variants in the way that they have a mechanical drive that stores the data. The HDD is read by the device to access the music and because the data is stored mechanically they are able to hold larger amounts of data. In some cases hard drive players can hold as much as 250 GB of data; the benefit is that the user is able to carry their entire music collection wherever they go with ease.

Today the MP3 player is one of the most noticeable forms of technology that we see everyday. On the streets, on the plane, train or bus there is almost guaranteed to be someone listening to a DAP, by reducing the size of the personal music player through advances in data retention technology it has been possible to bring portable music to the masses.