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Technology products: Smallest camcorders every day

The new digital video cameras have better technical conditions in ever smaller dimensions

The cameras are the best tool to freeze part of our lives at a price and shrinking size. This is the reason that in recent years digital cameras in these devices have found their perfect travel companion, family events and labor issues. Slightly larger than a compact camera, the current video cameras, light and portable, have been popularized and perfected to achieve a higher resolution, thanks to which you can capture images to be viewed in great detail in flat TVs last generation. They are not the only virtues that characterize the new generation of video for users. The price is another of its advantages, because video cameras are available from 250 euros and a maximum at around 1,500 euros. The extent disbursement conditioned, among other features, the quality of the recorded image and the storage system.

Criteria that prevail in the choice of a camcorder

An average user, who wants quality recordings but aspire to artistic or professional results, must seek a balance between functionality and performance. Functionality at the time of recording the images and also when you want to edit. With regard to benefits, should be distinguished from what is necessary. This may ponder whether or not it is worth paying a higher price.

Optical system

Regarding the optical side, one of the most important aspects is the type that uses the camera zoom. There are two sets of price and quality very different: the optical zoom digital. Like digital cameras, optical zoom is based on a physical set of lenses. It is the best alternative, but it is also the most expensive. The digital zoom is an electronic system whose results are lower and, whenever possible and the budget allows, should be rejected.

Another factor is the sensor. System is responsible for capturing the image and transform it into digital. It has two sensor technologies in the market, the CCD and CMOS. Both provide similar image quality, so you are not a factor. The CCD, however, contains a system called 3 CCD captures the image with greater sensitivity.

However, the most important thing is not how the image is captured, but the quality of the final result. In other words, the definition offered by the camcorder. Currently the cheapest models provide a quality 720p, also called HD Ready, which allows the image display with a definition of 1280 x 720 pixels. Prices are available for around 400 euros. If you want Full HD quality, which implies a higher definition image (1920 x 1080 pixels), the price is higher.
Physical parameters

But not only the optical section is for the functioning and results of a digital camcorder. Once you capture the image, the way they are stored in the camcorder is comfortable determine whether or not handling, play it on another device or edit with a computer program. For a long time were very popular video tapes, and today there are still cameras that use them. However, a situation that is conducive to viewing the recording in a computer, which requires special adapters. Others use a DVD, but it is not easy to draw the image.

The most practical are the chambers that contain a hard drive, or those that use SD memory cards as simply insert a USB cable between camera and computer to transfer the recording, or SD card is inserted into the card slot on the PC. Its memory capacity is generally high, with an image record takes up much space.

The bigger the hard disk capacity, more hours of recordings can be stored, although this option entails disadvantages. The first is that a hard drive with high capacity means more weight and a larger camcorder, which has a negative influence on the portability of the camera. The market offers models with large capacity hard disks and little weight, but generally correspond to the more expensive equipment. The SD card option does not determine the weight and dimensions of the device, but its memory limit is 32 gigabytes. If you want more capacity, the only option is to carry spare cards.

Once you have managed to download the recording to hard disk, you can proceed to its release, but first we must ensure that the compression format that uses the camera to record the image is compatible with media players that are used on the computer. The most common compression formats, and recognize both players and editing software are Theora, DivX, MPEG-2, MPEG-4, WMV or FLV. If the camera records in a different format, can be found on the Internet the appropriate codes to read this format and converted to other accepted by the editing program. However, this practice can result in lower quality image.

Finally, make sure the type of connections supported by the camcorder, which they depend that it can connect directly to both a computer and a television screen or other device. You must have at least one USB port and connectors Super Video or composite video. If you record in HD is imperative that contains an HDMI connector and video out port that allows connection to an HDTV.

Televisions with 3D support

In 2010 the market will the first television models capable of displaying movies and video games in three dimensions. In less than ten years, the television industry has evolved to a worthy of a science fiction story. Of the devices and cathode ray tube has been passed to 42-inch screens, flat and can hang on the wall. Now it's the turn of new devices capable of displaying images in three dimensions without the need for special glasses. The major manufacturers already have some models ready to display 1080 pixels (Full HD) with the bracket.

In the last IFA technology fair held in Berlin, future products were to be released to the market of consumer electronics. In this event, several major TV makers like Samsung, JVC and LG unveiled its first prototypes of screens in three dimensions (3D), which is not marketed for three years. Panasonic and Sony have said that next year will go on selling TVs that will support 3D images using different technologies

However, other brands do not expect much: Panasonic and Sony have said that during 2010 models will go on sale that will support 3D images using different technologies, as each firm has developed its own system. Panasonic has opted for plasma TVs with an image refresh rate of 100 Hertz (every hundredth of a second), while Sony has designed several prototypes of technology-based LCD screen with a frequency 200 hertz (200 updates per second) .

These televisions will coincide with new Blu-Ray 3D readers, able to play movies in this format, which has not yet been established due to the limited choice of titles and high price. Panasonic's proposal is a Blu-Ray 3D FullHD (video), with many opportunities to become a standard adopted by the content industry, since the negotiations between the company and the audiovisual sector is well advanced.

New technology, new connection cables

Support for video in three dimensions involve many external devices and connecting cables have to be replaced by other models compatible with this new technology. Currently, we develop a specification of the HDMI connectors to support high-definition three-dimensional graphics formats. We develop a specification of the HDMI connectors to support high-definition three-dimensional graphics formats

For now, the content can be displayed on these TVs will be movies and video games, although there have been some experiences with other emissions. Last May, France and the operator Orange TV broadcast in this technology tennis final at Roland Garros. To do this, they used special cameras with a double lens that simulates human vision.

Regarding video games, Sony has stated that the PlayStation 3 is compatible with 3D technology as it can convert an image into two to create three-dimensional effect. This technology support will be based on an updated firmware (the software involved in the mode of operation of the hardware) device, but will not be compatible with all games and is not confirmed if all the PS3 versions released to since 2006 will be compatible with this update.

Creating a three dimensional image

The basis of the technique makes it possible to display images in stereoscopic 3D and is called to create the illusion of depth in them. Shows a different view for each eye, which being united by the brain to recreate the image as a three-dimensional visual information. This technique copies the way humans are, when viewed as a distant object, each eye gets a vision of it from a different angle, the brain gathers information from the eye and connects organs in a single image .

When one looks at a distant object, each eye gets a vision of it from a different angle and the brain collects information. To date, to view a movie in three dimensions is necessary to use special glasses that create this optical illusion. TV manufacturers are working on prototypes of 3D screens to prevent their use. The first models were equipped with a 3D glasses blue and one red lens. These lenses in each eye filtered part of the image, to show two different spectra to the brain. Now using polarizing filters (a horizontally polarized lens and one vertical) that show a number of colors higher than that of the old glasses.
Vision problems

Because of the way in which these images, a minority of the population can not process this technology. It is for people with vision problems such as lazy eye (amblyopia), strabismus or vision in one eye. And sometimes, three-dimensional images can cause headache and dizziness. Likewise, people who wear glasses may feel a great discomfort to put up polarized models or are unable to use both at once.

The TV film in 3D: movies at home

2009 will be remembered as the year in which the film back to 3D movies after several attempts in past decades. These first digital three-dimensional experiences are interpreted as a way to regain the levels of attendance of spectators at movie theaters. However, although 3D films enrich the viewing experience, the price of tickets is urged between two and three euros per seat.

Nevertheless, the premiere of animated films as "Monsters vs. Aliens" and "Up", has led to the kick-off of technology that requires a special type of rooms equipped to handle the new format, another handicap in the face a hypothetical success. Perhaps because of the difficult environment, posed by large-format films in 3D, the industry has chosen to enter the domestic rooms, in line with current consumption habits.