BenQ Company has introduced lots of models in digital cameras. This camera is one among them with lots of features that the new world would expect. The camera is BenQ DC C800 Digital Camera. This is a CCD camera, with 8 mega pixels. The optical zoom that this camera has got is 3x optical zoom. The camera type is standard point and shoot type camera. Though, the optical zoom is 3x, the digital zoom ranges to 4x. The focus type is auto focus. This will focus the object that you are to shoot up. Recording video in this camera is quite an interesting matter.

The video speed of this BenQ DC C800 Digital Camera to record is 30 frames per second. The video format is MPEG-4. The exposure control feature has got lots of modes. The aperture range is f5.1 (w) - f2.8 (w). The shutter speed ranges from 8 - 1/2000 sec. The white balance in this camera can be used switch to auto, manual, Daylight / Sunny (Preset), Cloudy (Preset), Fluorescent (Preset) and Incandescent (Preset). In the side of storage, the memory card type that this can access with is SD card. The in built memory size is 32 MB.

The flash is made integrated, that is an in built type. The flash functions can be regulated, it can be switched off, and auto flash can be used. Fill in flash and slow sync can also be used if in need. This has no viewfinder instead the LCD display in this unit serves as the view finder to have a clear idea of what is to be taken. The size of the LCD panel is 2.4 inch. The interface type used in this camera is USB 2.0. Video interface, video out is the interface of this unit. In the case of power supply, 2 batteries are to be employed. The battery type is AA batteries.

The included features of this BenQ Digital Camera are self timer of 2 sec and 10 sec. A built in speaker is made assembled in this camera in order to listen to the voices of recorded videos. The dimensions of this unit are 6 x 8.9 x 3.3 cm with 0.14 kg as weight.

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Panasonic is a well leading company in the UK introduces their Panasonic Lumix DMC-FX30EB-S Digital Camera with easy to use construction. With its slim and compact design, it attracts the users. You can enjoy every shots of image you capture with this digital camera.

• The camera has effective pixels of 7.2 mega-pixels for clear image.
• It is supported with the SD Memory Card.
• The image sensor of the camera is 1/ 2.5 inches which has come with CCD (couple charged Device) sensor with primary colour filter.
• The focal distance of the product is 4.6-16.4mm per frame.
• The white balancing of the product has various modes such as auto, daylight, cloudy, shade, halogen, white set etc. This white balance is adjustable as per the requirement of light needed by the camera.
• The aperture of the lens system has openings of 2.8 to 8.0 per frames.
• Panasonic Lumix DMCFX30EBS Digital Camera has self timer of 2 second to 10 second, and auto review for 1 or 3 second with zoom.
• It has picture adjustment feature to adjust the image as your desire.
• Take still images using JPEG format and even images with audio using DPOF format.
• You can record images with the ratio of 4: 3 which gives standard and quality fine image.
• The burst shooting mode is available with the product which has different options to capture images.
• Users can use amazing unlimited consecutive shooting option to take continuous snaps.
• It is simple to record still images with audio for a maximum of 5 seconds.
• Panasonic Lumix DMCFX30EBS Digital Camera can record audio dubbing for maximum 10 seconds.
• Make use of a unique advantage of "real-time histogram" feature.
• Users can utilise distinct memory support through Built-in Memory, SD Memory Card, SDHC Memory Card and Multi-Media - Card to record various storage.
• Panasonic Lumix DMCFX30EBS Digital Camera has speaker and microphone. Users can use different connectivity features like:
• DC Input Interface
• Video Output
• USB.
• The camera can print the image directly with using Pict-Bridge feature.
• The product is powered with the supply of Lithium Battery.
• The product has come with following accessories such as battery charger, battery carrying case AC cable, and USB connection cable AC cable, strap and CD-ROM.
• The device will help you to capture pictures up to 280.
• Users can set digital zoom up to 4x.
• This useful unit has equipped with the focus distance from 4.6 to 16.4 millimetres.

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LCD technology

It was in the closing decades of the 20th century that the large screen television technologies began to develop and with the progress of time and the introduction of new technological innovations, one could see the emergence of flat screen televisions. There were several different technological tools which were used in the formation of these flat screen devices, the foremost among them being the LCD technology. Primitive technologies like the CRT or the use of cathode ray tubes moved into oblivion as the flat screen techniques took centre stage and at present is the prevalent form used in the manufacture of television sets. The LCD or the liquid crystal technique is dependent on the pixels on the LCD which are again comprised of certain constituent factors. These include two glass plates with molecules, two polarizing filters and the liquid crystal molecules.

There are also different kinds of LCD display technologies which play a major role in the flat screen technologies. These include the Multi-Domain Vertical Alignment or MVA and it is preferred at times because of its swifter response times and higher contrast ratios compared to many of the other techniques. However its reduced brightness is a setback. Another technique is the Twisted Nematic or TN which is among the commonest forms used for flat screen techniques. The other procedures include In-Plane Switching or IPS and Patterned Vertical Alignment or PVA. The use of these LCD techniques in the manufacture of flat screens are beneficial for several reasons like firstly it is space saving and also looks smarter and stylish and are slimmer versions. Moreover they do not suffer from burn-ins like the bulky television sets of earlier times.

However it must be pointed out that the presence of small film transistors in case of LCDs often lead to the formation of defective pixels thus affecting visibility and blurring or distortion of images. Sony, Samsung, Panasonic, LG, Toshiba, Akai are premier manufacturers of flat screens.

DSLR cameras

DSLR cameras also referred to as digital SLR cameras or digital single lens reflex cameras are different from the digital live preview cameras to an extent and they function with the help of a regular mirror system which is automatic and a significant feature called pentaprism which allows the light rays to be directed from the lens via the viewfinder. The functioning of the digital SLR cameras is dependent on several factors. In case of taking a photograph, at first the light rays are reflected by the mirror though the attached lens at a more or less ninety degree angle. At this juncture the pentaprism enables the light to penetrate into the eyes of the photographer. The final moment when the photograph is actually taken, the mirror takes an upswing thus enabling the lens to throw light into the image sensor. In case of the common digital cameras, the image sensors are constantly exposed to the light rays’ reflected by the lenses and therefore the screen itself becomes the electronic viewfinder. However, on the contrary the presence of the mirror in digital SLR cameras enables them to view the image in an LCD screen before finally taking the photograph. But nowadays it is found that a growing number of digital SLR cameras have also incorporated the live preview function as a result of which the LCD display is similarly used as viewfinder.

The digital SLR cameras are characterized by swift focusing properties and this is enabled by the phase detection autofocus system. Though several digital SLRs are using live preview properties, most of these possess the optical viewfinder and this is often more skilful in functioning as it unlike the electronic viewfinders they usually display the image as it is going appear as the final photograph as the light rays here are emitted from the lens itself. Some of the present manufacturers of digital SLRs include SLRs include Sony, Canon, Fujifilm, Panasonic, Olympus and Nikon