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Sony Ericsson K810i: Superb Camera Phone

Forget your stand alone digital camera – Sony Ericsson introduces a slim and smart Cyber shot camera for your perfect photographic experience. Cyber shot is a new mobile technology for camera phones and ensures perfect picture quality. Whether you are a professional photographer or a newbie, the Sony Ericsson K810i is a perfect tool for taking still pictures as well as videos. Capture some special moments and share with friends via emails, or MMS.

Of late, consumers are preferring more camera phones in the global mobile phone market. That's the reason why stand alone digital camera market are suffering a lot. Mobile companies have incorporated most of the advanced features in their portable mobile devices and camera is one of the main features that are very much in demand. Sony Ericsson has introduced the high end Cyber shot camera in its K series portfolio and are getting huge popularity in the global market.

The Sony Ericsson k810i is a slim and smart phone. Featuring a 3.2 MP camera, auto-focus with Xenon flash, it ensures excellent picture quality. Sharing of pictures can also be done via online blogging. Additionally, this powerful camera phone comes with other fun features such as a personal music player, ringtones and mobile games – play songs, personalize ringtones or enjoy playing mobile games on the move. Supported with Memory Stick Micro – it creates enough rooms to accommodate multimedia and other data files.

The Sony Ericsson k810i is a 3G phone and offers seamless connectivity options such as Bluetooth, EDGE and GPRS – surf the Web, synchronise emails or keep you updated with latest news. Sharing of data with other compatible devices is also easy via USB and Bluetooth wireless connectivity. The handset also features a large 2” QVGA TFT screen for watching videos and pictures. For those who love photography, the Sony Ericsson K810i is a perfect choice.

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Sony Ericsson k810i
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How does a camera's auto-focus work?

How does the camera know to focus on subject A when there are sorts of objects in its field of vision?

What is Autofocus?
Autofocus (AF) really could be called power-focus, as it often uses a computer to run a miniature motor that focuses the lens for you. Focusing is the moving of the lens in and out until the sharpest possible image of the subject is projected onto the film. Depending on the distance of the subject from the camera, the lens has to be a certain distance from the film to form a clear image.
In most modern cameras, autofocus is one of a suite of automatic features that work together to make picture-taking as easy as possible. These features include:
Automatic film advance
Automatic flash
Automatic exposure

There are two types of autofocus systems: active and passive. Some cameras may have a combination of both types, depending on the price of the camera. In general, less expensive point-and-shoot cameras use an active system, while more expensive SLR (single-lens reflex) cameras with interchangeable lenses use the passive system.

For more info...

I. Active Autofocus
In 1986, the Polaroid Corporation used a form of sound navigation ranging (SONAR), like a submarine uses underwater, to bounce a sound wave off the subject. The Polaroid camera used an ultra-high-frequency sound emitter and then listened for the echo (see How Radar Works for details). The Polaroid Spectra and later SX-70 models computed the amount of time it took for the reflected ultrasonic sound wave to reach the camera and then adjusted the lens position accordingly. This use of sound has its limitations -- for example, if you try taking a picture from inside a tour bus with the windows closed, the sound waves will bounce off of the window instead of the subject and so focus the lens incorrectly.
This Polaroid system is a classic active system. It is called "active" because the camera emits something (in this case, sound waves) in order to detect the distance of the subject from the camera.

Active autofocus on today's cameras uses an infrared signal instead of sound waves, and is great for subjects within 20 feet (6 m) or so of the camera. Infrared systems use a variety of techniques to judge the distance. Typical systems might use: 1. Triangulation 2. Time
3. Amount of infrared light reflected from the subject

http://electronics.howstuffworks.com/autofocus2.htm

II. Passive Autofocus
Passive autofocus, commonly found on single-lens reflex (SLR) autofocus cameras, determines the distance to the subject by computer analysis of the image itself. The camera actually looks at the scene and drives the lens back and forth searching for the best focus.
A typical autofocus sensor is a charge-coupled device (CCD) that provides input to algorithms that compute the contrast of the actual picture elements. The CCD is typically a single strip of 100 or 200 pixels. Light from the scene hits this strip and the microprocessor looks at the values from each pixel.
http://electronics.howstuffworks.com/autofocus3.htm

BenQ DC T1260 12MP touchscreen camera with high contrast processing spotted
BenQ have outed their latest digital camera, the point-and-shoot DC T1260 , and as well as offering a 12-megapixel CCD, wide-angle 4x optical zoom and the company’s HDR image enhancement technology – which combines multiple frames to work around high contrast images having reduced visibility – there’s also a touchscreen for easier control. The T1260 follows hot on the heels of the DC E1260 ...

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