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Friday, May 30, 2008

Digital Cameras

Digital Cameras A digital camera is a camera that takes video or still photographs, or both, digitally by recording images on a light-sensitive sensor.


Many compact digital still cameras can record sound and moving video as well as still photographs. In the Western market, digital cameras outsell their 35 mm film counterparts.

Digital cameras can include features that are not found in film cameras, such as displaying an image on the camera's screen immediately after it is recorded, the capacity to take thousands of images on a single small memory device, the ability to record video with sound, the ability to edit images, and deletion of images allowing re-use of the storage they occupied.


Digital cameras are incorporated into many devices ranging from PDAs and mobile phones (called camera phones) to vehicles. The Hubble Space Telescope and other astronomical devices are essentially specialised digital cameras.

Compact Digital Cameras
Compact cameras are designed to be small and portable; the smallest are described as subcompacts. Compact cameras are usually designed to be easy to use, sacrificing advanced features and picture quality for compactness and simplicity; images can usually only be stored using Lossy compression (JPEG). Most have a built-in flash usually of low power, sufficient for nearby subjects. Live preview is almost always used to frame the photo. They may have limited motion picture capability. Compacts often have macro capability, but if they have zoom capability the range is usually less than for bridge and DSLR cameras. They have a greater depth of field, allowing objects within a large range of distances from the camera to be in sharp focus. They are particularly suitable for casual and "snapshot" use.

There is Number of Companies which is Manufacturing Digital Cameras:
1) canon digital camera
2) Nikon digital camera
3) Aiptek Pocket digital camera
4) Pentax Optio digital camera
5) kodak digital camera
6) Casio digital camera
7) sony digital camera
8) olympus digital camera
And many more …….


Cameras are Catagorize as
1) 10 + megapixel cameras
2) Upto 9 mega pixel cameras
3) Digital Cameras Accessories


There are numerous options to buy Digital Camera.
1) There are retail shops
2) Company Showrooms
3) Electronics shops
4) Through Online Shopping


There are number of online shopping stores in India but Cafegadgets.in is the only one who gives one year manufacturing warranty, free shipping and many more facilities.
You can find difference in prices but from cafegadgets you can get better option to buy original digital cameras. Cafegadgets have direct contact with the vendors. Cafegadgets also has option of reviews So, you can also add your own reviews

Wednesday, May 21, 2008

Samsung Guru - Best Samsung Mobile Phone

Samsung Guru
Samsung has launched a new mobile phone which is the best mobile phone by samsung in this range. It cost aroung 1500 to 1600 Rs which considered to be the nominal price. These types of cell phones are usually popular among every class and fullfill every needs even used as business purpose, or by family purpose.


Features
Network: Dual-band (900/1800MHz)
DisplayType: 65k CSTN
Resolution: 128x128 Pixels
Size:
Weight : 78g
Dimension : 104 x 44 x 16.3 mm
Battery: Talk Time : up to 9 hours
Stanby : up to 450 hours


Specifications:


Platform:
Network & Data: Dual-band (900/1800MHz)
Java: Java MIDP 2.0


Size

Weight: 78g
Dimension: 104 x 44 x 16.3 mm


Display:

Internal Technology: 65k CSTN
Internal Resolution: 128 x 128 Pixels


Battery
Talk Time (Standard): up to 9 Hours
Standby (Standard): up to 450 Hours


Music and Sound
Ringtones: 64 Polyphonic Ringtones
Music Player: MP3 Ringtones


Fun and Entertainment
Embedded JAVA™ games


Business & Office

Voice Memo & Voice Mail


Messaging

SMS / MMS: SMS / MMS


Memory

User Memory: 2MB Internal Memory


Personal Information Management




Calendar
Worldtime
Alarm
Calculator


Call Functions

Speakerphone


Special Features

Mobile Tracker
Others: Hinglish SMS / Mobile Prayer / Embedded Bollywood Ringtones


Samsung Mobile Phones
GSM Mobile Phones
CDMA Mobile Phones
Mobile Phone Accessories

Wednesday, May 14, 2008

CDMA Mobiles

What is CDMA?
(Code Division Multiple Access) A method for transmitting simultaneous signals over a shared portion of the spectrum. The foremost application of CDMA is the digital cellular phone technology from QUALCOMM that operates in the 800 MHz band and 1.9 GHz PCS band. CDMA phones are noted for their call quality.

CDMA Is Efficient -
CDMA requires fewer cell sites than the GSM digital cell phone systems and provides three to five times the calling capacity. Providing more than 10 times the capacity of the analog cell phone system, CDMA has become widely used in North America and is also expected to become the third-generation (3G) technology for GSM. Now In India Tata Indicom, Reliance are providing CDMA services and is very cheaper in terms of setup cost, callin
g rates are very less as compared to GSM mobile service providers.
Cdma Mobiles
CDMA transmission has been used for military purpose as these are very secure way to communication

Blackberry CDMA Mobile Phones


  • BLACKBERRY 8703E CDMA MOBILE PHONE
  • BLACKBERRY PEARL 8130 CDMA MOBILE PHONE
  • BLACKBERRY CURVE 8330 CDMA MOBILE PHONE
  • BLACKBERRY 8830 CDMA MOBILE PHONE


Samsung Cdma Mobiles in India-
Samsung MAX F679 mobile
For Specification and features

Samsung 20N GSM + CDMA Dual Sim mobile Phone
For specifications and features
Comparision CDMA and GSM
CDMA (Code Division Multiple Access) was developed by Qualcomm for military antijamming systems, which translates into highly private conversations. It spreads a low power signal across a wide frequency width, which provides for a significant increase in subscriber capacity

GSM (Global System for Mobile Communications) was originally developed in Europe and works similarly to the TDMA system: it sorts messages into time slots. The unique feature of this technology is that it allows for a short message service, up to 124 characters, while simultaneously carrying voice traffic.

Disadvantage of GSM
Europe and North America operate at different frequency bands, you can't use your North American GSM phone while traveling through Europe.

Advantage of GSM
Most GSM phones use a removable Subscriber Identity Module (SIM Cards), more commonly known as a smart card, containing a user's account information, phone book, and security parameters. By inserting the smart card from your North American GSM phone into a European GSM phone, you can successfully roam throughout most of Europe if your provider has roaming agreements with European carriers. (The reverse is also true for European users in North America.)
Furthermore, manufacturers are currently developing multi-band GSM that, once made available to the public, will allow GSM phone owners from either side of the Atlantic to roam on both continents with a single phone

GSM Mobile Phones:
1) Nokia
2) Motorola
3) Samsung
4) LG
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