Sometimes you either can't afford to buy or carry enough memory. Professional event photographers with digital SLRs can shoot many gigs of photos in one day. And what about traveling? Should you have to carry a laptop computer just to store your photos?
Portable digital storage devices are standalone hard drives that allow digital photographers to download and reuse their memory cards in the field. Capacities generally begin at 20 gigabytes and most are powered by rechargeable batteries. Many have LCDs for still image viewing and video playback. Images are transferred to your computer via USB or FireWire connection. If you travel a lot or find yourself running out of memory regularly, you may want to consider adding a portable storage device to your camera bag.
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Wednesday, December 19, 2007
Card reader
Card readers are the most efficient way to download your digital digital memory cards and a highly recommended digital camera accessory. Card readers plug into your computer via USB or FireWire port and allow you to transfer your files without using your camera's batteries or dealing with cables. You install the card reader as you would any other USB or FireWire device and plug the card into the reader when you want to transfer your images. The memory card will show up on your computer as a separate, removable drive when it's plugged into the reader.
Card readers are available in internal and external models with USB, USB 2.0, and FireWire connections. USB 2.0 and FireWire readers have considerably faster transfer rates than most cameras - another good reason to use a card reader instead of using your camera's supplied USB connection.
Card readers are available in internal and external models with USB, USB 2.0, and FireWire connections. USB 2.0 and FireWire readers have considerably faster transfer rates than most cameras - another good reason to use a card reader instead of using your camera's supplied USB connection.
Memory stick
Memory Stick was developed by Sony for their CyberShot digital cameras and other Sony electronic devices. With the exception of a very few cameras, Memory Stick is only compatible with Sony digital cameras. That means if you have Memory Stick media for a camera and you decide to buy another brand of camera, the Memory Stick cards you own are not likely to work with the new camera. On the other hand, if you own other Sony devices, there might be benefits to owning Memory Stick. Sony MP3 players, PDA's and selected Sony Vaio computers also accept Memory Stick media.
Memory Stick is available in capacities up to 256 MB, and Sony's new Memory Stick Pro is available in capacities up to one gigabyte.
Memory Stick is available in capacities up to 256 MB, and Sony's new Memory Stick Pro is available in capacities up to one gigabyte.
Digital camera memory
Digital camera memory is an essential and often overlooked piece of digital photography equipment. There are many types of memory and it's a good idea to consider what type of memory a camera uses before you buy your first digital camera. It's also important to make sure you have enough memory before you take pictures of an important event or leave for vacation. Although memory cards are reusable, they don't have a limitless capacity and it's always good to have more than you actually need.
Most digital cameras come with very low capacity memory cards. If you're shopping for your first digital camera make sure to budget for an additional card. It's a safe bet that the card that comes with your camera is woefully inadequate. And as camera megapixel counts grow, higher capacity memory cards become necessary. I started out with two 64 meg cards and now I have two 1 gigabyte and three 256 megabyte cards.
Most camera manufacturers publish tables on their Web sites to show how many images you can save on their included memory card. There is no fixed rule for the number of photos you can put on one card because different image file types, different amounts of compression, and image content all affect the size of each file. But the manufacturer's site is a good place to start when you decide how much memory you want. As a general rule, I'd recommend at least a 256 megabyte or two 128 megabyte cards if you're buying a 3-5 megapixel compact digital camera. If you want to shoot lots of high resolution TIFF or RAW files, then you'll probably want to look at 512 megabyte and 1 gigabyte cards. It's also a good idea to not save all of your photos on one card. There's always the possibility that cards can get corrupted, lost, or stolen. Using more than one and switching during a shoot protects your valuable photographic data.
Most digital cameras come with very low capacity memory cards. If you're shopping for your first digital camera make sure to budget for an additional card. It's a safe bet that the card that comes with your camera is woefully inadequate. And as camera megapixel counts grow, higher capacity memory cards become necessary. I started out with two 64 meg cards and now I have two 1 gigabyte and three 256 megabyte cards.
Most camera manufacturers publish tables on their Web sites to show how many images you can save on their included memory card. There is no fixed rule for the number of photos you can put on one card because different image file types, different amounts of compression, and image content all affect the size of each file. But the manufacturer's site is a good place to start when you decide how much memory you want. As a general rule, I'd recommend at least a 256 megabyte or two 128 megabyte cards if you're buying a 3-5 megapixel compact digital camera. If you want to shoot lots of high resolution TIFF or RAW files, then you'll probably want to look at 512 megabyte and 1 gigabyte cards. It's also a good idea to not save all of your photos on one card. There's always the possibility that cards can get corrupted, lost, or stolen. Using more than one and switching during a shoot protects your valuable photographic data.
Introduction - Evolution of the Mobile Market
The first radiotelephone service was introduced in the US at the end of the 1940s, and was meant to connect mobile users in cars to the public fixed network. In the 1960s, a new system launched by Bell Systems, called Improved Mobile Telephone Service” (IMTS), brought many improvements like direct dialing and higher bandwidth. The first analog cellular systems were based on IMTS and developed in the late 1960s and early 1970s. The systems were “cellular” because coverage areas were split into smaller areas or “cells”, each of which is served by a low power transmitter and receiver.
This first generation (1G) analog system for mobile communications saw two key improvements during the 1970s: the invention of the microprocessor and the digitization of the control link between the mobilephone and the cell site.
Second generation (2G) digital cellular systems were first developed at the end of the 1980s. These systems digitized not only the control link but also the voice signal. The new system provided better quality and higher capacity at lower cost to consumers.
Third generation (3G) systems promise faster communications services, including voice, fax and Internet, anytime and anywhere with seamless global roaming. ITU’s IMT-2000 global standard for 3G has opened the way to enabling innovative applications and services (e.g. multimedia entertainment, infotainment and location-based services, among others). The first 3G network was deployed in Japan in 2001. 2.5G networks, such as GPRS (Global Packet Radio Service) are already available in some parts of Europe.
Work has already begun on the development of fourth generation (4G) technologies in Japan.
It is to be noted that analog and digital systems, 1G and 2G, still co-exist in many areas.
This first generation (1G) analog system for mobile communications saw two key improvements during the 1970s: the invention of the microprocessor and the digitization of the control link between the mobilephone and the cell site.
Second generation (2G) digital cellular systems were first developed at the end of the 1980s. These systems digitized not only the control link but also the voice signal. The new system provided better quality and higher capacity at lower cost to consumers.
Third generation (3G) systems promise faster communications services, including voice, fax and Internet, anytime and anywhere with seamless global roaming. ITU’s IMT-2000 global standard for 3G has opened the way to enabling innovative applications and services (e.g. multimedia entertainment, infotainment and location-based services, among others). The first 3G network was deployed in Japan in 2001. 2.5G networks, such as GPRS (Global Packet Radio Service) are already available in some parts of Europe.
Work has already begun on the development of fourth generation (4G) technologies in Japan.
It is to be noted that analog and digital systems, 1G and 2G, still co-exist in many areas.
The Basics of Cellular Technology and the Use of the Radio Spectrum
The first radiotelephone service was introduced in the US at the end of the 1940s, and was meant to connect mobile users in cars to the public fixed network. In the 1960s, a new system launched by Bell Systems, called Improved Mobile Telephone Service” (IMTS), brought many improvements like direct dialing and higher bandwidth. The first analog cellular systems were based on IMTS and developed in the late 1960s and early 1970s. The systems were “cellular” because coverage areas were split into smaller areas or “cells”, each of which is served by a low power transmitter and receiver.
This first generation (1G) analog system for mobile communications saw two key improvements during the 1970s: the invention of the microprocessor and the digitization of the control link between the mobilephone and the cell site.
Second generation (2G) digital cellular systems were first developed at the end of the 1980s. These systems digitized not only the control link but also the voice signal. The new system provided better quality and higher capacity at lower cost to consumers.
Third generation (3G) systems promise faster communications services, including voice, fax and Internet, anytime and anywhere with seamless global roaming. ITU’s IMT-2000 global standard for 3G has opened the way to enabling innovative applications and services (e.g. multimedia entertainment, infotainment and location-based services, among others). The first 3G network was deployed in Japan in 2001. 2.5G networks, such as GPRS (Global Packet Radio Service) are already available in some parts of Europe.
Work has already begun on the development of fourth generation (4G) technologies in Japan.
It is to be noted that analog and digital systems, 1G and 2G, still co-exist in many areas.
This first generation (1G) analog system for mobile communications saw two key improvements during the 1970s: the invention of the microprocessor and the digitization of the control link between the mobilephone and the cell site.
Second generation (2G) digital cellular systems were first developed at the end of the 1980s. These systems digitized not only the control link but also the voice signal. The new system provided better quality and higher capacity at lower cost to consumers.
Third generation (3G) systems promise faster communications services, including voice, fax and Internet, anytime and anywhere with seamless global roaming. ITU’s IMT-2000 global standard for 3G has opened the way to enabling innovative applications and services (e.g. multimedia entertainment, infotainment and location-based services, among others). The first 3G network was deployed in Japan in 2001. 2.5G networks, such as GPRS (Global Packet Radio Service) are already available in some parts of Europe.
Work has already begun on the development of fourth generation (4G) technologies in Japan.
It is to be noted that analog and digital systems, 1G and 2G, still co-exist in many areas.
What is 3g technology?
3G wireless technology represents the convergence of various 2G wireless telecommunications systems into a single uniform global system which includes terrestrial and satellite components in its functioning.
3G or the third-generation wireless refers to near future developments in personal & business wireless technology, especially relating to mobile communications. 3G or The Third Generation will usher in many benefits as roaming capability, broad bandwidth and high speed communication (upwards of 2Mbps).
Network operators & telecommunications service providers are embracing the recently adopted global third generation (3G) wireless standards in order to cater to emerging user demands and to offer new services to their customers.3G wireless technology represents a shift from voice-centric services to multimedia-oriented like video, voice, data, fax services.
The most interesting & useful aspect of 3G wireless technology is its ability to unify existing cellular standards such as GSM, CDMA and TDMA.
3G or the third-generation wireless refers to near future developments in personal & business wireless technology, especially relating to mobile communications. 3G or The Third Generation will usher in many benefits as roaming capability, broad bandwidth and high speed communication (upwards of 2Mbps).
Network operators & telecommunications service providers are embracing the recently adopted global third generation (3G) wireless standards in order to cater to emerging user demands and to offer new services to their customers.3G wireless technology represents a shift from voice-centric services to multimedia-oriented like video, voice, data, fax services.
The most interesting & useful aspect of 3G wireless technology is its ability to unify existing cellular standards such as GSM, CDMA and TDMA.
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