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You can do IT in later life
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| Size (approx) | Item | Comments/Examples |
| 1 bit | The smallest unit | Stands for binary digit |
| 1 byte = 8 bits | The size of a single character | The main unit of measure |
| 1kilobyte (1KB) = 1,000 bytes | A measure of half a page of text | Usual measure of document size (Last month's column produced a Word document of 27.5KB) |
| 1 megabyte (1MB) = one million bytes | Some large documents and image files can be several megabytes | A floppy disk can hold 1.44MB data and a CD-ROM can hold 650MB |
| 512MB | Common size of main memory (RAM) | |
| 1 gigabyte (1GB) = one thousand million bytes | Hard disk storage space | Currently, you can buy PCs with an 80GB hard disk |
| 4.7GB | Typical DVD |
Going Digital
Q:
I want to buy a digital camera. What should I look
for?
A: Here are a few tips on buying a camera, but remember
that it must suit your own needs and pocket:
-
The quality of pictures very much depends on their resolution. This is the number of pixels (small "dots") that make up the picture and is measured in millions (megapixels). More expensive cameras can capture more pixels, but that is only important if you want to print out extra-large pictures. For normal use, 4, 5 or 6-megapixel cameras should all be fine. You should be able to buy one for ?40 - ?80.
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Look for a well-known make if you want a good lens. Most of the film, lens and camera companies you may have heard of (such as Fuji, Kodak, Leica, Minolta, Canon, Nikon, Olympus etc.) produce digital cameras of high quality.
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If you are a bit wobbly, look for an image stabilisation feature that minimises camera shake.
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Batteries don't last long, so does the camera have, or allow, the use of normal AA/rechargeables? Specialist batteries can be hard to find.
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One brilliant feature not in old-fashioned cameras is the LCD (liquid crystal display) screen at the back. Not only does it act as a viewfinder, but in 'playback' mode you can scroll through your pictures as soon as they are taken. If some images are no good, delete them and take the shot again. Check the size of the screen – 2.5" is a good size.
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Digital cameras store pictures on a slot-out memory card. There are a number of types to choose from, so ask in the shop if yours is standard in case you want to buy extra cards.
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If you don't have a computer, don't worry. You may see the term "PictBridge enabled" which means that the camera can be fitted to a compatible printer and you can print your photos direct. You can also buy photo printers that take the memory card. Otherwise, take your card into a shop and use the self-help photo kiosk to print photos, cards, CDs or calendars.
There
are lots of websites that review cameras and there are bargains
available all the time. One site worth visiting is
www.cameras.co.uk
which has a Camera Selector page where you can put in your
preferred features and view a list of relevant cameras to buy.
For more
help, look out for my new book "Your Digital Camera Made Easy"
published by Age Concern in the Spring.
View previous editions of
YoucandoIT
for more useful Questions and Answers
For a wealth of books on the web and IT generally,
visit Amazon
and under the books section select Computers and
Internet.
Don't forget to visit the general laterlife features section called laterlife interest
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