How are you going to get little Jimmy's crayon drawing for
Grandma all the way from the fridge to across the country in
mere seconds? Scan it and you're on your way! Scanning used to
be a specialized function performed most often by those in the
graphic arts and desktop publishing industries. But dropping
prices and the popularity of e-mail have boosted scanner sales
for the home through the roof. There's no need to mail or fax
anymore -- anything can be quickly transformed into a
digitized image and sent along to anxiously waiting
grandparents --- or clients, for that matter.
Scanners fall into the category of computer peripherals,
and every computer store usually keeps at least a few scanner
models in stock. For a big selection of scanners, try Onvia,
where you can buy scanners from $59.98 all the way up to over
$2,500. The Onvia site has an interesting mechanism called
"request for quote," which lets you list the features you want
and the price you'd like to pay. The quote is then sent to all
the suppliers, who will reply to your request with their
prices. Future Shop is an excellent source for any type of
computer peripheral, and has a good selection of scanners. If
you buy something from Future Shop online and change your
mind, it can be returned to any of their "bricks and mortar"
locations. Acer, Agfa, Artek, Canon, Epson and Hewlett Packard
are some of the brand name scanners you might want to consider
looking at. For comparison shopping, try Computers Plus
Online, Insight and the Micro Warehouse. Canada Computes http://www.canadacomputes.com/ and the
American publisher of "PC Magazine" http://www.zdnet.com/ are great sites to
visit before you buy, for reviews on various types of
scanners.
You can scan anything you want
A scanner captures images from photographic prints,
posters, magazine pages and many other sources, and digitizes
them for computer editing and display. Sometimes when buying
an entire computer system, a scanner is included in the
package. The performance of these scanners varies, and you
should evaluate each using the same criteria you would use
when buying a stand-alone scanner: sheet-fed or flatbed,
resolution (dpi), colour or black/white, speed, and the
communicator or port.
There are two main types of scanners for home office
purposes -- flatbed and sheet-fed. The main difference between
these scanners is how and what they scan. Flatbeds are the
most popular. Not surprisingly, the flatbed scanner has a flat
surface upon which material is placed for scanning. An image
sensor moves across the material in order to scan it. Flatbeds
are convenient for scanning 3-D objects such as books, can be
very compact and can scan a range of sizes. Flatbeds can
usually handle reflective and transparent (but not
see-through) material.
A sheet-fed scanner is strictly for reflective material,
and feeds the sheets through the scanner, past the image
sensor. Sheet-fed scanners are very compact and good if you
need to scan documents only. But keep in mind that these
scanners will not work on anything that isn't a single page,
such as magazines or books. This may mean a trip to the
photocopier before you can scan. Of course, you can avoid the
whole photocopier-scanner-fax redundancy problem by buying an
all-in-one home office machine.
Resolution is measured by dpi (dots per inch). A scanner
with higher dpi will produce better digital images. And with
any scanner, always consider the type of material it can
handle. Scanners come in black/white or colour, with colour
being the more expensive option. As with any home office
equipment, think about what your needs are before deciding on
which features are worth paying for.
It's only as good as the software
Scanners usually come with software that lets you resize
and otherwise modify a captured image. Manufacturers are
improving the software for scanners, making it easier to use
and more compatible with other programs. "Scanners today are
generally easy to use, but consumers do not want to fuss with
setting the software for specific applications," says John
Phillips, product manager at Agfa.
An example of the new scanning software is Agfa's ScanWise.
ScanWise automatically formats images or text for e-mail, word
processing, optical character recognition, web pages and
imaging applications. "You scan your child's drawing and get a
beautiful image, but if you don't scan it in the right colour
mode and resolution for e-mail, it could take a recipient 40
minutes to download it," Phillips explained. He says the new
scanners allow consumers to communicate in pictures,
especially when using e-mail. "Sending text via e-mail was the
first step," Phillips says. "Now it's time to give consumers
the tools to add images and bring electronic communications to
the next level."
Watch your port
Some scanners are compatible with both PC and Mac, and
others might only work in a Mac environment. Although more
scanners are being developed with dual capability, make sure
when you buy one that the computer you have can support the
scanner you choose. That means making sure the communicator or
port and the software are compatible with the equipment you
already have. Of course, if you buy the scanner with your
computer, this will be a given.
Glossary
Colour bit depth indicates how many bits (a bit is a unit
of storage for computers) are used to record the colour. The
rule is: the more bits used to store a colour, the more
colours that can be stored.
OCR refers to optical character recognition --- software
that makes it possible to scan pages of printed material and
convert them to text.
SCSI stands for small computer system interface and is
pronounced "Scuzzy." It transfers data faster than parallel
ports, and is especially good for scans of high resolution and
bit depth.
Quirks
Do something cool with your scanned pictures. In Media http://www.inmediapresents.com/ has software
specially designed to create slide shows and presentations
with music, sound effects and neat transitions using scanned
images. With Sights and Sounds Plus, instead of e-mailing
a static image to your friends and family, you can send
them an entire show of any event.