2002 Conference Proceedings
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AN INSIDER'S TIPS & TRICKS: HOW TO USE & BUY
CCTV'S
Brian M. Smith, President
MagniSight Inc.
3360 Adobe Court
Colorado Springs CO 80907
Toll Free: 800-753-4767, extension 111
Fax: 719-578-9887
Email: larissas@magnisight.com
Summary:
This presentation offers tried and true tips and tricks on the
use and the purchase of CCTV video magnifiers. Brian will outline
the golden rule of reading with a CCTV, and will share valuable
tricks to maximize your machine. Brian has been a leading
manufacturer and an end-user of CCTV video magnifiers for over 10
years.
I. Tips on reading with a CCTV
- Golden rule: The tendency is to over magnify with a CCTV.
Make it big enough to where you can see it comfortably but not so
small that you struggle to see it.
- Let the x/y table move the viewing materials back and forth
under the camera instead of moving the material manually.
Exception: Small items like checkbooks, or business cards can be
moved by themselves, without the use of the x/y table.
- When a person is first starting out, have them use both hands
on either side of the x/y table. After the person has become an
accomplished user then they can use just one hand.
- Have the person use their finger when trying to locate
something to view. Place your finger on the beginning of the
location you want to see and then go find your finger in the
image.
- When a person first uses the x/y table, have them use the
brake and margin stops to slow or stop the table from moving.
After a person becomes more advanced, they may want to use their
hands to slow and stop the x/y table from moving. *Especially
when writing, use one hand to steady the table while the other
hand writes.
II. Tips on writing with CCTV'S
- If a person is a beginner, have them write in the smallest
magnification, increasing the magnification as they become more
accomplished.
- The smaller you make the image the bigger you write and the
bigger you make the image the smaller you write.
- Always use lined paper when learning to write with a CCTV.
With blank paper, it is hard to tell what is up and down.
- When writing, try writing a few words, then stop and move the
x/y table verses trying to move the table while writing. Don't
write out of your "eye" viewing area.
- A person needs to flip their pen around to find where the
camera is viewing the paper.
- It is recommended that you use a normal pen when writing
instead of a big felt marker.
- Write in positive mode verses negative mode.
- If a person writes at an angle, then turn the camera right or
left and keep the monitor facing straight.
III. Tips on user's comfort when using CCTV'S
- Read in the lower half of the screen. Looking from the table
to the top half of the screen for reading can cause neck
strain.
- Use an adjustable chair to raise the person up and down to an
ideal viewing position. If a person is steady on their feet, use
a chair that swivels and rolls. That way you can swivel and roll
the chair to get in and out of your machine.
- An individual can use an adjustable table to raise and lower
the CCTV to a comfortable position as well.
- The person's head should be facing straight into the screen
at the material to be read. Neck aches occur when they are
looking to far up or down, or from one side to the other.
- If a person is using a side-by-side system, position the
monitor on the person's better eye.
- Use an in-line system when the individual needs to be close
to the screen (less than 12 inches).
IV. Tips on buying CCTV'S
- First evaluate how the person will use it. What do then need
to accomplish with the use of a CCTV?
- When should you buy black and white verses color?
- a. Obviously first issue is what can the person afford. But
money aside, if the person will be using the machine primarily to
read text, then buy a black and white unit. Reading material is
generally a black and white image anyway. Consider multi-color
options for high contrast needs. A color system is great for
looking at photos, maps, recipes, magazines, and working with
crafts.
- What monitor size should a person use?
- The smaller the monitor is the higher the resolution is.
However, if a person is using more then half to two third
magnification then I recommend a bigger monitor. Keep in mind
that the individual can make the image smaller in a larger
monitor, which produces a greater field of view.
- Two-piece units should be used when an eye condition needs
greater separation between monitor and camera. This allows them
to access the x/y table while the screen is a distance away.
- When should options be used?
- Different color combinations are ideal when a person sees
certain colors better, or requires high contrast.
- Line marking and windowing is ideal when a person needs to
isolate text.
- Computer options are ideal when a person needs to work with a
computer and a CCTV.
- Split screen computer systems are ideal when a person needs
to transpose material.
- Auto Focus is ideal when a person needs to keep it as simple
as possible. Manual focus override on an auto focus system allows
for maximum versatility and allows complete control over unique
viewing situations.
End Notes:
Brian will use the outline above to discuss, in detail, the
various shortcuts and tricks he has learned over the years, both
as a user of CCTV's, and also as a manufacturer. Generally, the
end of the presentation allows for a question and answer session,
and a discussion of what has worked and hasn't worked for others
in the business.
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