Eschenbach Prisma AF Mode D'emploi page 8

Focus
The camera will continuously autofocus to achieve the
sharpest image. However, please be aware that there
is a limited range over which the camera can focus.
Raising the camera too high (greater than 30cms from
the base of the camera to the page) or placing the
camera too low (less than 25cms from the page) will
mean the camera cannot focus at high magnification
correctly. If the image does not appear to be in focus,
try raising or lowering the camera to correct it.
Brightness
The image brightness can be adjusted to suit your
preference. Press and hold the Mode button for three
seconds and text of the form "Bri: 3" will appear in
the centre of the screen. Use the Zoom Up and Zoom
Down buttons to adjust the image as desired. Press
Mode again to save the setting. The setting you choose
will be saved and used subsequently for that mode of
operation.
Using the Prisma AF
Reading with the Prisma AF
Place the Prisma on a suitable table near the television
and sit in front of it. Ideally the television should be at
eye level or slightly below, and the Prisma reading table
should be level with your elbows when seated. A good
reading position prevents problems with your back,
neck and arms.
Place the material you wish to read on the reading table,
looking at the TV screen to see where you are. Adjust
the magnification to suit. Ensure the camera head is
horizontal for optimum image quality.
Move the book on the table until you locate the top of
the page and then locate the start of the text. Simply
slide the book side to side and watch the television
screen while reading.
There is a mat provided with your Prisma to facilitate
reading heavier materials. Place the mat across the
reading table with the rubber side upwards. Place the
book on the mat and slide the mat from side to side.
Writing with the Prisma AF
Remove the mat from the table. Place the page under
the camera and locate the area of the page where you
wish to start writing (the overview function is useful for
this). Holding the page firmly, bring your pen, raised
well above the paper, until the nib is visible on the
screen at the point you wish to write. Lower the pen
to the paper carefully and write. You should watch the
screen as you write.
Locating the Prisma camera in a well-lit area will
enhance the image available from the unit. If possible,
avoid direct overhead lighting as this can cause
shadows on the page, leading to shading differences on
the screen.
Mirror view
The Prisma AF has a mirror mode that is useful for
checking your appearance. The mirror mode engages
automatically when you tilt the camera head upwards to
face the camera outwards. The unit will switch to photo
setting when in mirror mode and switch back to the last
reading mode when returned to the reading position.
You should try to keep the Prisma AF close to the TV
screen for ease of use.
Focus lock
Press Mode and Overview simultaneously to turn off the
autofocus facility. Repeat to re-enable autofocus.
Lighting on/off
If you wish to turn off the LED lighting then, with the
unit powered off, press Zoom Up and power the unit on.
Repeat to allow the lighting to function again.
Sound on/off
The sounds can be disabled by Pressing Zoom Down
while powering on the unit. Repeat to enable the sounds
again.
Factory defaults
Press Mode while powering-on the Prisma AF to restore
factory settings for sound, lighting and brightness
settings.
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Place mat rubber side up
Slide the mat across the table