Ash Prisma User Manual - Page 5

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and raise or lower the camera with your other hand

as in the diagram below.

Lower the camera for higher magnification; raise it to

reduce the magnification.

Use the lowest magnification you are comfortable

with because:

∑ It is easier to locate your position on the page;

∑ There is less need to move a book on the table;

∑ The focus will work over a greater depth.

Focus

If you change the height of the camera, or if the

thickness of the material being read is changed, you

will need to re-focus the camera. Rotate the focus

control on the top of the Prisma until the image is at

its sharpest. The direction of rotation is unimportant.

Located under the top hinge, this control adjusts the

image to accommodate extreme lighting conditions

so that the text does not fade into the background

when moving.

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