The stronger the power of the lens, the smaller the diameter.
The stronger the lens, the closer it must be to the paper.
The greater the magnification used, the smaller the area viewed.
Strong lenses reduce the transmission of light, and thus more light may be required.
The direction a magnifier is faced, may make a big difference.
The closer your eye is to the magnifier, the wider the field of view.
High powered lenses have a lot of distortion.
Not all marked magnification powers are equivalent.
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