Major Science SmartView Pro 1100 Instruction Manual page 55

Step5-1 The result of Contrast is shown below. Press
press to cancel.
b. : Confirm action
Step6 Negative: To reverse the image between black and white by pressing
on the Negative button (as box 1). If you don t want to negative the
image, you can press the Negative button again or you can press
the Undo button (as box 2) to recover the image.
c. : Cancel
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to proceed or