User's Manual
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6. To turn the unit o, press and hold the on/o button for 3 seconds.
DIOPTER ADJUSTMENT
The Sightmark Photon RT’s eyepiece (5) is designed to rotate to adjust for diopter. If the display does not appear
clear, crisp, nor sharp, rotate the eyepiece until the reticle becomes clear and sharp. This adjustment should stay
the same unless the riescope’s operator changes. To adjust the eyepiece:
1. Locate the eyepiece (5) on the back of the unit.
2. While looking through the eyepiece, rotate the eyepiece until the display and its icons are clear and crisp.
FOCUSING
The Sightmark Photon RT’s lens focus ring (6) allows the riescope to deliver a clear, sharp image. Anytime the
viewing distance of a target is changed, generally the image must be refocused. To focus the image:
1.Turn the lens focus ring (6) until the image is focused. Make sure the image is always well focused as this will
prevent eye fatigue.
ADJUSTING DISPLAY BRIGHTNESS
The Sightmark Photon RT’s display is equipped with adjustable brightness. This allows the brightness to be cus-
tomized to the user’s preference.
To adjust the display brightness:
1. Locate the controller (3) on top of the unit to control brightness.
2. Rotate the controller clockwise to increase brightness.
3. Rotate the controller counter clockwise to decrease brightness. The brightness level, 0-20, is shown on the
display.