Leupold RX Operating Instructions Manual page 5

CONDITION
Reflective Target (yd)
Trees (yd)
Deer (yd)
Surface texture, color, size and shape of the target all affect the reflectivity,
which in turn affects the maximum range of the instrument, to some degree.
As a rule of thumb, brightly colored targets are much more reflective than
darker targets. Tan game coats are more reflective (and thus provide a more
solid reading) than a black roof. A shiny surface is more reflective than a dull
surface. Smaller targets are more difficult to range than larger targets. Light
conditions, haze, fog, rain, and other environmental conditions can all affect
ranging performance. Any factor which degrades air clarity is a negative to
making the rangefinder work to the longest practical distances.
MAXIMUM RANGE
RX-I RX-II
750 750
600 600
500 500
3
RX-III RX-IV
1200 1500
800 900
700 800