Laser Rangefinders Tech Talk
Rangefinder. A laser rangefinder is a distance-measuring instrument that uses laser technology to calculate the distance to targeted objects. Accuracy is +/- 1 yard, and the distance is displayed instantaneously on a built-in, through-the-lens liquid crystal display.
Angle Range Compensation (ARC)
Targeting Modes:
Bow – Provides true horizontal distance from 5 to 99 yards.
Rifle – Provides bullet drop/holdover data in inches from 100 to 800 yards.
VSI™ (Variable Sight-In) Feature –
Now available on the new Legend 1200 ARC, this Rifle Mode feature
allows you to set your holdover/bullet-drop information for your
rifle’s zero – select between 100, 150, 200 and 300-yard sight-in
distances for deadly accurate information at the push of a button.
Measurements can be displayed in MOA or inches, and VSI also provides
shot angle information from-90° to +90°.
Through-the-Lens LCD Display:
Bushnell® Yardage Pro® rangefinders are fast and easy to use
because everything you need to know is displayed on our builtin,
through-the-lens LCD (liquid crystal display).
How Bushnell Rangefinders Work:
Bushnell’s Yardage Pro rangefinders use an invisible, eye-safe
Class 1 laser beam (as classified by the FDA), which is “bounced” off
distant objects with the press of a button. Then, the rangefinder’s
high-speed digital clock measures the time it takes for the laser beam
to reach the target and return to the unit. Next, using advanced
digital electronics, the rangefinder instantly calculates the distance
within +/- 1 yard and shows the range in either yards or meters on a
through-the-lens LCD display. The entire process is so fast that less
than a second elapses between the time you press the button to
generate a laser beam to the time the exact range to your target is
displayed.
Reflectivity of Target Types:
Because rangefinders “bounce” a laser beam off the target in
order to take a measurement, their range is partially determined by
the reflectivity of the target. In other words, hard or “reflective”
targets – such as a rock cliff or semi-truck – can be measured at
greater distances than soft surface targets – such as a deer. Ranges
for moderately reflective targets and trees, fall somewhere in the
middle. Most experienced hunters will use their rangefinder to
frequently estimate ranges to near and distant landmarks before they
actually encounter a game animal. By pre-measuring ranges to spots
where a game animal is likely to appear, they can concentrate on
making an accurate shot when the moment of truth arrives.
Selective Targeting Modes:
Rain – This feature compensates for precipitation to guarantee an accurate distance measurement through rain or snow.
Reflector – This feature increases the maximum measurement range for most highly reflective objects and is built into all of our rangefinders.
Scan – SCAN across the course while viewing a continuously updated LCD display of the distance between you and your target.
Bullseye™ –
Geared for close-range use, this mode acquires the distances of small
targets and game without inadvertently measuring background target
distances. When more than one object is acquired, the closer of the two
objects is shown on the LCD display.
Brush™ –
Ignores the foreground, such as brush, boulders and tree branches, and
provides distances on the LCD display to background objects only.
