
IN 071 Rev B 02/09
Vista™Series Binoculars
Congratulations on your purchase of a precision Orion Vista™ binoc-
ular. With proper care and use it will provide many years of superb,
enjoyable viewing. To get the most out of your binocular, please read
the following instructions.
Adjusting for the Distance Between Your Eyes
The distance between the eyepiece lenses of the binocular should be
adjusted to match the distance between your eyes, called the “interpu-
pillary distance.” To adjust the binocular, hold each barrel firmly; move
them together or apart while looking through the binocular with both
eyes until you see a single, round field. Make this adjustment before
focusing.
Focusing
Vista binoculars feature a convenient center focusing knob. However,
because your eyes may differ slightly in their focus, the binocular
also includes a right eye diopter adjustment. Follow this method for
focusing:
With both eyes open, rotate the right eyepiece to the full counterclock-
wise position, then sight on a distant subject. Cover the right objective
(front) lens with your hand. Turn the center focusing knob until the
image in the left eyepiece is sharp. Now cover the left objective lens
and focus the right side by rotating the right eyepiece (do not adjust
the center focusing knob) until the image is sharp. The binocular is
now focused for your eyes. Make a note of the diopter setting so you
can return to it quickly in the future. With the right eyepiece now set,
focusing is achieved by rotating the center knob.
Rubber Eyeguards
Vista binoculars feature rubber eyeguards designed to block out
stray light and allow easier positioning of the eyes for viewing. When
using the binocular without eyeglasses, we recommend leaving the
eyeguards in the extended (up) position. For viewing with eyeglasses
on, you’ll see more of the field of view by retracting the eyeguards. The
eyeguards on the 8x42 and 10x50 Vista retract by folding them back.
The eyeguards on the 7x50 model are the pop-down type. These are
retracted by pressing the rubber down on one side of the eyeguard
and then sliding your fingers around to the opposite side while applying
downward pressure.
Mounting Your Binoculars on a Tripod
For steadier or extended viewing, you can mount your Vista™binocular
on any standard camera tripod by means of an optional L-bracket
adapter (available from most binocular dealers). Unscrew the small
cap bearing the white tripod symbol located at the front of the center
shaft, between the two binocular barrels. Removing this cap reveals a
1/4"-20 threaded hole. Thread the bolt of the L-bracket into the hole.
The base of the L-bracket is threaded onto the tripod itself.
Cleaning and Care
Although your Vista™binocular is rubber covered, it is not waterproof!
Avoid exposure to excessive moisture.
The lens surfaces of your binocular are vacuum-covered with antireflec-
tion coatings that can be damaged with careless handling. Avoid touch-
ing lens surfaces with your fingers or any course material. Clean the
lenses about twice a year, or more frequently if they get noticeably dirty.
The dust that builds up on them promotes mold growth, which etches
the glass and destroys the coatings. Always use lens cleaning tissue and
fluid designed specifically for multi-coated lenses. Do not use tissue or
fluids made for eyeglass or household use.
To clean the binoculars, first puff air on the lens with a blower bulb or
compressed air to remove any large particles. Then it’s a good idea to
brush the lens with a soft lens brush. Next, put two drops of lens clean-
ing fluid on a sheet of lens tissue (never directly on the lens). Wipe the
lens gently in a circular motion, taking care to avoid undue pressure or
rubbing. Quickly remove the excess fluid with a clean, dry lens tissue.
On larger lenses, clean only a small area at a time, using a fresh lens
tissue on each area.
If dirt accumulates on an interior lens surface, do not attempt to disas-
semble the housing and clean the lens yourself. Take the binocular to a
qualified optical repair technician.
Storage and Cold Weather
All optics, when exposed to excessive temperature changes or high
humidity, have the potential to fog up. In cold weather always allow the
optics to adjust slowly to the outdoor temperature for a few hours prior
to use by storing the binocular (in its case) in a cool area such as an
unheated garage or the trunk of a car. Before bringing the binocular
back inside a warm house after use, store it in a cool area for one to two
hours. It is important to then open up the case, remove the binocular,
take off the lens caps, and let everything dry out overnight. Store the
instrument in a cool, dry place; storage in a humid environment will result
in mold growth and ruined optics. This is not covered by the warranty.
Repair
If your Vista binocular should require internal cleaning, optical align-
ment, or other repairs, return it to Orion (if under warranty) or take it
to a qualified optical repair shop for service. Never disassemble the
binocular yourself. Doing so may disturb the precision optical align-
ment and will void your warranty.
Warning: Never look at the Sun with binoculars or any
other optical instrument. Severe and permanent eye dam-
age could result. On sunny days, children should use
binoculars only with adult supervision.