Colorado - Binoculars Barska - Free user manual and instructions

Product Type	Binoculars
Brand	Barska
Model	Colorado
Waterproof	Yes (select models)
Fog-proof	Yes (select models)
O-ring Sealed	Yes (select models)
Nitrogen Purged	Yes (select models)
Eyecups	Rubber roll-down or pop-up
Interpupillary Distance Adjustment	Yes
Focus System	Center, Individual, or Focus-free (select models)
Zoom Feature	Available on select models
Diopter Adjustment	Yes
Lens Cleaning	Soft cloth, photographic lens tissue, isopropyl alcohol
Storage	Cool, dry place; eyecups up
Safety Warning	Do not view sun directly
Internal Cleaning	Not recommended

Frequently Asked Questions - Colorado Barska

How do I adjust the interpupillary distance (IPD)?

Hold the binoculars in viewing position. Move the barrels closer together or further apart until you see a single circular field. Always re-set to this position before using. Refer to Figure 1 in the manual.

How should I clean the lenses?

Blow away dust or use a soft lens brush. For dirt or fingerprints, clean with a soft cotton cloth in circular motion. Use photographic lens tissue and isopropyl alcohol for thorough cleaning. Apply fluid to cloth, not directly on lens. Never clean internally.

How do I use the eyecups if I wear glasses?

If you wear glasses, roll down the rubber eyecups. This brings your eyes closer to the lens for an improved field of view. Pop-up eyecups can be adjusted similarly.

Are these binoculars waterproof?

Select models are waterproof and fog-proof. They are O-ring sealed and nitrogen purged to remove internal moisture. Check your specific model specifications.

How do I focus the binoculars?

First adjust interpupillary distance. For center focus, use central focusing wheel after setting diopter. For individual focus, rotate each eyepiece separately. Focus-free models require no adjustment.

What is the diopter adjustment for?

The diopter adjustment compensates for differences in eye strength between your left and right eyes. After setting, you can focus at various distances using the center wheel only.

Can I use these binoculars for stargazing?

Yes, binoculars are suitable for stargazing. For best results, choose a model with larger objective lenses. Ensure you avoid looking at the sun or bright light sources.

What does 'focus-free' mean?

Focus-free binoculars have a fixed focus optical system that does not require manual adjustment. They are designed to keep objects in focus at a range of distances, offering convenience.

How do I use the zoom feature?

Set the zoom lever to highest power first. Adjust diopter for your eyes. Then you can zoom in or out on distant objects. Focus at high power first for best results at lower powers.

Why should I not look at the sun with binoculars?

Looking directly at the sun or any bright light source through binoculars can cause permanent eye damage. Always avoid focusing on the sun.

USER MANUAL Colorado Barska

III. WATERPROOF/FOG-PROOF (select models)

Your binocular may be designed and built utilizing the latest waterproof and fog-proof technology. Waterproof models are O-ring sealed for complete protection. Fog proof protection is achieved from dry nitrogen purging to remove all internal moisture.

IV. EYECUPS

Your binocular is fitted with either rubber roll-down or rubber pop-up eyecups designed for your comfort and to exclude extraneous external light. If you wear sun/eye glasses, roll down the eyecups. This will bring your eyes closer to the binocular lens thus providing improved field of view.

Fig.4 BINOCULAR EYECUPS

V. INSTRUCTIONS FOR CARE

If handled with care, this binocular will provide years of trouble-free service. Like any fine optical instrument your binocular should be given sensible care. Non waterproof models should not be exposed to excessive moisture.

1. Keep the lens covers (that come with your binocular, except compact models) on the lenses when binoculars are not in use.
2. Store binoculars with the eyecups up. Thus avoiding excessive stress and wear on the eyecups in the down position.
3. Avoid banging and dropping.
4. Store in a cool, dry place.
5. Looking directly at the sun with your binocular may be very harmful to you eyes.

VI. CLEANING

1. Blow away any dust or debris on the lens (or use a soft lens brush)
2. To remove dirt or fingerprints, clean with a soft cotton cloth rubbing in a circular motion. Use of a coarse cloth or unnecessary rubbing may scratch the lens surface and eventually cause permanent damage.
3. For a more thorough cleaning, photographic lens tissue and photographic-type lens cleaning fluid or isopropyl alcohol may be used. Always apply the fluid to the cleaning cloth-never directly on the lens.

VERY IMPORTANT

Never attempt to clean your binocular internally or try to take it apart.

CAUTION: DIRECTLY VIEWING THE SUN OR ANY LIGHT SOURCE WITH THIS OPTICAL DEVICE CAN CAUSE PERMANENT EYE DAMAGE.

©2010 BARSKA® | La Verne, CA 91750

www.barska.com BC152

BINOCULAR INSTRUCTIONS

Black binoculars with no visible text or symbols on the device itself

©2010 BARSKA® | La Verne, CA 91750 models may vary www.barska.com

INSTRUCTIONS FOR USE

This binocular is a precision instrument designed to provide many years of pleasurable viewing. This booklet will help you achieve optimum performance by explaining how you can adjust the binocular to your eyes, and how to care for this instrument. Read the instructions carefully before using your binoculars.

CAUTION: DIRECTLY VIEWING THE SUN OR ANY LIGHT SOURCE WITH THIS OPTICAL DEVICE CAN CAUSE PERMANENT EYE DAMAGE.

I. EYE ADJUSTMENTS (FIGURE 1)

Fig.1 INTERPUPILLARY DISTANCE ADJUSTMENT

The distance between the eyes, called “interpupillary distance” (IPD), varies from person to person. To achieve perfect alignment of lens to eye, follow these simples steps.

1. Hold your binocular in the normal viewing position.
2. Grasp each barrel firmly. Move the barrels closer together or further apart until you see a single circular field. Always re-set your binocular to this position before using.

HOW TO ADJUST FOR INDIVIDUAL EYE STRENGTH

Human eyes are as individual as fingerprints. This binocular has a feature which allows you to adjust the binocular to your vision. Follow the focusing instructions for your binocular style.

II. FOCUSING

Binoculars have three primary focusing systems, center, individual and focus-free. "Zoom" binoculars utilize the center focus system.

CENTER FOCUS-has a central focusing wheel between the barrels.

INDIVIDUAL FOCUS-each eyepiece is focused separately. Most typically with waterproof/fog-proof models.

FOCUS FREE-binocular require no focusing adjustment.

Center For Wheel
Fig.2 DIOPTER SETTINGS

1. Adjust interpupillary distance (Figure 1)
2. Keep both eyes "open" at all times.
3. Using a lens cover or your hand, cover the objective (front) lens of the side with the "diopter setting"
4. Using the center focus wheel, focus the distant object being viewed.
5. Cover the other objective lens, then view the same object as explained above.
6. Using the "diopter setting" adjustment ring, focus the same object being viewed. Caution should be used as over turning or forcing the diopter eyepiece can damage or cause the eyepiece to break away from the chassis.
7. Your binocular should be adjusted for your eyes. Focus at both far and near distance can now be attained simply by turning the center focus wheel.

INDIVIDUAL FOCUS (select models)

1. Adjust interpupillary distance. Make a note of the number which appears on the central hinge scale. Always re-set your binocular to this position before using. (To see a single

2. Cover right objective (front) lens with your hand. Rotate left eyepiece until image is focused.

3. Follow the same procedure for the right eye. The eyepiece should be turned in a counterclockwise direction for more distant objects. With the image now in focus, make a note of the diopter setting for future use.

FOCUS-FREE (select models)

Focus-free binoculars offer “never needs focusing” optical systems.

"ZOOM" FEATURE (select models)

1. Follow the steps for focusing as outlined under "Center Focus"
2. When focusing a “zoom” binocular, it is best to begin at the highest power. This will provide a more comfortable focus at the lower powers. Set the “zoom” lever at high power.

Fig.2 "ZOOM" SETTINGS

1. Adjust your binocular for individual eye strength using the "diopter setting"

Your binocular is now adjusted properly for your eyes. You may now “zoom” “out” or “in” on any distant object.

Note: to focus on an object at a closer distance, focus on the object at high power first and then adjust the “zoom” lever to the desired lower power. With any “zoom” instrument, better quality images are possible at lower powers.