How to Test Binoculars

At FREE SOLDIER, we aim to provide top-quality binoculars at competitive prices. However, we recognize that manufacturing defects can sometimes happen, so we recommend checking the quality of your binoculars after purchase.

Here are some things for you to check:

• Look at the objective lenses. Reject the binoculars if you see scratches or dirt.

• The hinge should move smoothly with steady resistance. Move the halves back and forth to check for any play or damage.

• Hold the binoculars at arm’s length, pointing them towards bright light. The exit pupils should be circular and evenly bright.

• If your eyes feel uncomfortable after using the binoculars, they might be out of collimation, causing misaligned images.

• To check for chromatic aberration, look at a high-contrast object like a tree against the sky. If you see green or violet fringes along the edges, the binoculars may have this issue. This can be a problem for bird watchers needing accurate colors.

How to Clean & Maintain Binoculars

After buying binoculars, you might wonder how to clean them. Start by gently blowing off dust and dirt instead of wiping the glass to avoid scratches. If needed, use a lens cleaning tool like a lens pen from a camera shop to clean any remaining spots.

Note: Don’t use your shirt or tissues to clean the lenses, as they can scratch the coatings. Keep the lenses clean and free of oil. Occasionally wipe the eyecups with vinyl and rubber preservatives to extend their life. Also, check that your neck straps and attachments are secure to prevent slippage.

How to Storage Binoculars

Keep binoculars in a cool, dry place away from dust and high humidity. It is best to keep them in a plastic bag or an airtight container with a desiccant. If this is not possible, do not store the binoculars in the supplied case, because they are easily affected by moisture.