1. These special optics all serve the same general function, but different models do possess different specific features. You will need to research which model will best suit your needs.
2. Many binocular models have center focus, which is easy to set and adjust. Fixed-focus models focus automatically, which is highly convenient, but doesn't allow you to self-adjust.
3. A porro prism binocular is a little heavier and bulkier than the more streamlined roof prism binocular models, but they allow for brighter, crisper images.
4. Ones with larger exit pupils and objective lenses allow in more light. These models are best suited for astronomy, birdwatching, or hunting in low light, and are not totally practical for excursions in broad daylight.
5. Some marine binocular models are 100% fog-proof, waterproof, and slip-resistant, making them ideal for water sports, beachcombing, or boating trips.
6. If you are looking for a casual yet high-performance travel binocular to take along on your next trip, consider a compact version with auto focus. These are ideal for travel, as they fit neatly into a purse or travel bag.
7. A compact binocular with auto-focus is great for children. They are easy to handle and use, and some feature rugged, shockproof construction.
