| Size | Advantages | Nachteile |
| 10×25 | lightweight and compact | too small for astronomy often of poor quality („toy“) |
| 6×30 | lightweight and compact | low magnification many objects can‘t be resolved |
| 7×35 | large field-of-view compact no tripod necessary =>perfect for the Milky Way |
small aperture and exit pupil => only useful for brighter deep-sky-objects |
| 7×50 | large field-of-view no tripod necessary => can show even some dimmer deep-sky-objects. Good all-purpose-binocular |
low magnification can‘t show many details on moon and planets |
| 10×50 12×50 |
higher magnifications resolves more details and enhances contrast => good for observers in light-polluted areas |
slightly smaller field-of-view makes orientation in the sky harder. a tripod is necessary for most observers |
| 10×70 15×70 |
large aperture => very good for deep-sky |
heavy tripod is necessary |
| 11×80 | large aperture => very good also for dimmer deep-sky-objects |
heavy tripod is really necessary |
| 20×70 15×80 20×80 |
higher magnification benefits moon, planets and compact deep-sky-objects like planetary nebulas | heavy tripod is really necessary orientation in the sky is harder because of the small field-of-view |
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