20x Magnification Binoculars
Long-Range Maximum with Image Stabiliser

A 20x binocular reaches near-spotting-scope magnifications – only usable handheld with image stabiliser. ALPEN Apex Steady 20x42 is the top choice for maximum reach without tripod.

What makes a 20x binocular special?

Long-Range maximum among stabiliser binoculars
Classic configuration: 20x42 with electronic image stabiliser
Top recommendation: ALPEN Apex Steady 20x42
For maximum handheld reach without tripod
Tripod models with 20x80 for astronomy available

When is a 20x binocular the right choice?

A 20x binocular is the right choice for maximum Long-Range observation in alpine terrain, for precision spotting, for astronomy with tripod and for everyone wanting to go beyond 16x handheld. For slightly less extreme magnification, a 16x binocular is more agile, for match shooting with reticle a 15x binocular is the more specialised choice.

20x42 or 20x80 – which configuration?

The second number on a 20x binocular (e.g. 20x42) gives the objective diameter. At this magnification, it determines between stabiliser compactness and tripod astronomy:

20x42 – stabiliser format with 2.1 mm exit pupil. Bright in daylight, usable handheld with stabiliser. More info on the 42 mm filter page.
20x80 – astronomy tripod class with 4.0 mm exit pupil. Size and weight require fixed tripod.

20x binocular: What to look for when buying?

For a 20x binocular, image stabiliser or tripod is mandatory – without, handheld use is impossible. For stabiliser models, check battery replaceability and stabiliser response time. For tripod models, high-quality ED or HD optics are mandatory. General buying criteria on the main category Binoculars & Field Glasses.

✓ Long-Range spotters and precision observers
✓ Hobby astronomers with tripod
✓ Mountain hunters and wildlife observers with maximum reach needs
✓ Users for whom 16x offers too little reach
✓ Specialists wanting a binocular alternative to a spotting scope

Frequently asked questions – 20x binoculars

Can a 20x binocular be used handheld?

Only with image stabiliser. Without, handheld use is impossible. With stabiliser (e.g. ALPEN Apex Steady 20x42), a 20x binocular becomes fully usable handheld.

Is a 20x binocular worthwhile compared to a spotting scope?

For two-eyed (binocular) observation, yes – more natural image and less eye fatigue. A spotting scope however goes significantly further with 30-60x and is optically superior at peak magnification.

Which objective size suits a 20x binocular?

20x42 as stabiliser model with 2.1 mm exit pupil (bright in daylight). 20x80 as astronomy tripod model with 4.0 mm exit pupil (also good at dusk).

How bright is a 20x42 binocular with stabiliser?

At 42 mm objective and 20x magnification, the exit pupil is 2.1 mm – bright in daylight. For dusk, this class is limited; larger objectives (20x80) clearly better.

Is a 20x binocular suitable for astronomy?

Very much so – especially with 80 mm objective (20x80) and fixed tripod. Shows moon craters in detail, Jupiter moons, star clusters and bright deep-sky objects.