Two models, the numbers decide

Olympus 10×50 DPS-I or Nikon Aculon A211 10×50?

Olympus 10×50 DPS-I — 50 mm, €95. Nikon Aculon A211 10×50 — 50 mm, €120. The same method as everywhere on this site: the numbers first, the verdict from them.

Same family (10×50 binoculars): what changes between these two is aperture, bulk and price — not character.

10×50 binoculars

Olympus 10×50 DPS-I

10×

The Pleiades at 10× in 50 mm — exit pupil 5.0 mm, Bortle 6 sky. Computed, not photographed.

€95indicative, seen 17 Aug 2026

All the sellers

10×50 binoculars

Nikon Aculon A211 10×50

10×

The Pleiades at 10× in 50 mm — exit pupil 5.0 mm, Bortle 6 sky. Computed, not photographed.

€120indicative, seen 17 Aug 2026

All the sellers

Side by side

	Olympus 10×50 DPS-I	Nikon Aculon A211 10×50
Aperture	50 mm	50 mm
Focal ratio	200 mm · f/4.0	200 mm · f/4.0
Typical weight	0.8 kg	0.9 kg
Setup time	1 minutes	1 minutes
Learning curve	1 out of 5	1 out of 5
Useful magnification	≤ 100×	≤ 100×
Resolution (Dawes)	2.3″	2.3″
Observed price	€95indicative, seen 17 Aug 2026	€120indicative, seen 17 Aug 2026
Where to buy	All the sellers	All the sellers

Choose the Olympus 10×50 DPS-I if…

budget decides: €25 less

Full page on the 10×50 DPS-I →

Where to buy

Search at First Light Optics · Optique Unterlinden · Pierro Astro · Teleskop-Express (searches; neither price nor stock checked)

None of these links earn us anything.

Choose the Nikon Aculon A211 10×50 if…

The numbers give it few arguments — the other wins this one.

Full page on the Aculon A211 10×50 →

Where to buy

Search at First Light Optics · Optique Unterlinden · Pierro Astro · Teleskop-Express (searches; neither price nor stock checked)

None of these links earn us anything.

The same sky, through both

These circles are simulations, computed from the aperture, the magnification and the sky — indicative, not exact. A real night also depends on the turbulence, your eyes and your experience. Closer to the truth than the photo on the box; still not a promise.

The Moon

10×50 DPS-I · Recognisable

Aculon A211 10×50 · Recognisable

Saturn

10×50 DPS-I · Recognisable

Aculon A211 10×50 · Recognisable

The Orion Nebula

10×50 DPS-I · Detectable

Aculon A211 10×50 · Detectable

The Andromeda Galaxy

10×50 DPS-I · Detectable

Aculon A211 10×50 · Detectable

Photo credits

These thumbnails are built from real photographs, scaled and darkened by the same arithmetic as the large view.

The Pleiades: Wikimedia Commons, Plejades (M45).jpg, CC0
The Moon: NASA Scientific Visualization Studio / LRO, public domain
The Orion Nebula: NASA, ESA, M. Robberto (heic0601a), CC BY 4.0
The Andromeda Galaxy: Adam Evans, Wikimedia Commons, CC BY 2.0