Celestron Ultima 10x50 specs and field of view
At 26.1 oz the Ultima 10x50 weighs less than the 29.3 oz median for its size, and its 18 mm eye relief is above the 17.4 mm median.
- Field of view
- 315 ftat 1,000 yd
- Eye relief
- 18 mm
- Close focus
- 22.9 ft
- Weight
- 26.1 oz
- Exit pupil
- 5 mmcalculated
Why pick it
- 26.1 oz, lighter than the typical 29.3 oz
- 18 mm eye relief, enough for glasses
- Waterproof
Who the Ultima 10x50 suits
Dusk and low light suit the 5 mm exit pupil, and the 18 mm eye relief leaves room for eyeglasses. The 315 ft field equals the size median.
A close focus of 22.9 ft is more than twice the 9.8 ft median, so nearby subjects will not come into focus.
Ultima 10x50 aside, the most popular models of all sizes are in our best binoculars comparison. Ultima 10x50 is one of 40 models in the 10x50 binoculars comparison. Celestron lists it in the $100 to $200 price band, alongside the models in best binoculars under $200.
Ultima 10x50 specifications
Ultima 10x50 figures as Celestron prints them; rows marked * are calculated from the 10x50 size.
| Magnification | 10x |
|---|---|
| Objective lens | 50 mm |
| Prism type | Porro |
| Field of view | 315 ft at 1,000 yd (105 m at 1,000 m) |
| Angular field of view | 6° |
| Apparent field of view | 60° * |
| Eye relief | 18 mm |
| Close focus | 22.9 ft (7 m) |
| Eye spacing range | 50 to 74 mm |
| Weight | 26.1 oz (740 g) |
| Waterproofing | Waterproof |
| Fog-proofing gas | Nitrogen |
| Tripod adaptable | Yes |
| Maker list price | $100 to $200 |
| Exit pupil | 5 mm * |
| Twilight factor | 22.4 * |
| Relative brightness | 25 * |
* Calculated from the size, not printed by the maker.
Ultima 10x50 against other 10x50 binoculars
Ultima 10x50 shows 315 ft at 1,000 yd, at or above the 315 ft median of the 40 10x50 models in the chart. At 26.1 oz it is at or under the 29.3 oz median weight for the size.
Ultima 10x50 and its nearest rivals
Ultima 10x50 next to the 10x50 models closest to it in maker list price, with the best figure in each column in bold.
| Model | Field of view | Eye relief | Close focus | Weight | Exit pupil | Maker list price | Amazon |
|---|---|---|---|---|---|---|---|
| Celestron Ultima 10x50 | 315 ft | 18 mm | 22.9 ft | 26.1 oz | 5 mm | $100 to $200 | |
| Nikon Action 10x50 | 335 ft | 17.3 mm | 23 ft | 33 oz | 5 mm | $100 to $200 | |
| Celestron Outland X 10x50 | 294 ft | 17.4 mm | 8.2 ft | 27 oz | 5 mm | $100 to $200 | Check price on Amazon |
| Opticron Adventurer II WP PC 10x50 | 288 ft | 17 mm | 9.8 ft | 26.8 oz | 5 mm | $100 to $200 |
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Other sizes of the Ultima
Celestron makes the Ultima in 4 sizes; a larger front lens adds brightness and weight, and more magnification narrows the view.
| Model | Size | Field of view | Eye relief | Close focus | Weight | Exit pupil |
|---|---|---|---|---|---|---|
| Celestron Ultima 10x50 | 10x50 | 315 ft | 18 mm | 22.9 ft | 26.1 oz | 5 mm |
| Celestron Ultima 8x32 | 8x32 | 425 ft | 15 mm | 8.2 ft | 18.3 oz | 4 mm |
| Celestron Ultima 8x42 | 8x42 | 393 ft | 18 mm | 13.1 ft | 21.9 oz | 5.3 mm |
| Celestron Ultima 10x42 | 10x42 | 342 ft | 15 mm | 13.1 ft | 21.9 oz | 4.2 mm |
Celestron binoculars
Ultima 10x50 questions
Ultima 10x50: does it work with glasses?
Ultima 10x50 has 18 mm of eye relief, which meets the 16 mm the RSPB advises for people who wear glasses.
Ultima 10x50: what does 10x50 mean?
Ultima 10x50 magnifies 10 times through 50 mm front lenses, which works out to an exit pupil of 5 mm, the width of the beam of light that reaches each eye.
Ultima 10x50: how wide is the view?
Ultima 10x50 shows a view 315 ft wide at 1,000 yd, at or above the 315 ft median of the 40 10x50 models in the chart.
Ultima 10x50: can it go on a tripod?
Ultima 10x50 is tripod adaptable according to Celestron, so it accepts a binocular tripod adapter.