The catch
Nikon Prostaff P7 8x30
Lower magnification for a distant subject that stays still
Side by side
Nikon Prostaff P7 8x30 vs Nikon Prostaff P7 10x30 Compared: For finding moving birds, 8x30 gives 31.8% more field width
Quick verdict
The Prostaff P7 8x30 is the choice for moving birds and a wide daytime view, with 31.8% more field width. Go with the 10x30 when your main job is a distant subject that stays still and you can live with the tighter 346 ft field.
Before you buy
Why, and what it costs you
More power takes a big bite out of the scene
A moving subject has more room on the 8x30 before it leaves the view. That advantage counts for more when several birds are moving between branches.
Where this comes from
Field widths are 456 and 346 ft. The 8x view is wider by 110/346, or 31.8%. The 10x model magnifies 25% more.
The catch
Nikon Prostaff P7 10x30
At 346 ft the field is much narrower
Nikon Prostaff P7 8x30
- Why pick it
- You sweep across moving birds as you walk
- A wider scene in the same compact body is what you want
- The catch
- Lower magnification for a distant subject that stays still
Nikon Prostaff P7 10x30
- Why pick it
- You care more about distant, stationary subjects than about a wide view
- You want 25% more magnification and no bigger body
- The catch
- At 346 ft the field is much narrower
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What this page compares
Nikon Prostaff P7 8x30 vs 10x30. Body size and eye relief are the same, so it comes down to a wider view for moving birds or more magnification for distant subjects.
A mixed trip with some moving subjects and others holding still across an open field is what these compact P7 binoculars are for.
Which one fits
Pick the situations that sound like you
On a walking trip, birds don’t stay still
With the 456 ft field there’s more room around the subject.
- Nikon Prostaff P7 8x30
- Better fit
- Nikon Prostaff P7 10x30
- Good
A distant subject stays put
At the same body size, the 10x view magnifies more.
- Nikon Prostaff P7 8x30
- Good
- Nikon Prostaff P7 10x30
- Better fit
Your glasses need more eye relief than is available
Both share the published 15.4 mm figure.
- Nikon Prostaff P7 8x30
- Depends
- Nikon Prostaff P7 10x30
- Depends
The feeder is just 7 ft away
Each starts at 8.2 ft.
- Nikon Prostaff P7 8x30
- Not suitable
- Nikon Prostaff P7 10x30
- Not suitable
In practice
Differences you will notice
More power takes a big bite out of the scene
A moving subject has more room on the 8x30 before it leaves the view. That advantage counts for more when several birds are moving between branches.
How we worked this out
Field widths are 456 and 346 ft. The 8x view is wider by 110/346, or 31.8%. The 10x model magnifies 25% more.
Going to 10x will not fix glasses fit
The published eye relief is 15.4 mm for both, and the eye-spacing range is the same. A change of magnification won’t give your frames any more eye-relief allowance.
How we worked this out
Both have 15.4 mm of eye relief, and both adjust across 56 to 72 mm of eye spacing.
Pack size does not push you toward the 8x
The listed body dimensions are the same on both, 4.9 by 5.1 inches. It’s the 10x that is 0.5 oz lighter, so decide by the viewing job and don’t assume lower power means a lighter pack.
How we worked this out
The weights come to 17.1 and 16.6 oz, and both bodies measure 4.9 by 5.1 inches.
Option A
Nikon, Prostaff P7 8x30
Prostaff P7 8x30
For daytime bird walks, the wide 456 ft field is a good match. The locking diopter holds one user's setting, but anyone else who picks it up still has to set it for their own eyes.
- Best for
- You sweep across moving birds as you walk
Facts we checked
- Magnification: 8x
- Scene width: 456 ft at 1,000 yd
- Eye relief of 15.4 mm
- Weight: 17.1 oz
Option B
Nikon, Prostaff P7 10x30
Prostaff P7 10x30
Weighing 16.6 oz, it is an easy way to bring 10x magnification along in a small bag. Eye relief matches the 8x30 at 15.4 mm, but the 346 ft field is substantially narrower.
- Best for
- You care more about distant, stationary subjects than about a wide view
Facts we checked
- Magnification: 10x
- Scene width: 346 ft at 1,000 yd
- Eye relief of 15.4 mm
- Weight: 16.6 oz
Spec by spec
Where they really differ
| Spec | Nikon Prostaff P7 8x30 | Nikon Prostaff P7 10x30 | In practice |
|---|---|---|---|
| Magnification | 8x | 10x | 10x magnifies 25% more than 8x. |
| Scene width | 456 ft at 1,000 yd | 346 ft at 1,000 yd | A good deal more scene width is kept with 8x. |
| Eye relief | 15.4 mm | 15.4 mm | No difference that fixes a glasses-fit problem. |
| Weight | 17.1 oz | 16.6 oz | The 10x model weighs slightly less. |
| Closest focus | 8.2 ft | 8.2 ft | A 7 ft feeder is beyond both. |
Trade-offs
What each pick costs you
With Nikon Prostaff P7 8x30
- A personal fit check is still needed for the shared 15.4 mm eye relief
With Nikon Prostaff P7 10x30
- At a calculated 3 mm, the exit pupil is smaller than the 8x30’s 3.75 mm
Change of plan
When the answer changes
The main frustration is keeping up with moving birds
Go with Nikon Prostaff P7 8x30. That constraint is addressed by the wider 456 ft field.
Most of the time you study distant subjects from a set spot
Go with Nikon Prostaff P7 10x30. More magnification is then worth more than more scene width.
The closest thing you watch is 7 ft away
Neither model fits. Each needs at least 8.2 ft.
Decision guide
How to decide
Moving birds in a wide daytime view call for the Prostaff P7 8x30, which shows 31.8% more field width. If the main subject is distant and stationary, the 10x30 makes sense, provided you accept its tighter 346 ft field.
More power takes a big bite out of the scene
A moving subject has more room in the 8x30 before it slips out of view, which helps most when several birds are moving between branches. The fields are 456 and 346 ft, so the 8x view is wider by 110/346, or 31.8%. The 10x model, for its part, gives 25% more magnification.
Going to 10x will not fix glasses fit
Both models publish 15.4 mm eye relief and the same eye-spacing range, so a different magnification will not give your frames any more allowance. In detail, eye relief is 15.4 mm on each, and eye spacing adjusts from 56 to 72 mm on each.
Pack size does not push you toward the 8x
Listed body dimensions are identical at 4.9 by 5.1 inches. The 10x is in fact 0.5 oz lighter, so pick by the viewing job and do not assume lower power means a lighter pack. The weights are 17.1 and 16.6 oz, and both bodies measure 4.9 by 5.1 inches.
What this page can’t tell you
- Nothing here comes from hands-on sharpness, steadiness or brightness tests. The comparisons rest on manufacturer specifications and can be reproduced.
- The exit pupil is a calculation, objective diameter divided by magnification. It does not prove measured light transmission or a low-light winner.
- A published eye-relief figure or body size cannot promise that the pair fits your glasses or clears space in a packed case.
By the numbers
What the data shows
What we found across the binoculars we compare, plus the checked facts behind each finding.
Show the facts and the math
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Nikon Prostaff P7 8x30 |
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| Nikon Prostaff P7 10x30 |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Nikon Prostaff P7 8x30
You sweep across moving birds as you walk
See price & reviews on AmazonNikon Prostaff P7 10x30
You care more about distant, stationary subjects than about a wide view
See price & reviews on AmazonEach link opens in a new tab.
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