The catch
Nikon Monarch M7 8x30
Apparent enlargement is lower than on the 10x30.
Side by side
Nikon Monarch M7: 10x enlarges located subjects and brings neither closer focus nor a smaller body
Quick verdict
The M7 8x30 is the one when finding moving birds across a wider scene matters most. The M7 10x30 is for a larger view of a distant subject you have already located. Both need subjects at least 6.6 ft away, eye spacing within 56 to 72 mm and an eyecup or glasses fit check. The 8x30 also has the larger exit pupil, which is worth considering for dim-light use. The 10x30 offers neither closer focus nor a smaller listed body.
Before you buy
Why, and what it costs you
A wider search window, no larger bag slot needed
At the same distance the 8x30 shows about 24% more horizontal scene width than the 10x30, and both list the same length and width. For an unpredictable bird the wider view is the useful trade. If you mostly study a subject you’ve already located at a distance, the 10x image scale can matter more.
Where this comes from
Field width is specified for the same viewing distance. A wider field makes a subject easier to find, though it doesn’t promise sharper detail.
The catch
Nikon Monarch M7 10x30
With a 351 ft field there’s less room around a moving subject.
Nikon Monarch M7 8x30
- Why pick it
- A wider search view is your preference, and subjects are at least 6.6 ft away, your eye spacing is from 56 to 72 mm and the eyecups fit your eyes or glasses.
- The larger 3.8 mm exit pupil is useful to you for dim light, and 8x rather than 10x is acceptable. Subjects must be at least 6.6 ft away, your eye spacing must fit 56 to 72 mm and the eyecups must work for you.
- The catch
- Apparent enlargement is lower than on the 10x30.
Nikon Monarch M7 10x30
- Why pick it
- You would take 10x image scale over a wider scene, with subjects at least 6.6 ft away, eye spacing from 56 to 72 mm and eyecups that fit your eyes or glasses.
- The catch
- With a 351 ft field there’s less room around a moving subject.
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What this page compares
Both compact M7 models take up the same bag space. Decide on the viewing window and the eyeglass fit first, before assuming that 10x is a better all-round upgrade.
Which one fits
Pick the situations that sound like you
Locate moving birds in a broad scene
The 8x30 has the wider listed field, provided subjects are at least 6.6 ft away and its 56 to 72 mm hinge range and eyecups fit you.
- Nikon Monarch M7 8x30
- Better fit
- Nikon Monarch M7 10x30
- Good
Study a distant subject that’s already in view
10x raises image scale, provided subjects are at least 6.6 ft away and its 56 to 72 mm hinge range and eyecups fit. That is not a measured advantage in detail.
- Nikon Monarch M7 8x30
- Good
- Nikon Monarch M7 10x30
- Better fit
Go into the same small bag compartment
Both list bodies of 4.7 by 4.9 inches.
- Nikon Monarch M7 8x30
- Similar
- Nikon Monarch M7 10x30
- Similar
Watch from a set point 6 ft away
A closest-focus distance of 6.6 ft is listed for both.
- Nikon Monarch M7 8x30
- Not suitable
- Nikon Monarch M7 10x30
- Not suitable
In practice
Differences you will notice
A wider search window, no larger bag slot needed
At the same distance the 8x30 shows about 24% more horizontal scene width than the 10x30, and both list the same length and width. For an unpredictable bird the wider view is the useful trade. If you mostly study a subject you’ve already located at a distance, the 10x image scale can matter more.
How we worked this out
Field width is specified for the same viewing distance. A wider field makes a subject easier to find, though it doesn’t promise sharper detail.
Checking for glasses is a separate matter from magnification
Eye relief is listed as 15.8 mm for the 10x30 against 15.1 mm for the 8x30. Don’t assume the lower-power model must suit glasses better. Try the full field with your own frames and eyecup position. Neither specification by itself establishes suitability with glasses on.
How we worked this out
Eye relief is a specification to shortlist with. Whether you see the full field depends on your frames, eyecup position and eye position.
In dim light, the same front-lens size can perform differently
Exit pupil is 3.8 mm on the 8x30 and 3 mm on the 10x30. Nikon’s optics guide explains that a larger exit pupil matters more as the viewer’s pupil opens up in dim light. If your walks regularly run toward dusk, that’s a second reason to consider the 8x30 besides its wider scene. It isn’t a measured brightness comparison of the two models.
How we worked this out
The exit-pupil sizes come from the exact models. The benefit depends on the viewing light and on your eyes and not on the number alone.
Option A
Nikon, Monarch M7 8x30
Monarch M7 8x30
Carrying weight drops to 16.4 oz in this compact 8x30, yet the 435 ft field matches the larger M7 8x42. The trade is a smaller geometric exit pupil and shorter eye relief.
- Best for
- A wider search view is your preference, and subjects are at least 6.6 ft away, your eye spacing is from 56 to 72 mm and the eyecups fit your eyes or glasses.
Facts we checked
- Magnification: 8x
- Field of 435 ft at 1,000 yd
- Closest focus of 6.6 ft
- Eye relief of 15.1 mm
Option B
Nikon, Monarch M7 10x30
Monarch M7 10x30
You get a closer 10x view in a 16.6 oz body, without the weight of the 42 mm M7. Against the 8x30, though, the 351 ft field gives a moving subject less room.
- Best for
- You would take 10x image scale over a wider scene, with subjects at least 6.6 ft away, eye spacing from 56 to 72 mm and eyecups that fit your eyes or glasses.
Facts we checked
- Magnification: 10x
- Field of 351 ft at 1,000 yd
- Closest focus of 6.6 ft
- Eye relief of 15.8 mm
Spec by spec
Where they really differ
| Spec | Nikon Monarch M7 8x30 | Nikon Monarch M7 10x30 | In practice |
|---|---|---|---|
| Magnification | 8x | 10x | With 10x the subject looks larger. That doesn’t establish better resolved detail in your hands. |
| Field at 1,000 yd | 435 ft | 351 ft | A wider scene is left around a moving subject with the 8x. |
| Closest focus | 6.6 ft | 6.6 ft | A feeder closer than 6.6 ft isn’t solved by either one. |
| Eye relief | 15.1 mm | 15.8 mm | A 0.7 mm difference is a reason to try both with your frames and no guarantee of comfort. |
| Body dimensions and weight | 4.7 by 4.9 inches, 16.4 oz | 4.7 by 4.9 inches, 16.6 oz | Pick based on the view, and don’t invent a meaningful packing difference. |
| Diopter adjustment | Locking | Locking | The documented locking control is kept on both. |
| Eye-spacing adjustment | 56 to 72 mm | 56 to 72 mm | Users outside this hinge range are excluded by either one. Check every user and try the actual eyecups. |
| Exit pupil | 3.8 mm | 3 mm | For dim-light use, consider the larger opening, but don’t assume a measured brightness advantage. |
Trade-offs
What each pick costs you
With Nikon Monarch M7 8x30
- Its closest focus stops at 6.6 ft, the same as the 10x30. A feeder 6 ft from a fixed viewing point calls for a different position or another model.
With Nikon Monarch M7 10x30
- The 56 to 72 mm eye-spacing range matches the 8x30’s. Going up to 10x doesn’t make a shared pair usable for someone outside that range.
Change of plan
When the answer changes
You prefer the wider search view, and subjects are at least 6.6 ft away, your eye spacing runs from 56 to 72 mm and a tryout with glasses on or bare eyes goes well.
Go with Nikon Monarch M7 8x30. At 1,000 yd, the 435 ft viewing window gives 84 ft more scene.
You prefer 10x image scale to a wider scene, and subjects are at least 6.6 ft away, your eye spacing runs from 56 to 72 mm and a tryout with glasses on or bare eyes goes well.
Go with Nikon Monarch M7 10x30. What you give up is a narrower field of 351 ft, in the same 4.7 by 4.9 inch body.
Either the fixed viewing point is less than 6.6 ft away, or the user falls outside 56 to 72 mm eye spacing
Neither model fits. Those limits apply to both. Move to a different position or choose another verified fit.
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 Monarch M7 8x30 |
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| Nikon Monarch M7 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 Monarch M7 8x30
A wider search view is your preference, and subjects are at least 6.6 ft away, your eye spacing is from 56 to 72 mm and the eyecups fit your eyes or glasses.
The larger 3.8 mm exit pupil is useful to you for dim light, and 8x rather than 10x is acceptable. Subjects must be at least 6.6 ft away, your eye spacing must fit 56 to 72 mm and the eyecups must work for you.
See price & reviews on AmazonNikon Monarch M7 10x30
You would take 10x image scale over a wider scene, with subjects at least 6.6 ft away, eye spacing from 56 to 72 mm and eyecups that fit your eyes or glasses.
See price & reviews on AmazonEach link opens in a new tab.
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