7x50 vs 10x50 Binoculars

Make Your Foresight Unclouded: 7×50 vs 10×50 Binoculars

People often get confused when choosing between 7×50 and 10×50 binoculars. Because of their quite similar functional activities. 

So, are you bewildered between 7×50 vs 10×50 binoculars?

7×50 has an exit pupil of 7.1mm. This is very applicable for the largest view. On the contrary, 10×50 has an exit pupil of 5mm. But binocular purchase depends on the usage. If you want it to use for marine, you should buy 7×50. But for stargazing, 10×50 binocular is the best purchase.

These are brief overviews. There are numerous other factors to consider. In our article, we’ll go through these in detail.

So let’s not waste any more time and get right at it!

7×50 vs 10×50 Binoculars: A Quick Rundown

To know the meaning of a binocular, a straightforward formula is applicable for all. Let’s know it first.

You will figure out magnification through the first number. And the second represents an objective lens. 

So, for 7×50 binocular means, it has 7x magnification. And the objective lens is 50mm in diameter for 7×50 binocular. 

For 10×50 binocular means, it has 10x magnification. And the objective lens is 50mm in diameter. You can say that 10x has greater magnification. But the diameter is identical for both the binoculars. 

Do you already know the basic differences between 10×50 and 20×50 binoculars? Now want to know about 7×50 and 10×50? 

Let’s see some quick comparison between 7×50 and 10×50 binoculars. What’re you waiting for?

Features7×50 Binocular10×50 Binocular
Objective lens50mm50mm
Exit Pupil7.1mm across5mm
Field of ViewExpanded than 10xNarrower than 7x

Here’re some basic factors you can see. There are lot more aspects. Can we dive into deep to know those details?

7×50 vs 10×50 Binoculars: A Comprehensive Rundown

You already know the basic factors of 7×50 and 10×50 binoculars. Now, we have a detailed comparison of these 2 for you. Let’s have a look.

Basically, 7×50 binoculars are mainly used for marine. It has an excellent light-capturing capability. 

This is why submariners or people in the Navy commonly use it. Apart from that, its size and weight are also recommended to use. 

Here’re some best-reviewed marine binoculars for you. 

If you’re looking for marine binoculars, these are best for you.

You need to look out for birdwatching if you have a keen interest in it. Then 10×50 is a good way out for you. The outdoor view will be graceful with it.


A common rule is fixed, pick out stargazing binoculars with an aperture of 35 mm to 60 mm. And a magnification of 7x to 10x. A pair of 7x35s is about the bare lowest for astronomical inspection.

7×50 binoculars have an exit pupil of 7mm, the maximum size you can use to witness the largest view.

Even better, the 10×50 binocular has a 5mm exit pupil. As you already know, the smaller the exit pupil, the larger the view. 

Winner: 10×50 binocular for stargazing.

Bird Watching

A moderate 7×50 binocular magnification is simple to use for newbies, and a 50mm objective lens collects plenty of light. 

Most models have a good field of view, making it easy to track a fast bird. The only disadvantage of a 7×50 design is that it is slightly larger than other configurations.

10×50 binoculars are a little too heavy for particular bird watching, and they have a few other disadvantages for bird watching. In general, the close focus length in these binoculars is not close. They may not have adequate eye relief.

Winner: 7×50 binoculars. 


Have you ever used a solar telescope to spot the sun? There’s an argument, a telescope or a binocular for astronomy. It’s pretty handy to use binoculars. 

Astronomy needs less magnification. The leading binoculars for astronomy are 7×50, 8×40, and 10×50. Let’s choose between 7×50 and 10×50. 

Another factor in choosing astronomy binoculars is the exit pupil. 

What exit pupil is best for astronomy? You’ll see a better view with a larger exit pupil. Especially at night, you’ll be the witness of it. 

7×50 binocular has a 7.1mm exit pupil. On the contrary, 10×50 binocular exit pupil is 5mm. Which one is better according to you? 

Winner: 7×50 binocular


Hunting binoculars need a clear view. If you’re looking at 5 yards or 5000, the image should be clear. This requirement depends on the diameter. 

Both the binoculars have the same diameter. They catch the same portion of light. This means depending on the diameter, you really can’t choose one.

7×50 binoculars would give you a brighter view because its field of view is more expanded than 10×50. For hunting, you should choose 7×50 over 10×50.

Winner: 7×50 binoculars. 

Final Verdict

You already can assume that purchasing binoculars depends on the purpose.

Both the binoculars are in the alike magnification. 7×50 binoculars have a 7mm exit pupil. 10×50 binoculars have a 5mm exit pupil. 

A larger exit pupil will lay out a brighter image. On the other hand, a larger exit pupil will give a larger image.

The 10×50 binocular is a bit heavier than the 7×50. It’s one of the demerits of 10×50 binoculars. 

If you want binoculars for stargazing, you should look for 10×50 binoculars.

On the contrary, if you wish to binoculars for hunting, birdwatching, and astronomy, you should go for 7×50. 

That’s all!


Which one is preferable, a 2x or 3x Barlow lens?

Barlow lenses are a low-cost method to extend the magnification of your viewfinder. A 2x Barlow, as expected, doubles your eyepiece magnification, while a 3x trebles it.

What exactly does exit pupil length imply?

The diameter of the light ray departing the viewfinder is measured in millimeters as the exit pupil. It reflects the common, the larger the exit pupil, the sunnier the image.

Are costlier binoculars value it?

High-end binoculars are made with higher-quality materials and tolerances, resulting in a better user experience. A high-quality binocular will have a magnesium chassis and all-metal components.


So here is the entire discussion about 7×50 vs 10×50 binoculars. It has finally reached an end. Despite their resemblance, I’ve tried to convey the deviation.

Hopefully, I can assist you in directing which of these alternatives is best for you. 


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