What Does Monocular 6 x 50mm Mean? – Detailed Guide

People often ask, what does monocular 6x 50mm mean

Let’s find out!

What Does Monocular 6 x 50mm Mean?

The 6x50mm monocular means that the magnification is 6 times and the field of view is 50mm. The focal length of a lens is how far away an object appears in front of or behind the camera when it is focused on infinity.

A 50mm lens has a focal length of about 50 millimeters (about 2 inches). 

How Do You Know What Magnification To Use?

Before buying a new lens, you need to know how much magnification you want. There are several methods for figuring this out:

Look at your subject. If you’re photographing landscapes or nature scenes, you may need less zoom than if you were taking pictures of humans or animals.

Measure the distance between your eyes and the closest point on your subject’s face. You can use a measuring tape or a laser rangefinder for this step.

If you’re taking pictures of people, calculate the percentage of their height compared to the width of the camera’s sensor. For example, using a 10-15mm lens, you’d be cropping the photo by 10%.

Look for other options in your lens bag. Some lens brands have different zoom ranges so you might need to switch them out if you want to use both together.

Take photos of objects at different distances. If you notice that some parts of an object appear too big or too small compared to the rest, you’ll be able to determine which settings you need to use.

Try out different settings until you get something that works well for you.

Monocular vs. Spotting Scope

A monocular is an optical instrument that allows one person to view distant objects without having to hold the device steady. Monoculars come in various sizes and shapes, ranging from small pocket models to large field binoculars.

They can also be handheld or mounted on tripods. Most people who own a monoculars use them for recreational purposes such as viewing birds, landscapes, and wildlife. Spotters use monoculars to observe animals and plants from a distance.

spotting scope.

If you carry your monocular around for most of the day, you may as well buy a spotting scope so you can see things from farther away. It will provide better results and let you move around while still being capable of seeing objects.

Why Is A Monocular Better Than A Spotting Scope?

Monoculars usually cost less than spotting scopes but they’re not always better. There are many reasons why spotting scopes might be better than a monocular.

  1. smaller and lighter.
  2. easier to carry around.
  3. cheaper.
  4. easier to focus.
  5. easier to clean.
  6. They’re easier to store.
  7. They’re easier to carry.
  8. They’re easier to fix.

Understanding Angle of View

The angle of view walks hand in hand with field of view as they refer to the same thing: the amount of horizontal scenery that is visible when looking through the binoculars.

We will discuss them separately to avoid confusion, and show you how to convert one to the other if needed.

First, angle of view (AoV):

AoV is always expressed in degrees. The higher the number, the wider the area you’ll be able to see. Anything over 6 degrees can be considered a good angle of view.

If you see a really high degree number, like 72 degrees, the manufacturer may be using actual angle of view. This number is reached simply by multiplying the angle of view with the magnification value of the binoculars.

For example: a 10×50 binocular with a 7.2 degree angle of view will have a 72 degree actual angle of view (7.2 x 10 magnification).

what does monocular 6x 50mm mean

What Does Monocular 6x 50mm Mean?

Understanding Field of View

Field of view (FoV) is not expressed in degrees, but in either:

feet per 1,000 yards or

meters per 1,000 meters

Again, a higher number simply means you’ll have a wider horizontal view through the lenses. Typically you can consider a FoV of about 300 to 375 feet as adequate. Remember though that the higher your magnification, the smaller your field of view will be due to the object being brought closer.

Finally, here’s how you convert angle of view to field of view:

Multiply the angle of view by 52.5

So, a 7.2 degree angle of view equals a 378 feet field of view

7.2 x 52.5 = 378

Width of field of view is measured by the manufacturer in feet at 1,000 yards

The width of the field of view is measured in meters at 1,000 meters.

To find out what this number is, just multiply the FOV by 0.0393701 inches.

Here’s an example:

10×50 binoculars with a 7.2 angle of view has a 378 foot field of view.

378 x 0.03937 13.9 inches

378 x 3.27 inches

This would equal a width of field of view of 4.35 inches

You can use this information to determine which type of binoculars you need based on the distance you want to travel.


What Is a Monocular Lens?

Single-lens reflex (SLR) digital photography has been around since the 1980s. It was invented by Carl Zeiss to be binocular for hunters. A monocular was called a “one eye” camera because you had only a single lens to focus through.

How Do I Know What Magnification My Camera Has?

To determine whether your digital SLR has an optical zoom function, look for a specification listing the magnification. If there isn’t one, then you’ll need to measure the distance between two images taken at different points along the lens’ focal length using a ruler.

Why Would Someone Use a Monocular?

If you want to take pictures from a distance without having to hold the phone very steady, then a wide angle might be just what you need; it allows you to capture a larger view than a normal one would, so you don’t have to move around as far to take the picture.


We hope that this article was helpful. If you have any queries feel free to reach out in the comments section below.


  • John Moses

    John is the Editor in Chief here at The Outdoor Stores. His area of expertise ensures that there is no one better to suggest which rifles are most suitable for your hunting experience. He is also available for you to contact him personally to discuss the types of animals you want to hunt and the terrain you will be hunting on. Feel free to read his posts for expert opinion on Rifles, Scopes, Rangefinders, Bonoculars and Monoculars.

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