What You Need to Know About Rifle Scope Objective Lens Diameter

What You Need to Know About Rifle Scope Objective Lens Diameter

How important is the rifle scope objective lens diameter? Read on to learn more about the objective lens diameter and how it affects your rifle scope.

When you are choosing a new rifle scope, you have to consider many things before you make your choice. You need to make sure that you are getting a durable and rugged scope that is built to last, one that has a quality turret system, and that has excellent optics. You will also likely want to know about the rifle scope objective lens diameter.

The objective lens diameter is often one of the first things that people look at when they are considering a new scope for their rifle. People want to know the overall size of the objective lens, and they want to know just how important it might be when they are hunting.

Below, we will be taking a closer look at rifle scope lens diameter to get a better understanding of what it is, why it can be important, and what diameter you might need. We will also be discussing two quality rifle scopes that might work well for your next scope.

Where is the Objective Lens Located on a Scope?

The objective lens is the lens that is furthest from your eye when you are looking through a scope. The objective lens is housed in the objective bell, which is simply a term used for this part of the housing.

The ocular lens is the lens through which you are looking. The scope features an erector tube, which is the body of the scope and which houses the reticle. Scopes will also have a turret system that includes adjustment knobs for elevation and windage, while some also have a side knob for parallax adjustment.

What Do the Numbers Mean When Looking at Scopes?

When you see scopes on the market, you will notice that they typically have a set of numbers associated with them. For example, you might be comparing two scopes. One is 3-9×40 and another might be 10-60×52. The first set of numbers refers to the magnification of the scope.

A 3x to 9x scope will have a variable magnification from 3x to 9x the power of the naked eye. It’s the second number that that provides you with the objective lens diameter. This would be 40 or 52 in the examples above. It refers to the size in millimeters. The objective lens is larger than the rest of the scope in most cases.

They are larger to allow more outside light to pass into the scope, which can produce a brighter image for you in the sight picture. One of the myths that you want to have dispelled now is that having a larger objective lens does not mean that you will have a wider field of view.