With Londero Sportys, Explore our selection of hunting and shooting optics, from scopes, rangefinders to binoculars.

Today, professionals offer us a multitude of sight glasses, scopes and binoculars. But how can brands justify such price differences? A few tips to get a clear overview! In order to guide you as well as possible in the purchase of a scope, it is important to know these few technical points:


The zoom of the scope:

The zoom corresponds to the first value of the scope.
For example: For a 4×32 scope, the number 4 corresponds to the zoom ratio while the number 32 refers to the diameter of the target lens.
Another example: if the values displayed are: 2-7×32, the zoom of the scope varies between 2 and 7 depending on the setting and the diameter of the objective lens is 32mm.

The diameter of the lens:

As mentioned above, the second value corresponds to the diameter of the lens. The higher this value is, the wider the field and the scope of the light will be. A large diameter lens will transmit more light rays.


The brightness index:

The price difference of a telescope depends mainly on its manufacturing quality and therefore on its components. The lens of the scope represents the main cost. The different treatments of the glass increase the light transmission. For example, very good quality sight glasses can be brighter than entry-level glasses even if their diameter is smaller.
However, a simple calculation allows you to determine the twilight index of your scope. This value can be a reference if you use your bezel in low light. The twilight index (CI) is calculated by multiplying the square root of the enlargement by the diameter of the lens.
Example: A 4×32 scopes will have an IC = 11.31
The higher this value, the more likely your scope will be bright in low-light periods.

Be careful, this remains a value and does not reflect the quality of your scope. Other factors come into play such as transmission, reflection reduction, definition quality, etc.

For each hunting mode there is a scope:

For the hunting in beat: Two options are available to you according to your hunting mode. If you have very short shooting distances, it is recommended to use a scope with a minimum enlargement of 1, which will allow you to have a wide enough field of vision to react quickly. On the other hand, if you hunt by hunt and you do not necessarily shoot from a short distance, we recommend a more versatile scope in 1.5-6×42 for example.

For hunting on the watch or approach: the shooting conditions will be different from those of hunting by hunt. Generally, the shots will be fired early in the morning or late in the evening when the brightness index is low. The twilight index will be one of the criteria of choice for your scope. The second important point is your shooting distance, we recommend a sight with a zoom of 6 to 9 and an optical diameter of at least 42mm.


Explore our selection of hunting and target shooting optics, including scopes, rangefinders and binoculars, Tactical Gear, Riflescopes, shooting optic kits, Action Cameras, night vision and more. Shop at Londero Sports online Canada store and get your delivery until your door.

Click here: https://www.londerosports.com/optical