Thermal Optics Buyers Guide

Surely every hunter dreams that his favorite pastime is not only exciting but also comfortable. Fortunately, today, an incredible number of devices and devices are designed to provide the hunter with any assistance in the forest. For example, take a situation when he, going out into the woods, at one moment heard the rustle of an animal near him. Still, it turned out to be quite dark, or poor visibility due to fog prevented him from getting into the animal and even just looking at it. In such cases, you can use devices such as a night vision device (binoculars, monoculars) or a thermal vision device that will help you find the animal in poor visibility at any time of the day. In this article, we will focus on thermal weapon devices, their types, and their advantages.

Thermal Sights - Main Characteristics

Thermal vision devices work on an understandable principle. Almost every object around us is a thermal radiation source and is called infrared. So the thermal device, thanks to the matrix, captures radiation and converts them into a clear picture. The brightness of the glow depends on the object's temperature, so in trees and organisms, it will be different. On the screen, in addition to the picture, other indicators are depicted: time, battery charge, sighting grids, and parameters. Therefore, before buying such devices, be sure to pay attention to important details - the lens, the resolution of the matrix, and the frame rate. They affect the range of observation, segment, and quality of video shooting.

Thermal Optics Buyers Guide - 1

Usually, hunters prefer to use a thermal device in the form of a monocular, which will be quite enough to see the animal. But for perfect shooting, it is probably not suitable, so that you can use another type of thermal vision device.

Thermal Optics Buyers Guide - 2

But the primary type of thermal device is a sight. It also has similarities with the monocular but differs from the sighting reticle, which allows you to aim at the animal quite accurately and mount under the landing base of the weapon.

At first glance, it may seem that the scope is just a type of thermal imaging device consisting of one tube. On the one hand, this is true: the technology is identical, the visualization is practically the same. But, there is one crucial nuance - night vision scopes, in addition to reticles, have increased strength. This means that they successfully withstand the full power of the weapon recoil.

Thermal Optics Buyers Guide - 3

Benefits of thermal sights

It is pretty essential to remember the main benefits of thermal sights, which will be helpful to a successful hunt. What exactly are these criteria? We will now consider.


So, as you know, there are many thermal devices, their manufacturers, and, accordingly, additional characteristic functions. The first criterion on our list will be contrasted. Usually, the thermal sights and scopes produce more than 15,000 gray gradations. Still, the human eye cannot physically perceive all these shades, so the signal of the thermal vision device decreases, but the maximum level of detail is preserved. Obstacles like thick bushes, tall grass, or snow prevent you from seeing the object of interest. Still, it is essential to remember that the thermal vision device does not recognize thermal radiation behind the walls and behind the glass that does not transmit infrared radiation.


The following and a rather important criterion in our list is color modes. They are designed to improve object recognition. The thermal imager provides the best visibility at night and in the year's cold season. At night, the air cools noticeably, which increases the contrast of warm objects. The temperature difference between heat sources and the air becomes more noticeable, making the thing easier to recognize. In summer, the temperature contrast between objects on the ground can be insignificant, so it is more challenging to determine heat sources. For such cases, it is convenient to use color modes.

If we analyze the technology of thermal vision in detail, we must also mention the superpower of such devices. Unlike night visiondevices, which amplify light, a thermal sight captures thermal signatures and visualizes them. It doesn't need light. Weather conditions do not matter either. But, it is worth remembering that even such a fantastic thing becomes useless in situations where heat signatures cannot be registered. For example, when objects are behind glass.

Of course, the scopes of this formation have excellent performance and will be helpful in every hunter. Nevertheless, not always these devices can solve your problems. Therefore, it would not be harmful to have one device of each technology in your arsenal.

How to choose the best thermal vision sight

When choosing a thermal sight, you need to pay attention to the main criteria to serve you for a long time and not let you down at the right time.


So, the first is the resolution of the thermal sight. If your hunt is designed for a small game, the device should have a resolution of 1.1 billion pixels, and for the big game, 2.2 billion.


It is possible to change other lenses on some devices, depending on the surroundings or weather conditions. They allow you to change the viewing angle and visibility range. The wider the viewing angle, the smaller the maximum distance at which the object is visible.


The frame rate is another criterion that determines whether the picture will slow down or hang. We advise you not to take a thermal sight with a frequency of fewer than 30 frames per second for your comfort. Dynamic observation of the device requires at least 60 frames per second. Then the observation will be of high quality and without braking.


Hull protection plays a significant role in the hunt. The device must be protected from moisture and dust. If the safety of the case is good, then the thermal vision device will serve you for a very long time.

Please pay attention to the matrix. It affects the image quality of the picture, the temperature threshold, and the degree of error. If the resolution is high, then the quality of the matrix is better. Nowadays, the most significant expansion of the matrix is 640x480 pixels. And the sensitivity of the thermal should be approximately 0.05-0.08 degrees to be able to see an unmistakable silhouette of the beast.

I hope this info has provided helpful insight on this awesome technology. If you have any questions, please feel free to email at or text me at 412-573-9059