Armasight thermal imaging rifle scopes are some of the most state-of-the-art night vision scopes available to serious hunters, law enforcement officials, and those in private security.
Their line of Zeus thermal imagers is particularly worth considering if you’re looking for something durable, high-performing, and designed with price in mind.
In this Armasight Zeus review, we’ll examine the standard line of Zeus riflescopes, which join the company’s Predator line of thermal imaging scopes (which includes the Armasight Zeus 2, Armasight Zeus 3, the now discontinued Armasight Zeus 4, and the Armasight Zeus 5).
We’ll also take a look at the Armasight Zeus-Pro Line. This one takes the Zeus to a new level of performance and ruggedness. It combines state-of-the-art mobile applications that afford it a level of functionality that will get you through the most challenging tactical situations. You’ll only need to worry about deciding which of these bad boys to purchase.
Armasight Zeus Thermal Imaging Scopes
The Zeus line of thermal imagers provides a high level of versatility, as they are specifically designed to function as a night vision rifle scope.
They are also used in various collateral roles, such as standard day scope, handheld spotting scope, and handheld thermal imaging device.
Quick-release Picatinny mount allows you to convert this imager easily from riflescope to handheld device and back again.
This line utilizes the most advanced FLIR Tau 2 technology available and can cut through dust, fog, snow, and other obscurants to provide you with a clear view of what’s out there.
The Zeus is unlike other inferior night vision technologies, which may use near-infrared and laser sights to enhance the night vision capabilities. This thermal imaging is nearly impossible to detect with other devices. This enables you an extra degree of stealth so you can get in there and get the job done while remaining undetected.
Armasight Zeus Standard Features
The Zeus is available in 336×256 and 640×512 pixel array formats. From there, you can choose between magnification ranges of 3-12x and 5-20x for the 336.
For the 640, the available magnification ranges are 2-16x and 3-24x. For both pixel formats, the smaller magnification range has a 42mm objective lens. The larger range has a lens size of 75mm.
Below, we’ll look at the smaller and larger versions of the standard Zeus thermal imagers.
| ZEUS 336 3-12X | ZEUS 336 5-20X | ZEUS 640 2-16X | ZEUS 640 3-24X | |
|---|---|---|---|---|
 |  |  |  | |
| Objective Lens | 42mm | 75mm | 42mm | 75mm |
| Size | 7.6” x 2.7” x 3.1” | 8.4” x 2.7” x 3.1” | 7.6” x 2.7” x 3.1” | 8.4” x 2.7” x 3.1” |
| Weight | 1.5lbs | 1.8lbs | 1.5lbs | 1.8lbs |
Armasight Zeus 336 and Armasight Zeus 640
The Armasight Zeus 336 and 640 use a unique layering menu system in combination with direct button controls. This allows you to customize the settings to your preference.
You can quickly and intuitively navigate the controls and take advantage of the full range of robust features. Wireless remote makes for even more convenient operation.
Electronic zoom allows you to move between 1x, 2x, 4x, and 8x magnification without the need to re-zero as the point-of-impact will not change.
This provides you with an exceptional level of accuracy not only further enhanced via the software algorithms, four color choice reticles, and choice of six reticle patterns.
It also allows for digital video recording and output. With the output, there are options for either NTSC or PAL formats. The Zeus also allows for video-in display, in cases where the need for rangefinder or map overlay is necessary.
Armasight Zeus 336 3-12X 42mm
While this is the most affordable of all of the Armasight Zeus riflescopes, the Armasight Zeus 336 3-12x still has all the standard features that make this line of thermal imagers your go-to choice when high performance and dependability matter most.
Weighing just a pound and a half and measuring 7.6 inches by 2.7 inches by 3.1 inches, this is a lightweight and compact choice. Furthermore, this is ideal for tactical environments and when you need the most maneuverability.
Frequently called the Armasight Zeus 3, this particular imager has a magnification of 3-12x, as well as the electronic zoom of 1x, 2x, 4x, and 8x. It has an objective lens size of 42mm. It is these features that contribute to it being the lightest and most compact of the Zeus scopes.
Armasight Zeus 640 3-24X 75mm
The Armasight Zeus 640 3-24x is the largest Zeus 640 available. It has a magnification range of 3 to 24x and an extra-large 75mm germanium objective lens.
This furthermore provides you the greatest level of visibility and image quality of the standard Zeus line.
Given the larger magnification range and objective lens size, this thermal imaging scope weighs more and is larger in size, too.
At 1.8 pounds and measuring 8.4 inches by 2.7 inches by 3.1 inches it still won’t weigh you down or prove unmanageable in the field. However, this is a slight difference of which to be aware.
Armasight Zeus PRO Thermal Weapon Sights
If the standard line of Armasight Zeus thermal scopes just isn’t quite badass enough for you, then the Armasight Zeus Pro Series is what you’re looking for. It takes the same great standard features but kicks up the performance and durability to a whole new level.
It has an additional functionality with Bluetooth capability. The Pro Series is specifically designed for those of who you who can’t settle for anything less than the best.
To start, they’re built around Armasight’s 20/50 gold standard. This means that they can be fully immersed in water up to 20 meters deep for up to 2 hours without needing anything more than to dry off. It also means that the Zeus Pro thermal imagers can withstand 0.50BMG shock and recoil on a regular basis.
Finally, a piece of equipment that not only performs but will be there with you step by step, regardless of what situations you may find yourself facing.
The Pro Series is built around the same state-of-the-art FLIR TAU2 technology and uses the same fantastic geranium objective lenses. Besides a blatantly more kick-ass level of performance, the Pro Series also offers greater versatility when it comes to power.
Additionally, this makes it easier to keep your scope in continuous operation if need be. It can run on either four AA batteries loaded into a cartridge, four 123A batteries (which all load facing the same direction to eliminate confusion), a single 123A battery that will last for one hour, and an external battery pack which can be attached to the rail mount.
That external battery pack can come in handy quite quickly if using your Pro as a handheld thermal imager. In that collateral role, there is also available a multispectral laser, laser range finder, and other accessories. These are also great if you’re taking advantage of the video-out or video-in capabilities.
Armasight Zeus Pro Standard Features
But what really sets the Pro apart is its built-in Bluetooth capability that enables you to integrate your phone seamlessly with a free mobile application. Furthermore, this provides you access to a wide range of additional information, such as geo-coordinates and a shot counter.
It also allows you to use your smartphone in place of the wireless remote and to take advantage of satellite and terrain maps and up-to-date weather information.
Armasight Zeus Mobile App Features
The Zeus Pro Series is available in 336×256 and 640×512 pixel formats. There is a choice of three magnification ranges for the 336 and two for the 640.
Each magnification range also has a differing sized objective lens and may be available in a choice of refresh rate frequency. Just below, we’ll give you an idea of what to expect with the smaller and larger models of the Zeus Pro series.
| ZEUS PRO 336 2-8X | ZEUS PRO 336 4-16X | ZEUS PRO 336 8-32X | ZEUS PRO 640 2-16X | ZEUS PRO 640 4-32X | |
|---|---|---|---|---|---|
 |  |  |  |  | |
| Objective Lens | 30mm | 50mm | 100mm | 50mm | 100mm |
| Size | 6.7” x 3” x 3” | 7.5” x 3” x 3” | 10.4” x 3.5” x 3.9” | 7.5” x 3” x 3” | 10.4” x 3.5” x 3.9” |
| Weight | 1.5lbs | 2lbs | 2.9lbs | 2lbs | 2.9lbs |
| Refresh Rate | 60Hz | 30Hz or 60Hz | 30Hz or 60Hz | 30Hz or 60Hz | 30Hz or 60Hz |
Armasight Zeus Pro 336 2-8X 30mm
The smallest size of all of the Pro riflescopes, the Armasight Zeus Pro 336 2-8x thermal imager provides you with all of the excellent features that the Pro Series has to offer. The best thing is it’s in that compact and lightweight size of the standard Zeus series and has a comparable price range.
The smaller size does take the minimal focusing range out to a distance of 10 meters. But, from there, you’ll be able to cut through haze, smoke, rain, fog, and other obscurants to get a clear idea of what’s in the area with infinite ideal visibility.
It has a digital display of 800×600 pixels.
Armasight Zeus Pro 640 4-32X 100mm 30hz
The Armasight Zeus Pro-640 4-32x is as good as it gets! This imager does not only come with all of the standard features and mobile app integration. This also comes with the strongest magnification capability and an enormous objective lens of 100mm.
With this thermal imager mounted to your trusty AR or firmly held in hand, you’ll be able to see everything in the area from a distance of 5 meters to infinity. This is a beast of scope in attitude and size as it measures just over 10 inches long and weighs nearly 3 pounds.
If you’re thinking about picking up one of the Zeus Pro thermal imagers specifically for handheld use, this bad boy should be your first choice.
Final Thoughts on Armasight Zeus Review 2025
The Armasight Zeus thermal imagers provide a remarkable versatility that enables you to use them as a riflescope, spotting scope, and handheld thermal imager.
But, with that versatility in use comes an incredible range of functionality. This is thanks to the state-of-the-art FLIR Tau2 technology, heavy-duty construction of aircraft aluminum, and thoughtful attention to details.
The Zeus standard line of scopes is a great starting point if you need something rugged and dependable by your side. Should you find yourself in more demanding situations, the Zeus Pro has everything that the Zeus standard line provides.
Like we said, it also has exceptional durability, a greater range of standard features, and integration with free mobile applications that allow you a greater range of features via your smartphone.
In conclusion to this Armasight Zeus review, these are top of the line thermal imagers built with price and usability in mind for discerning professionals who need dependable equipment.
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