Sightmark SM18008 Photon XT 4.6 Night Vision Riflescope

Sightmark SM18008 Photon XT 4.6 Digital Night Vision Riflescope

The art optics can make your hunting adventures more thriller hence you can hunt like a nighttime predator. Sightmark SM18008 Photon XT allows you to see objects, animals and landscapes in the dark environments. But the upgraded Sightamark SM18008 device is not easy for the hunters.

The device is designed for the professional trackers or the person manages nature reserves. Some animals will come only at nighttime hence the device provides you more advantages than the regular day scope.

Sightmark SM18008 is a night vision device that has an integrated infrared illuminator. This will be explained shortly in the Sightmark Photon XT 4.6 review. Before explaining what the Sightmark SM18008 can provide, let’s see about the manufacturer.

About Brand

The founders of the Sightmark has a wonderful growth in hunting, modern shooting and optic technology in the market. They planned to produce an advanced device for professionals and hobbyists in the firearm industry.

Sightmark desired to develop a tool that allows the firearm users to focus their target and make accurate shots. Each device has a unique structure and features for particular roles in the firearm field.

The Sightmark company also produces more accessories for the policeman, professional hunters, and avid hobbyists. This brand is one of the topmost manufacturers and service providers for advanced optics and sights.

Sightmark SM18008 Night Vision Riflescope Review

The Sightmark Photon XT 4.6x42S Digital Night Vision Multiuse Riflescope is one of the Perfect scopes for both day and night shooting also it has a vast amount of options to attach it to your weaver rail mount in seconds. This scope is well-equipped with windage and elevation adjustment as well as six digital reticle options.

Sightmark Night Vision Riflecope

Specifications You Must Know

Type of SensorCMOS SensorField of View7.5 m@100m
Camera Resolution656×492 pixels (EIA)Focusing Distance10m
Display TypeLCD DisplayEye Relief60mm
Resolution640×480 pixelsWeight23.6oz
Magnification4.6xNumber of clicks60/60 (H/V)
Objective Lens Diameter42mmPreloaded Reticles6
Resolution38 lines per mmBattery Life (w/o IR)5hrs
Lens MaterialGlassBattery Life (with I/R)4hrs

If you’re hunting at nighttime, then the digital night vision scope is a perfect choice because the analog night vision scope can be used only in the daytime.

Photon XT 4.6 is one of the excellent products produced by the Sightmark Company. It stands more unique by eliminating the additional accessories attached to the night vision scope. This makes them lighter than the other products.

Night vision scope will be an ideal option always when you selecting the type of optic for your rifle because of their capabilities. It has a vast amount of options to attach with your rifles for the perfect hunting adventures. Most of the digital night scopes can capture the pictures and take videos while the analog devices don’t have these excellent features.


Sensor Resolution

The Sightmark Photon has the CMOS sensor resolution that provides the quality information of the surroundings up to 150-175 yards. You can able to see everything via the optic with the details in day and nighttime.


The Sightmark Photon XT riflescope has a 4.6×42 magnification range that allows you for a wider field-of-view to effectively investigate and get the object. 


Using the 42mm objective lens, you can zoom in and detect the objects, animals, and landscapes from the distances as 150-175 yards.

Display Resolution

Sightmark Photon XT 4.6×42 digital night vision riflescope comes with a high-resolution LCD display that offers 640×480 pixels for the videos. You can view the detailed images of the objects and landscapes using the high-resolution built-in display of the Sightmark Photon XT.

Design and Construction

Sightmark Photon XT 4.6 is a combined night vision riflescope that provides bright and detailed images at the day and darn environments. This Photon XT riflescope is an original combination of the digital riflescope and daylight sight. Basically, it is a monocular that includes the additional features of a combined riflescope.

Design and Construction

The precision and high-resolution camera of this device provide excellent quality of images and great outdoor adventures. This riflescope designed for observing the objects in the twilight or the dark night with the use of CMOS.

The riflescope has dimensions of 5.5 x 2.2 x 2.9 inches and its eye relief has 60mm and the tube is 30mm. The Photon XT is designed with the weatherproof rate of IPX4 hence you can use your scope at any weather conditions.

Built-in IR Illuminator

The Photon XT night vision riflescope is built with the 810nm LED IR illuminator with the equivalent power of 100mW that provides the increased view range at the dark places.

Infrared Illuminator

This IR illuminator allows the light into the infrared spectrum to display the objects in the low light conditions. Most of the night vision devices come with the IR illuminator to show the objects from long-distances at dark places. If you want to see more details, you have to upgrade your IR illuminator.

Reticle Patterns

Reticle Patterns

The Sightmark Photon Riflescope features 6 different white/red/green reticle options so whenever you click, the adjustment scale ring will change the bullet impact by 1 MOA thus it equates to 25 m at 100 meters.

There are 2 duplex reticles which is good for varmint and hog hunting, 2 crossbow reticles which are well compatible with a number of crossbows such as 350, 320,and 370 fps crossbows. One German reticle is made of thick perpendicular lines which makes it easier for shooting even in low light conditions, and one Mil-Dot reticle is perfect for holdovers and rangefinding.

Long Eye Relief

The scope is mainly designed to provide enough space for recoils, most of the scopes are not good in supporting recoil after the shot is taken as a result it can cause a painful cut at the top of eye. Actually the distance between your eye and the rear lens of the scope is 60mm which is adequate.

Digital Windage and Elevation Adjustment System

These features help to improve the accuracy so you don’t need to do complex calculations when sighting with your weapon. Windage is nothing but moving your point of view to left or right, and the elevation means moving the point of view up or down. Both the digital windage and elevation system allows it to be very exact in positioning which means it not only takes the manual work for positioning the rifle.


The Sightmark Photon riflescope has less weight hence it won’t make you tired while carrying this and you can use it on crossbows. The lightweight of this night vision riflescope makes it more popular in the market. It allows you to carry this anywhere you want and shoots anything you like without holding the unnecessary load.

Video Output

The video output device is attached to the riflescope that allows you to capture anything you watch through the device at any time. You can save the recorded videos on your computer or laptops using USB cables. This is the most helpful feature that provides more benefits to you within a single package.

Battery Life

The Sightmark Photon XT riflescope provides up to 5 hours of battery life without the use of IR illuminator. With the IR illuminator, the scope provides 4 hours of life per charge.

What Really Makes The Best Night Vision Scope For The Money?

There are tons of Night vision scopes available in the market but what makes the best one? and what are the factors which really make the best scope for the money? Let’s see one by one

Optical Clarity

The significant factor to consider is the optical clarity, just don’t get the low-quality scopes without knowing the purpose of using it. High-quality glass and application of high-quality coatings of the lens might be very expensive at a manufacturing level. But the best night vision scope for the money should never compromise on precision and accuracy in it’s targeting ability.

Types of Lens Coating

Coated: A single layer on one lens surface.
Fully Coated: A single layer on all air to glass surfaces.
Multicoated: Multiple layers on one lens surface.
Fully Multicoated: Multiple layers on all air to glass surfaces.

Scope Range

Before picking the scope you must know how far away you will be able to sight and shoot the target. The recognition range is completely dependent on the amount of ambient light which can be got from the moon, stars, as well as other light sources. For example a 500 yard recognition range in a full moon can have an 80 yard range while the sky is overcast.

Scope Range
Range of the Scope must be high to reach the target.

How Ergonomic the Scope is?

Some of the important factors to test the ergonomics of the scopes are,

Turret Design – The overall feel and usability of the scope
Weight and Size – Have to Find the balance between optical clarity and a good weight/size
Mounting Flexibility – Does the scope has enough movement to obtain eye relief easily
Ability to fit a standard Mount

So finally all these qualities are available in Sightmark SM18008 Photon XT as it is an extremely versatile scope which delivers a higher magnification.

Comparison Table of Sightmark Night Vision Scopes


PhotonXT 6.5x50L

Photon 6.5x50S

Sightmark XT 4.6x42S

Photon RT 4.5-9x42

Photon RT 6-12x50S







Lens Size






Field of View






Eye Relief






Detection Range

220 yds

164 yds

130 yds

150 yds

300 yds

Battery Type






Frequently Asked Questions

Q: What is the run time of the Photon XT?

A: The Sightmark Photon XT Night vision Scope has a run time of 5 hours without Infrared light, if it is used then the run time might be reduced to 4 hours or less than that. Battery type is 2AA.

Q: What are the camera and display resolutions for this riflescope?

A: This riflescope has a camera resolution of 656 x 492 pixels, also the display resolution of 640 by 480 pixels.

Q: What are the dimensions of this riflescope, and how much does it weigh?

A: The Sightmark Photon XT weighs 23.6 oz and measures 398mm by 75mm by 80mm. This is extremely compact and easy to handle at any situation.


The Sightmark Photon night vision riflescope is designed to give you the greatest accuracy at day and nighttime while hunting. It is more versatile hence you can view the objects then captures the high-quality pictures and videos during the day or night. This provides better convenience during your hunting adventures.

The Sightmark Photon night vision riflescope is best for hog hunting, sighting and tracking and provides more features and comfort for professional hunters and hobbyists. If you’re a professional hunter or an outdoor enthusiast, this is the best riflescope for you in any atmosphere.

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