If you qualify for a thermal scope military discount and you have narrowed the field to ATN's 640-class ThOR 6 scopes, the real decision comes down to two models and one question: what does your ground look like? The ATN ThOR 6 640x512 2-16x and the 640x512 3-24x share the same excellent sensor, so this is not about image quality - it is about the terrain you hunt or patrol. This comparison puts the two head to head and tells you which one to mount for close cover versus wide open country.
ATN ThOR 6 2-16x vs 3-24x at a glance
Both scopes use the same 640x512 sensor at NETD ≤15 mK, so they see equally well - the split is optics and reach. Here is how the two line up.
How the ThOR 6 2-16x works in close terrain
The ThOR 6 640x512 2-16x is built to shine where distances are short and the picture changes fast. Its 2x base gives a wider field of view than the 3-24x, meaning you take in more of the scene at once - a real advantage when an animal breaks from cover a few yards off and you need to find it now. The 35 mm lens keeps the front end shorter and the whole optic swings quickly onto a moving target. In thick brush, timber, and around structures, that speed matters more than raw reach.
How the ThOR 6 3-24x works in open terrain
The ThOR 6 640x512 3-24x is the answer to distance. Its 50 mm lens and 24x top magnification stretch detection to 3650 m and, more importantly, let you resolve what a far-off heat signature actually is before you commit. On open fields, cut ag ground, and long shooting lanes, the extra glass turns a distant warm dot into a shape you can identify and range. The trade is a longer front end and a narrower base view, which you feel the moment things get close and fast.
When to choose the 2-16x
Choose the 2-16x if most of your nights happen inside a couple hundred yards: walking fence lines, working timber and creek bottoms, clearing brushy property, or any setting where targets appear close and you need the scope on them instantly. The wider base view and quicker handling are worth more than magnification you would rarely dial up. It is the practical everyday pick for mixed and close ground. One more thing in its favor: the wider base view makes scanning less tiring. You spend most of a night searching, not shooting, and a broader picture means fewer sweeps to cover the same ground and less chance of walking your eyes right past a bedded animal at close range.
When to choose the 3-24x
Choose the 3-24x when distance is the whole challenge - open agricultural fields, desert flats, ridgelines, or overwatch where you must identify before you approach. The longer reach and finer detail at range justify the extra length and slower swing. If you frequently pass on a target because you could not tell what it was at distance, this is the scope that fixes that. Range confidence is the real payoff here. When you can identify a heat signature at distance, you stop wasting nights stalking cattle, dogs, or a warm stump - and you take the shots that count with a clear picture of exactly what is in front of you.
What both scopes share regardless of terrain
Whichever way your ground points you, both ThOR 6 scopes give you the same core toolkit, so you are not trading away features to pick a lens. Each runs the same ≤15 mK sensor, a 50 Hz refresh for smooth tracking of moving game, SharpIR image cleanup, and Recoil Activated Video that saves every shot. Both run about 9 hours on two swappable 18650 cells, so a spare pair covers a full night on either model. That shared foundation is why this really is a terrain decision and nothing more - you will not feel short-changed on the everyday features no matter which lens you mount.
Our recommendation
For the widest range of real terrain, we lead with the ATN ThOR 6 640x512 2-16x as the everyday pick - it handles close and mid-range work with the same 640 clarity and comes onto target faster, which is what most nights demand. Step up to the 3-24x only if your ground is genuinely open and long. Either way you are on ATN's current 640-class sensor. Compare both in the ThOR 6 thermal scope category and confirm your military or first-responder status through ATN's verification program to apply eligible savings.
How we compared them
We judged these two ATN ThOR 6 scopes against the one variable that separates them - terrain - using base field of view and handling speed for close ground, and magnification plus detection range for open ground. Both were held to the same sensor resolution, NETD sensitivity, refresh rate, and battery, so the comparison isolates optics rather than image quality. Only the current 6th-generation line was considered. This is an in-house comparison of ATN's own scopes, not an independent lab review; the honest caveat is that neither is ideal at both extremes, so match the choice to where you actually spend your nights.
Frequently Asked Questions
Is the 2-16x or 3-24x better with a military discount?
Both qualify for the same ATN verified-status savings, so the discount does not favor one. Pick on terrain: the 2-16x for close, brushy, fast work and the 3-24x for open ground where you need to identify targets at distance.
Do the two scopes see equally well?
Yes. Both use the identical 640x512 sensor at NETD ≤15 mK, so raw image sensitivity and clarity are the same. The difference is purely optical - base field of view, maximum magnification, and detection range.
Which has the wider field of view?
The 2-16x, thanks to its 2x base magnification and 35 mm lens. A wider base view lets you scan more of a scene at once and get on close targets faster, which is why it suits brush and timber.
How much farther does the 3-24x reach?
The 3-24x detects out to about 3650 m versus roughly 3100 m for the 2-16x, and its 24x top magnification resolves distant shapes better. The practical gain is positive identification at long range, not just a bigger number.
Are they the same weight?
Both come in around 830 g. The 3-24x carries a larger 50 mm lens and a longer front end, so it balances slightly more forward and swings a touch slower, even though the listed weight is the same.
Can I record shots on both?
Yes. Both include Recoil Activated Video, which senses recoil and automatically saves a clip of the shot, along with built-in Wi-Fi and ATN Connect 6 for reviewing and sharing footage.
Still deciding between reach and handling? If your ground is close and mixed, mount the ATN ThOR 6 640x512 2-16x and enjoy the wider view and faster swing; if it is open and long, the 3-24x is your scope. Either way, browse both on the ThOR 6 thermal scope page, compare the base field of view against the terrain you actually work, and verify your military or first-responder status to see the savings you qualify for. Match the optic to your ground and every night gets easier.
Created: August 10, 2026 · 09:39:32 UTC
