CONCEPT IMAGE · NOT THIS MODEL256 / CLASSThe independent thermal optics index
KNOW THE
SENSOR.
NOT THE HYPE.
Thermal optics are complicated. Our job is to make the specifications legible, the choices comparable, and the retailer listings easy to verify. No imaginary hands-on reviews. No made-up prices.
65Linked models
17Brands
0Fake test claims
Original editorial illustration · Not a photograph of a listed model
Start with a question
WHAT MATTERS MOST?
There isn't one number that decides image quality. Use the field guides to understand the tradeoffs.
Verified merchant URLs
EXPLORE THE INDEX
CONCEPT IMAGE · NOT THIS MODEL256 / CLASS
CONCEPT IMAGE · NOT THIS MODEL384 / CLASS
CONCEPT IMAGE · NOT THIS MODEL640 / CLASS
CONCEPT IMAGE · NOT THIS MODEL384 / CLASS
CONCEPT IMAGE · NOT THIS MODELTHERMAL / CLASS
CONCEPT IMAGE · NOT THIS MODEL384 / CLASS* “Class” labels are derived from model naming or listings and are not independent test measurements. Illustration is not a product photo. Prices and stock must be checked at the merchant.
From detector to decision
SEE THE TECH. UNDERSTAND THE LIMITS.
Start with the fundamentals before comparing any retailer listing. Illustrations help explain concepts; they are not controlled sensor tests.
Imaging basicsTHERMAL ISN'T NIGHT VISION.Understand the difference →
Environmental limitsWEATHER CHANGES THE PICTURE.Read the field guide →
Before you compareCHECK WHAT'S VERIFIED.Open the checklist →
Visuals are generated editorial artwork, not real thermal captures, manufacturer product photographs, or evidence of field-tested performance.
Research toolkit
COMPARE UP TO THREE MODELS SIDE BY SIDE.
Focus on verified information; leave missing fields clearly marked.
Clearer answers
THE FIELD GUIDES
Technical reference256 vs 384 vs 640: reading thermal resolution correctly
A higher sensor pixel count is useful, but it is only one part of an imaging system.
Read guide →
Technical referenceNETD explained: why a smaller mK number can matter
Thermal sensitivity is not the same specification as thermal resolution.
Read guide →
Technical referenceField of view vs. magnification: the tradeoff that matters
Why a lens and sensor pairing deserve more attention than a large zoom number.
Read guide →Affiliate transparency: We may earn a commission when a visitor follows a qualifying merchant link and makes a purchase. We do not charge visitors, and we do not claim to have tested equipment that we have not physically tested. Full disclosure.