Does thermal imaging work in complete darkness?

Yes. Thermal imaging detects infrared radiation rather than depending on visible illumination. Image quality still depends on thermal contrast, weather, focus, optics, detector performance, and processing.

Can a thermal scope see through walls or trees?

No. Solid objects block the infrared radiation coming from whatever is behind them. Thermal imaging may show surface temperatures or exposed parts of a subject through gaps, but it does not see through solid cover.

Is 640×512 always better than 384×288?

It provides more native thermal pixels, but that does not automatically make every 640×512 product better for every use. Lens design, field of view, NETD, focus, processing, size, weight, power, and price also matter.

Is a lower NETD always better?

A lower NETD indicates greater thermal sensitivity under the stated test conditions, but NETD alone does not determine total image quality. It should be evaluated together with the detector, optics, focus, processing, display, and environmental conditions.

Is thermal imaging better than digital night vision?

Not universally. Thermal imaging is strong at highlighting temperature differences, while digital night vision can provide more familiar visible scene detail when adequate illumination is available. The better choice depends on what information the user needs.

What should a beginner look at first when comparing thermal scopes?

Start with typical distance and terrain, then compare field of view, base magnification, detector resolution, lens configuration, NETD, size, weight, and power. Optional features such as LRF, recording, and connectivity should come after those fundamentals.

Thermal Imaging for Beginners: Practical Guide