384 vs 640 Thermal Resolution: What the Upgrade | Karoo Outdoor

384 vs 640 Thermal Resolution: What the Upgrade Changes in the Field is a practical South African guide built around the questions buyers and field users actually ask.

Quick answer: Compare like-for-like examples and explain where lens size, pixel pitch, NETD and display quality change the result.

Start with the real use case

Define the task, realistic distance, terrain and user before comparing specifications. The strongest option is the one that remains safe, repeatable and practical in the field.

The comparison points that matter

• 384 vs 640 thermal resolution - compare current specifications, fit, support and intended use rather than relying on a single marketing claim.
• thermal sensor resolution comparison - compare current specifications, fit, support and intended use rather than relying on a single marketing claim.
• 640 thermal scope advantage - compare current specifications, fit, support and intended use rather than relying on a single marketing claim.
• 384 thermal scope value - compare current specifications, fit, support and intended use rather than relying on a single marketing claim.
• thermal identification distance - compare current specifications, fit, support and intended use rather than relying on a single marketing claim.
• thermal pixel pitch explained - compare current specifications, fit, support and intended use rather than relying on a single marketing claim.

South African field conditions

Dust, heat, cold mornings, humidity and long distances between charging points expose weak preparation. Test batteries, mounting, focus, controls and protective equipment before departure.

How to build a useful shortlist

1. Confirm the exact task and realistic operating distance.
2. Remove options that fail compatibility, safety or support requirements.
3. Compare the complete system, including mounts, batteries, cases and accessories.
4. Check current availability and manufacturer documentation.
5. Test the chosen setup before relying on it in the field.

Browse relevant Karoo Outdoor products

Frequently asked questions

Is a 640 thermal sensor worth the extra cost?

Is a 640 thermal sensor worth the extra cost depends on the exact equipment, conditions and intended use. Verify the current manufacturer specification, compatibility and safe-use guidance, then test the setup in a controlled environment. For 384 vs 640 thermal resolution, repeatable field performance matters more than one headline number.

How does resolution affect digital zoom?

How does resolution affect digital zoom depends on the exact equipment, conditions and intended use. Verify the current manufacturer specification, compatibility and safe-use guidance, then test the setup in a controlled environment. For 384 vs 640 thermal resolution, repeatable field performance matters more than one headline number.

Does a 384 sensor work for hunting?

Does a 384 sensor work for hunting depends on the exact equipment, conditions and intended use. Verify the current manufacturer specification, compatibility and safe-use guidance, then test the setup in a controlled environment. For 384 vs 640 thermal resolution, repeatable field performance matters more than one headline number.

What determines thermal identification distance?

What determines thermal identification distance depends on the exact equipment, conditions and intended use. Verify the current manufacturer specification, compatibility and safe-use guidance, then test the setup in a controlled environment. For 384 vs 640 thermal resolution, repeatable field performance matters more than one headline number.

Is pixel pitch the same as resolution?

Is pixel pitch the same as resolution depends on the exact equipment, conditions and intended use. Verify the current manufacturer specification, compatibility and safe-use guidance, then test the setup in a controlled environment. For 384 vs 640 thermal resolution, repeatable field performance matters more than one headline number.

Should a first-time buyer choose 384 or 640?

Should a first-time buyer choose 384 or 640 depends on the exact equipment, conditions and intended use. Verify the current manufacturer specification, compatibility and safe-use guidance, then test the setup in a controlled environment. For 384 vs 640 thermal resolution, repeatable field performance matters more than one headline number.

Final check

Confirm the current product page, manufacturer instructions and any applicable range, landowner or legal requirements before purchase or use.

Catalogue references checked on 3 September 2026. Specifications, pricing and availability can change.