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Resolution is a critical factor in thermal cameras that affects both the level of detail in the image and the camera`s ability to detect small temperature variations. A higher resolution provides clearer, more detailed images, which are essential for precision tasks like inspecting electrical systems, detecting leaks, or identifying heat signatures from a distance. However, higher resolution comes at a cost, both in terms of price and processing power, so it`s important to choose a thermal camera with the appropriate resolution based on your specific needs and application.