When shopping for thermal imaging scopes , one common question shooters and hunters experience is whether upgrading to a higher-resolution 640×512 sensor is worth the additional cost. The AGM Adder TS35-384 3x Thermal Scope has been garnering a reputation for combining performance, reliability, and price. But how does it stack up against 640×512 thermal scopes, and what kind of performance difference can you expect in the night vision sector? How to Define Thermal Resolution? Thermal resolution can determine how many individual heat pixels (detector elements) the sensor can capture. A 384×288 detector like the one in the AGM Adder TS35-384 contains around 110,000 pixels. A 640×512 detector has over 327,000 pixels, which is nearly three times more detail. On paper, this means a higher-resolution sensor can generate smoother images with greater definition when zooming in on small or distant heat signatures. However, resolution is a factor. The size of the detector’s pixel...