Zeiss Smart Image Processing
Thermal images are typically dark and have difficulty separating warm temperatures from cool ones, resulting in a low contrast image. You can see this in the "Undesired Image" below. The Zeiss Smart Image Processing (ZSIP) software optimizes the thermal image to improve contrast and distinguishable detail into a "Desired Image".
Color Mode Comparison
All DTI models now have eight available color modes which can be chosen via the menu. Each color mode has advantages over the others, some in contrast, some in lowering eye fatigue, and some in finding the thing you're looking for.
Resolution and Contrast Comparison DTI 3/35 G2 vs. DTI 4/35
The DTI 4/35 has a larger sensor (640x512 vs. 384x288) and a finer pixel pitch (12µm vs. 17µm). The photos below show the difference.