This thermal comparison was fun. We lined up three (3) different thermal scanners and two (2) thermal rifle scopes. The thermal devices lined up - Night Tech HD-25 Lite (19mm lens), Night Tech XD-35 (25mm lens), IRAY XEYE E3Max (35mm lens), Thermion XQ50 (42mm lens) and a PARD SA45 (45mm lens). All the thermals have a 384x288 17um sensor. Cost values range from roughly $1600 through to $6000 per unit. It's a common question on what is the best value thermal or what is the difference between a XX and XX device. Running a comparison between 5 different lens sizes was quite interesting to see and it's a good gauge of performance. Larger the lens, the more detection range (AKA power). But also the larger lens increases the base magnification. I wouldn't call this a "thermal review", more just out thoughts as general punters out using this kit weekly. There's little bias in the products used, it's just what we own and use.
Huge thanks to Adam and Eric for bringing a few of them thermals we played with. This kind of thing doesn't happen without great mates helping out too.