NOT KNOWN DETAILS ABOUT UNCOOLED LWIR LENS

I employed a Sony FE 12-24mm f/four on an a7 II overall body transformed to 665nm infrared. This is among my favored lenses for extensive angle with infrared for the reason that if performs so well and covers an extremely wide range. You can get warm spots with apertures smaller than file/eight but with ultra large lenses like this you wouldn’t w