UNCOOLED LONG-WAVE INFRARED LENS NO FURTHER A MYSTERY

I utilised a Sony FE twelve-24mm file/four on an a7 II body transformed to 665nm infrared. This is one of my favored lenses for vast angle with infrared mainly because if performs so properly and covers an ultra wide range. You will get incredibly hot spots with apertures scaled-down than file/8 but with extremely large lenses like this you wouldn�