It is a common misconception that the Johnson Criteria is based on pixels on target. Pixels on target is a geometric calculation, that does not take into account atmosphere or diffraction. Consider the difference between two hypothetical boson lenses: one F/1.0 lens and one F/10 lens of the same focal length. Obviously, the detection range will be higher for the F/1.0 lens, yet both will achieve the same pixels on target. The Johnson Criteria is based on "cycles per target" which is different than pixels per target.
Need help finding a lens for your Boson camera? Try our Boson lens selector tool: www.flir.com/oem/lens-selector/
It is a common misconception that the Johnson Criteria is based on pixels on target. Pixels on target is a geometric calculation, that does not take into account atmosphere or diffraction. Consider the difference between two hypothetical boson lenses: one F/1.0 lens and one F/10 lens of the same focal length. Obviously, the detection range will be higher for the F/1.0 lens, yet both will achieve the same pixels on target. The Johnson Criteria is based on "cycles per target" which is different than pixels per target.