0.0002 fL to 15000 fL 0.0002 fL @ Signal to Noise Ratio > 10, 20 seconds exposure 0.001 fL @ Signal to Noise Ratio > 10, 0.5 second exposure 0.001 fL @ Signal to Noise Ratio > 100, 20 seconds exposure 1500 fL @ Signal to Noise Ratio > 8000, 1 millisecond exposure