I can't find any source that puts the dynamic range of the human eye at 30 stops. The most i found was around 20. But camera apertures are often as low as f1.8

I can't find any source that puts the dynamic range of the human eye at 30 stops. The most i found was around 20. But camera apertures are often as low as f1.8 where the human eye is probably 2.5 to 3.5 at the lowest.