I thought I did make an intro post? And I'm not too interested in borrowing equipment. It seems like it would be less of a hassle to just save up for a while and buy one outright.

And on the original topic, I made this to try and get more accurate values.

View attachment 64965
key:

r = relative beam brightness of wavelength 1 vs wavelength 2,

V' = scotopic weighting function, V = photopic weighting function, x = luminance-based weighting factor

The equation was made using these sources:

https://en.wikipedia.org/wiki/Mesopic_vision https://en.wikipedia.org/wiki/Rayleigh_scattering
Assuming the luminance of the area is 0.1 cd/m2 (A bit darker then the minimum residential streetlights need to provide) and an x value of .3, a 532nm beam would be 104x brighter then a 660nm beam, and 24.9x brighter then a 405nm beam.

In other words, these lasers would have a similar beam brightness:

5mw 532nm, 521mw 660nm, 124mw 405nm

Those values seems closer to my personal observations then the calculator's answer.

note: I was aware of luminosity functions and Rayleigh scattering before asking asking the original question, but asking for personal experiences seemed like the more direct route.