qumefox
0
- Joined
- Mar 26, 2010
- Messages
- 3,220
- Points
- 0
in that case, this would be totally incorrect?
Beam: (445nm 1000mw) vs. (445nm 4000mw)
(maybe thats why all the 1W 445's on YouTube is brighter than 200mw greens :/)
Actually I think you just discovered a rather serious flaw in RHD's calculator.. It doesn't take into consideration that brightness changes across powers aren't linear.
FOund this thread on PL on the subject. It doesn't have the data in it, but it does say who to ask about it.
http://www.photonlexicon.com/forums...-some-helping-explaining-power-vs.-brightness
I also notice that that calculator doesn't agree with chroma on equivalent brightnesses. RHD's calculator says 1W of 532nm is equal to just under 30W of 445, where as chroma shows it as 20W of 445 as having the equivalent brightness.
So I think there is some math missing somewhere.
Last edited: