What bin/wavelength is "true" cyan for you?

[Canuke]

Over in the Dealer section, an old thread from PhotonFanatic has resurfaced, where he announced the purchase of a reel of Q2H "true cyan" LuxI emitters.

Q2H bins come in between 495-500nm according to the Lumileds PDF file. However, I have a Q2H Fenix from 4sevens, and its color just looks like "traffic light green" to me, if perhaps just a touch on the blue side of it -- this based on direct comparisons to actual traffic lights (in Los Angeles).

On the other hand, PhotonFanatic has some Q6JB Blue stars (485-490nm) that I have ordered, that to *my* eye are a gorgeous shade of true cyan color. They are the same color as the original Mr. Bulk "Eye Cryin' Cyan" Lux V that I purchased from Sigman last year. (For those who were at the Los Angeles Flashapalooza, that's the light I was waving around.)

So, where does "traffic light green" turn into "true cyan" for you?

 

[IsaacHayes]

485-490 argon laser cyan!!

You got your bins a little messed up in the poll but I know what you mean. Also keep in mind that whatever the led (lux1 or lux3) that the colors are binned at rated current. That means a Q2HC Lux1 is bin 2 at 350ma. And a S2KC Lux3 is at 700ma. So in theory you could run the lux1 to 700ma and it would shift more like a bin 1...

Cyan to me is the argon laser color, same color on printing CYMK. It's that sky blue aqua sorta color.

 

[Canuke]

485-490 argon laser cyan!!

You got your bins a little messed up in the poll but I know what you mean. Also keep in mind that whatever the led (lux1 or lux3) that the colors are binned at rated current. That means a Q2HC Lux1 is bin 2 at 350ma. And a S2KC Lux3 is at 700ma. So in theory you could run the lux1 to 700ma and it would shift more like a bin 1...

Cyan to me is the argon laser color, same color on printing CYMK. It's that sky blue aqua sorta color.

I've wondered about the color of those 488nm argon lasers, thanks for the feedback.

I'm suspecting that this particular area of the spectrum is the most senstive to slight wavelength variations, and is likely the area where individual color perception in otherwise normal trichromats varies the most; hence the poll. There is a fellow in the Lasers forum who has one of the 488nm argons, who uses it as "blue" in an RGB setup. To me, it wouldn't be satisfactory in that regard; I'm thinking that my best gamut RGB triad would involve royal blue around 440-450nm.

You are right about the binning, I should have recognized that "H" was a Vf code

 

[Theatre Booth Guy]

Recently, I got a Peak Pacific with one of the "traffic light green" led's. Mine is much too green to actually be cyan but it's still a fun light to play with. The best cyan I've seen in person is the Rigel Systems Starlite. Maybe someday, true cyan will be easier to get?