Originally Posted by
kecked
That's why I mentioned the eye magic gizmo. I have one but never ever powered it up as green diodes showed up at the same time. With that it does make the output linear and may well do the logarithmic curve too not sure. Point is with such a feedback system you could tune a laser by determining its curve and then applying a correction curve. Sort of exactly like an audio system eq sweep with auto eq compensation for the room. Hey there you go use the same device to measure a venue for beam safety.
If all you want to do is measure the curve of each diode and save the result, you don't need much other than a detector and a way to store the data and a way to make an accurate voltage. I guess you could do it by hand with a volt meter, a solar cell, and a beam splitter. That cuz you saturate the solar cell pretty quick. Think I'll try this out. What to do with the data I'm not sure.
What I'd like is to be able to use colors just above loading threshold for really suble shadow effects to try and make 3d like perspectives like done in pencil drawings. Having this accuracy would be important to this. Having more than 256 step from 8 bit would help too. Can't be that hard these days to do even 24 bit. Think of the subtleties you could do in abstracts. I think with a capital stupid you might be even be able to fix the ugly yellow from 515nm green but maybe that's inherent in the color curve of those nm mixes.