I've sat on the fence long enough, the splinters are killing me ;)
I would like 1 set of the calibration lights please. I'm not sure just what info you need from me when, so if you would be so kind as to PM me I'll put things into the proper sequence.
And, thank you so very much for your time, effort, generosity, and floating the cost of these lights so that we can have in our hands TWO true calibration devices. This is so amazing!! :)
I’m jumping off the list for now. When I get back from my vacation I prefer to send you some of my own for calibration, just gotta hope you still offer that service when I’m back. I do not want anything on order from anywhere to anywhere while I’m away, piece of mind is worth a lot. Remove me from the list.
Here we go with the math again.(Steel’s lights)I took Maukkas readings at 30 sec.
So we got 35 and 34.1 which is somewhere around .972. (so if 40 is the reading-38.88)
And we got 98 and 94.5 which is somewhere around .965. (so if the reading is 485-468.02)
Now, since we have a difference should we average the .972 and .965? ( .968.5 )
We get up into the higher numbers with the S2 and the number goes smaller ,say .945 do we just average all numbers or just the two calibrated lights we have?
Sorry to be so dumb about this. Math is not my forte’.
Since the lux meter is probably not filtered perfectly I would use different correction factors for different types of lights. Check out djozz’s great lux meter tests for more info. Test1, test2, test3, test4, test5.
I just yesterday found out that my most used integrating sphere warms up the spectrum by a few hundred K, maybe I should use a cheaper luxmeter to compensate for that :party:
I have a new Extech LT45 luxmeter (to be tested together with some other new luxmeters) that because of the imperfect spectrum sensitivity has pre-sets for different light tints, which is about the same what you suggest here.