Quote Originally Posted by Daniel Browning
5D2 6.4 microns vs LX3 2 microns using signal of 1 * N.

6.4um S/N = 23.5:23.5 (1:1)

2um scale factor = (6.4/2.0)^2 = 10.24

2um S = 23.5/10.24 = 2.2949

2um N = 5.6

2um S/N = 2.2949:5.6

2um resampled S = 2.30*10.24 = 23.5

2um resampled N = sqrt(5.6^2 * 10.24) = 17.92

2um resampled S/N = 23.5:17.92 = 1.31:1

You know, Daniel, I'm pretty good at math, but I don't really get a couple of passages -maybe out of inexperience in the field- could you please send me -via email if you prefer (i'll send you my address)- all the calculation with a legend of the symbols and everything written out plainly? by which I mean: "um = micrometers" (in reality the "u" should be the greek letter mu) and for example the explanation why S/N of the 5DII is taken to be 1:1


I'm not questioning your results, I totally agree with you...it's just a matter of understanding the calculations


Thanks,
ANdy