|
|
 | | Author | |
|
| | Date | |
|
|
|
|
Elliot Puritz |
18:12 11 Jul 12 |
|
|
Elliot Puritz |
18:18 11 Jul 12 |
|
|
chris |
16:10 22 Sep 12 |
|
|
Steve Nicholls |
21:17 23 Jun 12 |
|
|
Steve |
22:04 4 Jun 12 |
|
|
Steve |
21:56 4 Jun 12 |
|
|
Luigi |
19:08 10 May 12 |
|
  |
Re: characteristic film curve in Plotter |
|
David Jade |
19:03 11 May 12 |
 |
I'm not sure I fully understand your question but I'll try to answer. The x-axis represents exposure, as plotted from the step tablet density values used in the test. The y-axis represents measured density of the tested film.
If you're talking about the various calculated markers on the x-axis (Emin, Emax, and the speed point) then that gets more complicated. Emin/EMax is pretty simple - it is based on the PaperES, relative to the speed point for the curve. The speed point is quite a bit more complicated. It is based on first finding the speed point of a curve with an average G of roughly 0.62 and then using that point on the x-axis to calculate the relative speed point for each of the other curves.
David
|
|
|
|
|
|
|
|
|
Luigi |
20:09 11 May 12 |
|
|
Raphael |
9:10 11 Apr 12 |
|
