Timeline for Difference between Spectral Sensitivity and Spectral Dye Density, and how are they linked?
Current License: CC BY-SA 4.0
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| Nov 7, 2023 at 12:20 | history | edited | srb633 | CC BY-SA 4.0 |
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| Oct 30, 2023 at 10:04 | comment | added | srb633 | Spectral sensitivity is measuring how much irradiance is required to produce a particular Status M density, this is a response since it relates scene light to resolved densities after development. But the spectral dye density curves do not tell you anything about the film's response to light, it simply describes the spectral absorption properties of the dyes used for the film post development. Kodak publishes spectral dye density curves because they are typically useful for optimising scanners and printers. The spectral dye density curves do not refer to the degree of developed dye. | |
| Oct 30, 2023 at 9:48 | comment | added | vannira | I thought spectral dye density refers to the degree of developed (density) colored dye on the film, due to the reaction of the colour couplers and the oxidised developer. I may have misread something. I would also like to ask if you perhaps have a link to all the stuff you mentioned in your answer above as it all seems very interesting, but for me like a lot to learn just from a singular reply. Thank you for your previous replies | |
| Oct 30, 2023 at 9:43 | comment | added | vannira | if spectral dye density denotes the spectral absorbance per wavelength per day layer of the film. How does that that differ to the spectral sensitivity of the film. I read the spectral sensitivity of the film shows the color gamut as it represents the range of colors that can be captured. So from those two definitions, they seem to be measuring the same thing, the spectral absorbance, although one has a y axis of log sensitivity (which Im assuming is tightly related to density) and the other with density on the y axis. So I am a bit confused. | |
| Oct 30, 2023 at 9:17 | history | edited | srb633 | CC BY-SA 4.0 |
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| Oct 29, 2023 at 18:10 | history | edited | srb633 | CC BY-SA 4.0 |
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| Oct 29, 2023 at 18:04 | history | edited | srb633 | CC BY-SA 4.0 |
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| Oct 29, 2023 at 17:58 | history | edited | srb633 | CC BY-SA 4.0 |
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| Oct 29, 2023 at 17:53 | history | edited | srb633 | CC BY-SA 4.0 |
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| Oct 29, 2023 at 17:47 | history | edited | srb633 | CC BY-SA 4.0 |
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| Oct 29, 2023 at 17:41 | history | answered | srb633 | CC BY-SA 4.0 |