I had extracted my ProBack spectras tonight and they are rubbish. The first attempt went astray so I will need to redo it. I'd need to correct a few things as well:
- I need to invent something to connect camera to integrating sphere more tightly to prevent even slightest leaks
...
Finally managed to get all the parts and get a more secure connection camera-to-integrating sphere. Did another run of taking readings for the cameras I have at 5nm steps. Results are below.
I used Kodak ProBack 645 and Kodak SLR/n. ProBack was used without IR filter (transmittance of several IR filters measured separately so usage of them can be simulated). Both cameras were used in the mode where they are taking dark shot aftre exposure ans subtract it to reduce the noise (SLR/n uses temperature weighted subtraction).
The SLR/n spectral responses are closely repeating the shape published in the sensor documentation but are more smooth. I managed to build very decent matrix profile with them in dcamprof using only CC24.
The ProBack spectral responses however did came out quite jagged at first but sampling different areas of raw file produced smoother spectra.
All the spectral data in the form of CSV files and JSON files (for dcamprof usage) could
be downloaded here.
Spectral responses of Kodak SLR/n:
Spectral responses of Kodak ProBack 645 + Kodak IR filter:
Spectral responses of Kodak ProBack 645 + KnightOptics IR filter (it allows a bit more red but within Kodak IR filter specs):