Originally Posted by saltanar
Chad this is very interesting, please can you explain step by step how to create a custom profile to correct Spyder 5?
I have a eye one spectro so can I use it to do this correction?
The basic procedure may have already been explained in this thread, but I thought I'd share my method of making custom colorspaces to correct for Spyder inaccuracy after autocal. This is very necessary in most instances; with my older Spyder 4, before this correction is applied I'd get anywhere from 3-9 dE2000 at 100% white after autocal depending on the customer's screen material. With my new Spyder 5, the first couple of results have been in the 4-5 dE2000 range.
I developed this procedure using late builds of CalMAN software. Unfortunately, I do not know if the workflow will load and run for everyone depending on your license level and build date. You can use any spectro (facing screen) or a profiled colorimeter (K-10, i1D3, etc). I developed it for use with a pattern generator, though you can adapt it for use with a test disc as long as it has color gamut sweeps in 10% steps. I am giving instructions for making a REC 709 profile; with modification the procedure can be adapted for BT.2020, but I am not going to get into that at this time.
First, do the Spyder autocal. I suggest using the "Quality" setting for gamma steps in the autocal software and using Natural mode in the PJ with all enhancements off, color profile standard (off), gamma normal, lamp power low, lens aperture manual, input level auto, controls at 0, etc.
After it is complete, switch to a fresh user memory. Set EVERYTHING (including aperture, lamp power, CMD, etc) to how you had Natural set except select a fresh Custom (off) slot for color profile.
Using my custom workflow (use the LATEST version posted here and in Spectracal's support forum under the workflows section), click the adv (Advanced) button on the lower right of the "Before Calibration" opening screen. Then click "Gamut luminance". Make sure "6 Point 10% Step 50-100%" is selected from the drop down menu in the upper right. When you are ready, click the "WRGB" button at the lower right of the large multi colored CIE graph triangle. When the measurements are complete, click the lower left pop up color selector and choose red. Highlight and copy (control c) the x: CIE31 and y: CIE31 numbers in the data table in the upper right. Then open the attached spreadsheet "JVC_colors.xlr" and click on the "50" above the "RED X" row. Paste the data (control v, see screencap). You should see the "new 709" and "new 2020" numbers update automatically. Do the same for the green, blue, and white data.
In the JVC autocal software, click "Create". Input the "new 709" numbers in the Red, Green, Blue, and White data fields. Give it a name and click "START." Save it on your computer. Return to the top menu. Click "Import / Export". Use the drop down menu to specify that you want to import a color profile. Choose a Custom color profile memory and import.
On the projector, while still in the same user memory, select the new custom color profile. Go back to CalMAN and click on a new tab. Click the "WRGB" button again. Your gamut readings should all be dramatically improved. Calibrate gamma, brightness/contrast (brightness usually 1-2 or 8-14 depending on your PJ's build date and your gamma targets / settings, contrast usually -1 or -2) and fine tune white balance if desired, though the white balance should be extremely good as is.