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Author Topic: Calibrating via IMB/IMS ? Alan Gouger Jedi Master Film Handler Posts: 501 From: Bradenton, FL, USA Registered: Jul 2000 posted 03-25-2017 05:59 PM                        Is it possible to calibrate playing back the patterns using the projectors internal IMS? If so where would you enter the data. I have the content meant for use with the server supplied by Qalif.  |  IP: Logged Alan Gouger Jedi Master Film Handler Posts: 501 From: Bradenton, FL, USA Registered: Jul 2000 posted 03-25-2017 07:15 PM                        I dont think I worded my question properly and time has expired I can no longer edit my post. Trying to explain it better below. I have the calibration patterns for use with the server/IMS supplied by Qalif. If measuring the patterns during playback from the projectors IMS where or how would you enter the data?  |  IP: Logged Jose Angel Velasco Film Handler Posts: 34 From: St.Feliu de llobregat Registered: Mar 2008 posted 03-26-2017 04:08 AM                        What are you measuring? And, what data do you need to enter?  |  IP: Logged Dave Macaulay Film God Posts: 2321 From: Toronto, Canada Registered: Apr 2001 posted 03-26-2017 06:25 AM                     Color is calibrated in the ICP using ICP pattern files on TI projectors. You can use a server playback of full white to set/calibrate image brightness. Lens settings and image masking can be adjusted using ICP patterns or playback patterns but ICP patterns are usually used. What else is required?  |  IP: Logged Harold Hallikainen Jedi Master Film Handler Posts: 906 From: Denver, CO, USA Registered: Aug 2009 posted 03-26-2017 10:04 AM                        The original poster mentioned Qalif, which is similar to the USL LSS-100P and a similar product from Cinema Test Tools. Each of these products uses a test DCP. The projected image is analyzed for color and luminance. Speaker SPLs are also measured. The results are reported to a database for further analysis and trend detection. Some information on LSS color measurement is at http://ftp.uslinc.com/ftp/Products/LSS-100P/Documents/Technical/ColorMeasurement/ColorMeasurment%20LSS_160525.pdf . A manual on the LSS, which gives more idea of the concepts of this type of instrument, is at http://ftp.uslinc.com/ftp/Products/LSS-100P/Software/Firmware/beta/LSS-100P_UserManual_160817.pdf . Information on Qalif is at http://h-t-solutions.com/qalif/ . Information on the Digital Test Tools system is at http://digitaltesttools.com/ . Harold  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 03-26-2017 11:05 AM                     Dave is correct in that for DLP projectors, the color is calibrated in the ICP. Now it is true that most people use the internal patterns to calibrate the projector (actually, it is the full on "pattern" on the formatter boards that is used for calibration (hence they are also called "uncorrected" and are accessible regardless if the RGB 12bit color patterns are present or not). That said, the "proper" way is to use the server itself to play a full red/green/blue/white pattern (the way 3D does it). This takes into account the full signal path and any potential influences to the image. Ideally, it should make no difference but if something is adversely affecting the color, using the test patterns from the server will take that into account. As such, using the Qualif patterns from your server should allow the unit to make an appropriate MCGD file for color correction. The IMS has nothing to do out of the ordinary. Where an IMS CAN affect color is on its alternate content inputs like HDMI. On the IMS1000/IMS2000 there are indeed YCrCb versus RGB versus Auto settings. Furthermore, I've found that if you leave it in Auto, odds are the black levels will suck on the IMS series(for alternate content). I would presume they will eventually fix this.  |  IP: Logged Alan Gouger Jedi Master Film Handler Posts: 501 From: Bradenton, FL, USA Registered: Jul 2000 posted 03-26-2017 12:54 PM                        Thank you Harold and Steve you explained it much better then I. I want to accomplish the same thing as the Qalif measuring the entire signal path but without having to use the Qalif. So bypassing the internal patterns using patterns played from the server I would still have to go back and enter that data in ICP calibration program, there is no other location to add this data? Thank you!  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 03-26-2017 02:35 PM                     Essentially, no. Depending on your projector, there will be a means to do it in their respective UIs but that is just an alternate means of communicating with the ICP.  |  IP: Logged System Notices Forum Watchdog / Soup Nazi Posts: 215 Registered: Apr 2004 posted 02-05-2019 02:59 PM                 It has been 681 days since the last post.  |  IP: Logged Ioannis Syrogiannis Expert Film Handler Posts: 147 From: Reykjavík, Iceland Registered: Jun 2005 posted 02-05-2019 02:59 PM                     quote: Harold Hallikainen Some information on LSS color measurement is at http://ftp.uslinc.com/ftp/Products/LSS-100P/Documents/Technical/ColorMeasurement/ColorMeasurment%20LSS_160525.pdf . A manual on the LSS, which gives more idea of the concepts of this type of instrument, is at http://ftp.uslinc.com/ftp/Products/LSS-100P/Software/Firmware/beta/LSS-100P_UserManual_160817.pdf . The following links would be more up-to-date. I guess that, since the links are already shared, it wouldn't be bad to point out the difference: http://ftp.uslinc.com/Products/LSS-100P/Documents/Technical/ColorMeasurement/ColorMeasurment%20LSS_160525.pdf http://ftp.uslinc.com/Products/LSS-100P/Documents/LSS-100P_UserManual_160817.pdf  |  IP: Logged

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