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    three identical monitors don't match

    I have three Identical LCD monitors for editing. I have calibrated one monitor to color bars. When I set the other monitor to the same color settings as the calibrated monitor the second monitor doesn't match the first even though they both have the same settings exactly. Why is it slightly different? I also have a third monitor that always shows white backgrounds on reddit etc with a yellow tint to them and the youtube logo is bright redish/pink rather than dark red.

    They all have the same model number, release date etc printed on the back.

    #2
    If setting one specimen of a model of monitor to known good settings from another resulted in perfect calibration there would be no money at all in the calibration tool market.

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      #3
      You are going to need monitor calibration HW and calibrate each monitor with it. I use a colormunki and it asks if I want to calibrate the second monitor to match the first.

      Calibrating "by eye" is about as accurate as calibrating it to Wednesday.


      EDIT: Also you need to let the monitors warm up for about 20 mins before calibrating. AFAIK this is the same for LED's as CRT's
      Last edited by jamedia.uk; 04-12-2017, 01:10 AM.

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        #4
        Leds all vary - they're made in batches, so a pile of screens will all be similar, but not identical, but tomorrows production could be very different if the batches changed. Think of it like wallpaper. Each roll has a code for the batch. You cannot mix batches because colours will be different. Monitors reveal very subtle differences - that's, I guess, what they are supposed to do. In fairness CRTs were exactly the same. Hence why they give you tweaking knobs!

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          #5
          You need to calibrate and adjust each individual monitor, individually.

          It's the same way with cameras, too.

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            #6
            Originally posted by Run&Gun View Post
            You need to calibrate and adjust each individual monitor, individually.

            It's the same way with cameras, too.

            Agreed but the ColorMunki software/Hardware, and I assume the Spyders IOnes etc etc, will not only calibrate your screen but can match multiple screens on the same MAC/PC. You have to run the calibration on each screen one after the other. It seems to work.

            With modern LED panels unless you are buying matched sets from Eizo (and selling the house and children to buy them :-) as everyone has said all monitors are going to have different characteristics. Not a lot, and 98% of the world won't care, but for photo/video editing it does matter.

            Also not only should you let them warm up for 30 mins before calibrating they need recalibrating periodically too.... Depending on your environment and what you are doing anything from monthly to weekly, to daily. There are some places where every day the junior has to come in early and turn everything on so that when the others come in 30 mins later they can calibrate over coffee on a daily basis.

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              #7
              How come I know professional editors and colonists in Hollywood that don't calibrate their monitors every week etc? They calibrate once and leave it for years.

              I also know one guy who color graded for star wars films and he said his monitors weren't even calibrated at all because it doesn't matter

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                #8
                Originally posted by offbeatbryce View Post
                How come I know professional editors and colonists in Hollywood that don't calibrate their monitors every week etc? They calibrate once and leave it for years.

                I also know one guy who color graded for star wars films and he said his monitors weren't even calibrated at all because it doesn't matter
                ...They really don't sound like they care about color. Monitors slowly change color over time, and eventually you have to replace them when they are no longer able to display the correct color range. ( you really notice this when you buy a new monitor and try and get your older monitors to match, and often the older monitors have faded to the point where it's no longer possible to match them )

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                  #9
                  Originally posted by offbeatbryce View Post
                  How come I know professional editors and colonists in Hollywood that don't calibrate their monitors every week etc? They calibrate once and leave it for years.

                  Editors maybe, if they then use a separate colourist Who do use calibrated screens. But the colonist you were talking to seems to have been talking out of his arse? :-)
                  (even taking into account US<-> English spellings....


                  Originally posted by offbeatbryce View Post
                  I also know one guy who color graded for star wars films and he said his monitors weren't even calibrated at all because it doesn't matter
                  That statement is an oxymoron.

                  BTW name names. It should be easy to check.

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                    #10
                    Originally posted by offbeatbryce View Post
                    I also know one guy who color graded for star wars films and he said his monitors weren't even calibrated at all because it doesn't matter
                    So why are you worried about calibrating your monitors if it doesn't matter?

                    Either this 'one guy' is full of crap, or he personally doesn't calibrate the monitors being used and doesn't realize that they are, which I would find very hard to believe if he is a colorist working at that level(see first part of my comment).

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                      #11
                      Originally posted by offbeatbryce View Post
                      How come I know professional editors and colonists in Hollywood that don't calibrate their monitors every week etc? They calibrate once and leave it for years.

                      I also know one guy who color graded for star wars films and he said his monitors weren't even calibrated at all because it doesn't matter
                      For editors it doesn't matter. For colorists if they say it doesn't matter then they should be shown the door. I've never heard such garbage.
                      Mitch Gross
                      Prolycht Lighting
                      NYC

                      Comment


                        #12
                        Originally posted by Mitch Gross View Post
                        For editors it doesn't matter. For colorists if they say it doesn't matter then they should be shown the door. I've never heard such garbage.Mitch Gross
                        Cinema Product Manager
                        Panasonic North America
                        Perhaps it only matters for Panasonic Camera users?

                        I'll get me coat :-)

                        (I use Panasonic cameras and calibrate my monitors)

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                          #13
                          Originally posted by jagraphics View Post
                          Perhaps it only matters for Panasonic Camera users?

                          I'll get me coat :-)

                          (I use Panasonic cameras and calibrate my monitors)
                          Well looking at the pictures it does seem we care more about the image quality than some manufacturers...
                          Mitch Gross
                          Prolycht Lighting
                          NYC

                          Comment


                            #14
                            Originally posted by TheDingo View Post
                            ...They really don't sound like they care about color. Monitors slowly change color over time, and eventually you have to replace them when they are no longer able to display the correct color range. ( you really notice this when you buy a new monitor and try and get your older monitors to match, and often the older monitors have faded to the point where it's no longer possible to match them )

                            This is not true, most modern monitors do NOT change color much over time. (Unlike CRT's). What changes over time is brightness.

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                              #15
                              Originally posted by jagraphics View Post
                              Agreed but the ColorMunki software/Hardware, and I assume the Spyders IOnes etc etc, will not only calibrate your screen but can match multiple screens on the same MAC/PC. You have to run the calibration on each screen one after the other. It seems to work.

                              With modern LED panels unless you are buying matched sets from Eizo (and selling the house and children to buy them :-) as everyone has said all monitors are going to have different characteristics. Not a lot, and 98% of the world won't care, but for photo/video editing it does matter.

                              Also not only should you let them warm up for 30 mins before calibrating they need recalibrating periodically too.... Depending on your environment and what you are doing anything from monthly to weekly, to daily. There are some places where every day the junior has to come in early and turn everything on so that when the others come in 30 mins later they can calibrate over coffee on a daily basis.

                              Color Munki, Spyder Calibrator's, etc. are crap. They change the LUT's in your computer, they do not affect your screen. These kind of pucks might be fine for Photoshop, but in the grading world they are meaningless, because the signal is YUV, not RGB. Not only are they NOT dependable for standardized color, but if you were to calibrate consecutively say 10 times, you would find that the calibration would often be different from one to the next. Real calibrated units are being measured with Klein's or some such units that cost around $40K. This is why real color grading monitors are so expensive.

                              Color on modern LED's does not change so much over time (unlike the old CRT's). Once they are calibrated by a real and accurate service, the only thing that your puck can help you with is brightness adjustment. In other words, you could take a measurement AFTER it has been properly calibrated by the service, which would give you it's brightness readings and then track that over time with your puck, adjusting to stay close to your original reading. But you can forget it for accurate color readings or even for the first/base luminousity reading.

                              By the way I have a top of the line Eizo and I can tell you that even though it "calibrates" weekly, it is clearly flat and green by comparison to my FSI grading monitor and it cannot in any way be relied on by comparison.

                              The other thing which I find hilarious, is that if you iook at a room's light sources where people often do home "grading", it is such a mixed bag that there is no way in high heaven that their "calibrating" puck has a chance for accurate readings. Not to mention the red and yellow curtains, Bon Jovi poster from their 1980's adolescence and the violet shade of paint on the wall facing them.
                              Last edited by yoclay; 04-14-2017, 08:20 PM.

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