5 Replies Latest reply on Apr 1, 2009 10:04 PM by Mylenium

    targa gamma shift

      Has anyone ever come across this: I've been using the same targa sequence output module and render settings in CS3 for the last 6 months without issue, and now all of the sudden my post house is telling me they're getting a gamma shift on my renders, that the blacks are lifted and everything is a little milky. I don't see any problem on my end--when I compare my render to the original sequence they gave me there is no apparent difference.

      Even weirder is that I had a totally different post house on a different show with different targas tell me the same thing, and I was using CS4 for those shots. So it's gotta be something on my end, but what it is I have no idea.

      Any ideas on this would be greatly appreciated.
        • 1. Re: targa gamma shift
          craulmedia Level 1
          try reading this
          http://help.adobe.com/en_US/AfterEffects/9.0/WS83041962-8C6C-4b71-A649-1696A2162F9Aa.html

          btw. do you have disabled color management in the project settings?
          project is set to 16 bpc?
          • 2. Re: targa gamma shift
            Level 1
            No, I'm not using color management. Sometimes using 16bpc, but mainly just 8. Never had any issues before--the targa sequences coming out of my machine matched their originals except for whatever I'd done to them.
            • 3. Re: targa gamma shift
              Adolfo Rozenfeld Adobe Employee
              So, what's your source for this? Also Targa files?
              • 4. Re: targa gamma shift
                Level 1
                Yeah--targa files transferred off an HD master tape. I can't figure it out--when I compare the source targa with my rendered targa, I see no difference. I'm using the exact same settings I've used for the past 8 months, I haven't updated my computer's software recently, nothing.

                And like I said above, it happened using a targa sequence from another vendor and using CS4. So it's like a system setting or something but i don't know what.
                • 5. Re: targa gamma shift
                  Mylenium Most Valuable Participant
                  I'm not sure, but this sounds like they are simply not importing them correctly. Maybe they misinterpet the Alpha and it makes the color fade and when whatever editing suite they use fills the transparency, colors wash out. Apart from that - Targas will always use whatever default Gamma your program has and directly encode the skewed color info, which in a computer environment is anything from 1.6 to 2.2 or in case of 3D programs, the Gamma you define in the render settings. Beyond that the format is completely agnostic of color profiles or additional calibration meta data. Maybe you simply mis-tweaked you monitor?

                  Mylenium