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picree
Joined: 31 Mar 2006
Posts: 351
Location: Johnson City, TN
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| Posted: Fri Jun 06, 2008 7:26 pm Post subject: Gray scale adjustment with or without gamma correction |
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This may be an easy to answer question but if we have some sort of gamma adjustment applied to our source (tse box, or a moome, or a HTPC) should we be adjusting gray scale with that component in or out of the loop and why? I know that we should be calibrating what we will actually be watching but when we throw up a "10 IRE" image it is really something like 14 IRE with good gamma correction. Should we "flatline" our input gamma when doing calibrations or setting up our projectors? Wouldn't this mess the up some of the calculations in software like HCFR? 
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MAIN THEATER: (JVC RS2000; Yamaha UDP-LX500; Yamaha RX-V2400; Lumagen Radiance Pro, Vertex)
SECOND WII-ATER: (BG808; WII; Oppo 971H; Moome external box; BG-DVI transcoder; tse gamma box; Extron)
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dropzone7
Joined: 12 Jun 2007
Posts: 1069
Location: Charlotte, NC
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| Posted: Fri Jun 06, 2008 8:11 pm Post subject: |
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According to Kal's guide you should at least do your first set of reading with the gamma OFF. Turn it all the way down to get a more accurate set of readings for your baseline. Part of your readings will be a gamma graph which will show you if you need a gamma boost or not and if so, how much. Get the greyscale down first and then apply the gamma boost. I get the impression that it's a very iterative process and may require some adjustments being done over again, after you add the gamma back into the equation.
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kal
Forum Administrator
Joined: 06 Mar 2006
Posts: 18114
Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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