LCD calibration - gamma 1.8 on PC ???

Discussion in 'Photoshop' started by Tomasz Szulczewski, Jul 5, 2004.

  1. Hi there
    I've spent all day trying to figure out what's wrong with my system and I'd
    really appreciate some help.
    Basically, I'm trying to make my prints resemble what's on my monitor (or
    rather the other way round), and after following Manuals my prints come out
    way lighter than screen.
    My system looks like this: EIZO LCD monitor (L568) on a PC with Radeon 9000
    card, calibrated with Spyder and OptiCal 3.7.8, printer - HP DeskJet 5652
    (photo inks on HP Premium Glossy paper), and Photoshop CS. It's definitely
    not state of art config, but surely capable of producing decent results...
    Thing is, monitor really looks allllmost like the print, but only when I set
    Gamma 1.8 in OptiCal !!!

    Is this normal? I's written on the stone that PC gamma i supposed to be 2.2
    and 1.8 reserved for Macs... Or maybe that's why PROS work on Macs, or maybe
    just forget all rules and regs and stick with settings that give the closest
    results? It's all a little confusing...


    Thanks a lot for all help

    -Tom-
     
    Tomasz Szulczewski, Jul 5, 2004
    #1
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  2. Tomasz Szulczewski

    Hecate Guest

    What colour spaces are you working in?
     
    Hecate, Jul 6, 2004
    #2
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  3. ....cut..
    ----------------------------------------------------------

    Working space in PS is Adobe RGB and printer's software allows me to choose
    between sRGB and Adobe RGB - in this case print was made using Adobe RGB.
    Tried with sRGB and sure, there is a lack of tonal range visible but the
    whole thing remains the same - printed thing is much lighter than the
    monitor. Funny thing is, that even if I switch off the calibration in
    OptiCal the monitor will look far more like the print. I mean, monitor is
    set to custom settings - white point 6500°K and gamma 2.2. Turning the
    calibration back on darkens the screen considerably. I've never seen
    anything like this but it's the first "decent" LCD I'm working on - I've
    only worked on CRT's before but I don't want to go back to CRT...

    -Tom-
     
    Tomasz Szulczewski, Jul 6, 2004
    #3
  4. Try to do this:

    Go to ATI's control panel. And find the Color Tab. Set gamma to 1.80 and
    make sure "All Colors" is checked. (At least that's how it's done in a
    9600XT control panel.)

    Then calibrate your display as it were gamma 1.80. Usually you'd only need
    to adjust brightness.

    The http://www.unleash.com/mikec/color/ has some nice GIFs you can use to
    calibrate your display.
     
    Branko Vukelic, Jul 6, 2004
    #4
  5. Tomasz Szulczewski

    Bobby Dogg Guest

    Bobby Dogg, Jul 6, 2004
    #5
  6. Sorted! (or so I think... :)
    Just returned from my prepress office with cromalin proof - screen is OK
    with gamma 2.2, it's my printer that gives wrong colours. Basically I just
    need now a good colour profile for my printer...
    Thanks a lot guys for your help!

    -Tom-
     
    Tomasz Szulczewski, Jul 6, 2004
    #6
  7. Tomasz Szulczewski

    Jerry McG Guest

    Turning the calibration back on darkens the screen considerably. I've never
    seen
    anything like this but it's the first "decent" LCD I'm working on - I've
    only worked on CRT's before but I don't want to go back to CRT...>

    This is the most common issue with LCDs. I fopught one in a G4 Mac until I
    gave up and went back to CRT.
     
    Jerry McG, Jul 6, 2004
    #7
  8. Tomasz Szulczewski

    Hecate Guest

    Quick guess - from what you've said you're colour managing in both
    Photoshop and with the printer. That's a recipe for getting things
    wrong.

    You'll always get a smaller tonal range with sRGB. It's essentially a
    display space for screens and has a narrower gamut than AdobeRGB.
     
    Hecate, Jul 7, 2004
    #8
  9. Quick guess - from what you've said you're colour managing in both

    That's right, my first try was colour managed in both of them. After that I
    changed PS print settings to Printer Colour Management and it did improve
    tonal range. It didn't solve the problem though - I need to make profile for
    my printer... Another good reason pfo buying PrintFix :)

    Thanx

    -Tom-
     
    Tomasz Szulczewski, Jul 7, 2004
    #9
  10. Tomasz Szulczewski

    Hecate Guest

    Hi Tom,

    You can calibrate to death and profile everything within an inch of
    it's life, but if you get the colour management wrong, you'll still
    get a colour cast. Profiling and calibration does *not* equal colour
    management, it is only *part* of the process. If you still get a
    colour cast then there is most likely something wrong with the colour
    management you are suing.
     
    Hecate, Jul 8, 2004
    #10
  11. Tomasz Szulczewski

    mono Guest

    Yep, it does feel like that sometimes doesn't it?

    Brian
    (the other one)
     
    mono, Jul 8, 2004
    #11
  12. Tomasz Szulczewski

    Hecate Guest

    Ooops! ;-)
     
    Hecate, Jul 9, 2004
    #12
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