Re: Calibration with Optical - Powerbook vs Cinema Display
Re: Calibration with Optical - Powerbook vs Cinema Display
- Subject: Re: Calibration with Optical - Powerbook vs Cinema Display
- From: Pete Carter <email@hidden>
- Date: Mon, 29 Dec 2003 10:41:52 +0000
Eric,
Ive found that different instruments give varying results with this
scenario. I had a similar problem with the EyeOne Display. After using the
BasICColor software things have improved considerably.
The newer Cinema display though is still brighter and has higher luminance.
Turning the brightness down before calibrating does bring things closer.
I'm waiting to see if Alwan produce an MEC for LCD's as their software seems
to be the only product about that does the job properly, INHO.
Regards,
Pete
on 29/12/03 10:00 am, pakkie at email@hidden wrote:
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Morning,
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When I calibrate/profile my Powerbook (122), using exactly the same method
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as for the my 202 Cinema-display (which I use on a G5), I get quite
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different results. I9m aware a laptop screen is not the same thing as a
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high-end LCD, but I9m surprised at the difference (may be I shouldn9t ?).
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I leave color-critical work to the G5 and Cinema-display, but as a press
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photographer, I often use my powerbook to quickly send roughly photoshopped
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images. So I9d like to be able to trust it more or less, expecting a certain
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resemblance between the laptop and the Cinema Display. Which isn9t the case.
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To calibrate/profile I use Optical and a Spyder: No problems with the
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G5-Cinema Display - things look OK on screen, and they print as expected in
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a colormanaged workflow, both in-house and elsewhere.
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The Powerbook screen (also holding a neutral grey desktop) looks much
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cooler, so do the images in photoshop, and what9s more, I get a visible
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posterization (and with it a slight color change) in the dark grey and
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middle tones (especially noticeable in b&w photo9s & grayscale images).
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Opening the same images on the Cinema Display doesn9t show these effects.
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Calibrating, in Optical (standard mode, calibrating an LCD) I set whitepoint
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to native, gamma to 2.2, and leave the 3enable calibration2 box checked.
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Also, I calibrate in a dark room to avoid glaring.
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As stated, I do exactly the same with both displays. (I don9t feel like
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targeting the Cinema Display to the powerbook)
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Can it be that both displays native whitepoints differ this much? And
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shouldn9t profiling and colormanagement make up for this?
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Setting the whitepoint to D50 or D55 in Optical before calibrating does make
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a difference of course, but the end result doesn9t convince me. Posts on
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this forum also advise profiling at native whitepoint (because adjusting
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LCDs to a certain whitebalance is done through the videocard, and this
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interferes with a displays native behavior ?)
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Someone have a clue ? Or where am I wrong?
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Thanks in advance for any suggestions.
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Eric
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Eric de Mildt photojournalist
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email@hidden / email@hidden
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