June 2014 - colorsync-users

Epson Spectroproofer Pulse
by Printservices, SF 27 Jun '14

27 Jun '14

Hi, I believe the Epson SpectroProofer spectrophotometer is a Pulse device. Does anyone know why Epson is not using i1 technology? Thanks, Gary Scott Technology Support Landor Associates

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pson SpectroProofer Pulse device
by Printservices, SF 26 Jun '14

26 Jun '14

Hi, I believe the Epson SpectroProofer spectrophotometer is a Pulse device. Does anyone know why Epson is not Using i1 technology? What is the reason they are using an obsolete technology? Thanks, Gary Scott Technology Support Landor Associates

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Pulse question
by Printservices, SF 26 Jun '14

26 Jun '14

Hi, I believe the Epson SpectroProofer spectrophotometer is a Pulse device. Does anyone know why Epson is not using i1 technology? Thanks, Gary Scott Technology Support Landor Associates

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Re: Suggestions for a sick DTP20?
by John Lund 26 Jun '14

26 Jun '14

Just want to send out a Thank You! - to Graeme and Steve - for encouraging responses to this. Got it apart, had Batteries Plus rebuild the battery, and now it functions again. (still can't use it on any OS past OSX 10.6.8, of course) Best, John JWL Images Emeryville > On Jun 9, 2014, at 12:30 PM, John Lund <john(a)jwlimages.com> wrote: > >> Hi ColorSyncers, >> >> Apologies if this is a bit far afield, but I'm thinking if I can get assistance about this from anywhere, it would be here… >> >> After years of good performance, my trusty DTP20 spectro is kaput - the battery will not take a charge anymore. X-rite wants $700 to rehabilitate it; that is out of the question for me. >> >> I hate the thought of just trashing it, so first I want to ask if any third parties might be able to replace the rechargeable battery in this unit. I'm thinking once upon a time there were people who actually repaired electronics, might that be possible here, or is this device too obscure? >> >> If I can't figure out a repair option, I would welcome anyone's interest in picking this up for parts - I have the entire PulseColor Elite system, with the target & profile creation software & h/w, carry case & the DTP94 monitor calibrator. >> >> Thanks for any suggestions… > > Hi John, > > Batteries Plus might be able to help you. > > They mention that they can replace / build batteries as needed for different devices. > > We have 3 in the Seattle area so there may be some in your neck of the woods as well: > > <http://www.batteriesplus.com> > > regards, > > Steve

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Change Acct Info
by Anthony Sanna 12 Jun '14

12 Jun '14

Sold the business. New owners are touchy about everything they bought and are cutting off my asanna(a)sacofoods.com<mailto:asanna@sacofoods.com> e-mail account. Where do I go to change my e-address for the colorsync group? Couldn’t find it on apple.com<http://apple.com>. Tony - Anthony Sanna (608) 206-3134 asanna(a)sacofoods.com<mailto:asanna@sacofoods.com>

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is anything white?
by John Gnaegy 11 Jun '14

11 Jun '14

Hey list members, is anything perceived by the standard observer as technically, absolutely white? If white is all colors, and assuming that means equally, it should be illuminated by the entire visible spectrum equally and reflect the entire visible spectrum equally (or be illuminated unequally and be unequally reflective in inverse proportion). Is there a combination of light source and material like that? Snow seems like a good candidate for a material, but illuminated by what? Our sun? Stars have different spectra. Is the spectral output of our sun at midday (on the equator during an equinox, or somewhere in the tropics at the right time of year) considered the reference "white" illuminant?

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Suggestions for a sick DTP20?
by John Lund 10 Jun '14

10 Jun '14

Hi ColorSyncers, Apologies if this is a bit far afield, but I'm thinking if I can get assistance about this from anywhere, it would be here… After years of good performance, my trusty DTP20 spectro is kaput - the battery will not take a charge anymore. X-rite wants $700 to rehabilitate it; that is out of the question for me. I hate the thought of just trashing it, so first I want to ask if any third parties might be able to replace the rechargeable battery in this unit. I'm thinking once upon a time there were people who actually repaired electronics, might that be possible here, or is this device too obscure? If I can't figure out a repair option, I would welcome anyone's interest in picking this up for parts - I have the entire PulseColor Elite system, with the target & profile creation software & h/w, carry case & the DTP94 monitor calibrator. Thanks for any suggestions… John JWL Images Emeryville, CA

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Re: There is no place for individual taste in screen appearance
by tlabarbera 10 Jun '14

10 Jun '14

>> John Gnaegy <gnaegy(a)apple.com>: Artists too don't need to think about these things for the most part. Oh really?! As an artist, I am always concerned about color and I do indeed "think about these things". I don't think I'm an exception. Terrie tlbtlb(a)mail.com

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Re: There is no place for individual taste in screen appearance.
by David Wollmann 10 Jun '14

10 Jun '14

John Robert Robinson, something we still need to clear up is your assertion that your are measuring some color. If you are using the eye-dropper in Photoshop or any of the other cursors, you are not measuring anything. The cursor is simply reporting a number derived from the opened file. The numbers mean nothing without a profile. The ICC color profile provides the definition for the numbers. The document needs a profile to define the “colors” and Photoshop needs to reference that through a profile that describes or characterizes the display. All RGB profiles use a scale of numbers from 0 to 255 but ProPhoto can produce saturated colors that sRGB never could. The scale is different, the distance from the center to the edge is greater, and the further from the center, the more saturated the color. ProPhoto is larger, sRGB is much smaller and their shapes differ. The center is always zero and the edge is always 255. Color is 3 dimensional and the shape varies from one profile to another. The top at the center is white and the bottom at the center is black. That’s why we convert from one color space to another - to preserve the color appearance on some other device. This is the only time a profile becomes active because the conversion does change the numbers but preserves the appearance. Assigning changes the appearance but not the numbers. Seems counterintuitive but its not when you understand the size and shape of color profiles. I had to chuckle at John Gnaegy’s use of “salmon” as a color reference for I was coming up with a very similar example. To illustrate this, create a new RGB document in Photoshop, make it sRGB. Go to the color picker and make a new RGB color using R255, G128, B128. Fill your new document with that salmon color. Now go to Edit > Assign Profile, and make sure the Preview check box is selected. Assign ProPhoto, you will see the color change to “Magenta.” Now assign ColorMatch RGB and you will see the color shift to a washed out version of “Salmon.” If you also had your info palette open when doing the Assign Profile, you would also notice that the numbers did not change at all, just the appearance. The numbers by themselves mean nothing. The color profile is paramount in providing definition to the numbers. Also when using the eye-dropper in Photoshop to report on the numbers, and especially when checking the cleanness of the whites - avoid the use of Point Sample, which is a single pixel. Use a 3x3 matrix, the average of nine pixels, or use 5x5 the average of 25 pixels, that will give you a much better representation of any tint your whites may have. David Wollmann

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Yosemite and Color
by David Scharf 10 Jun '14

10 Jun '14

Just wondering if anybody has yet had a glimpse of how the new Mac OS, "Yosemite", is handling color management. Any improvement? Will this be the OS that finally gets many of us past 10.6.8? -- DAVID SCHARF PHOTOGRAPHY *DAVID SCHARF PHOTOGRAPHY* Scanning Electron Microscopy http://www.scharfphoto.com

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