Re: Converting current profiles for old OS versions
Re: Converting current profiles for old OS versions
- Subject: Re: Converting current profiles for old OS versions
- From: Jonathan Taylor <email@hidden>
- Date: Fri, 16 Sep 2011 11:21:55 -0400
Hi Mathew,
Thanks again for the good info. Yup, 9.2 supports DVI. In fact DVI support
should go all the way back to Mac OS 8.6, since 8.6 shipped with the first
Powermac G4 with a DVI video card. Tech history is a strange thing. It's
pretty amazing that I can also run Leopard and CS4 on a box that is 12 years
old, then a re-boot brings me back in time to OS 9 and Photoshop 7.
Although I've been doing my own color-managed fine art work since 2006,
there are many fine details I still need to fill in my understanding of
color management. I just checked and neither of the classics, Real World
Color Management and Andrew Rooney's book have been updated in several
years. Anyone know of any good current references?
jt
On Fri, Sep 16, 2011 at 3:20 AM, Matthew Ward <
email@hidden> wrote:
> Hi
> Essentially
> Matrix based profiles are used for devices that behave themselves - they
> multiply the colour signals by a 3x3 (for RGB) matrix of numbers. (Often
> used for monitors)
> LUT (Look up table) profiles have a series of measurements of the colour
> space embedded in them and are used for things that behave slightly more
> erratically - (like printers).
>
> You should not experience much of a problem using V2 profiles, they are
> just as wide, its more about getting exactly the same answers out of
> different colour management systems.
> If you care, there is a technical explanation at www.color.org which
> contains simple straightforward blindingly obvious statements like:
> 'More consistent and higher quality perceptual intent transforms because
> there is now a fully-defined perceptual reference medium dynamic range and
> gamut'.
>
> Does OS 9.2 support DVI?
>
> Best
> Matthew Ward
>
>
>
> On 14 Sep 2011, at 10:10, Jonathan Taylor wrote:
>
> Thanks all for the helpful answers. I just spent a productive hour testing
>> some of the suggestions. Blue Eye Pro has an option to make a version 2
>> profile, and I found in the Advanced section that it was already set to
>> "Matrix-Profile." (The other option was "LUT-Profile." Can anyone tell me
>> what the difference is?) As predicted this created a profile that could be
>> used on 10.6.8, 10.5.8, 10.4.11 and 9.22.
>>
>> Is there anything I am losing by using a v2 instead of a v4 profile? Any
>> concerns with v2 and my wide gamut monitor?
>>
>> BTW, all Macs are connected to the monitor with DVI through a DVI KVM.
>> Although no one has commented on it so far, doesn't the fact that my
>> monitor
>> has its own hardware LUT also help ensure that four Macs can share the
>> same
>> profile? Wouldn't the monitor harware LUT also make this setup work with
>> analog/VGA connections, since the video card shouldn't be involved?
>>
>> jt
>>
>> On Tue, Sep 13, 2011 at 3:13 AM, Matthew Ward <
>> matthew@**matthewwardphotography.com <email@hidden>>
>> wrote:
>>
>>
>>> On 12 Sep 2011, at 03:28, Jonathan Taylor wrote:
>>>
>>>
>>> ***[To cut to the chase, here's the question]***
>>> Can I-- and how do I-- convert a monitor profile created by Lacie's Blue
>>> Eye
>>> Pro software (v1.0.16) under 10.6.8 to a profile format that OS9 will
>>> recognize?
>>>
>>>
>>> There are essentially 2 sorts of profile, V2 (version 2) and V4 (version
>>> 4).
>>> If you are creating v4 profiles with your software they are not
>>> backwardly
>>> compatible.
>>> If you create a v2 profile OS9 should see it.
>>> You may or may not be able to specify which type of profile to create in
>>> your software.
>>> I am not aware of any way to convert a v4 profile into a v2 using
>>> software.
>>>
>>> Best
>>> Matthew Ward
>>>
>>> ______________________________**_________________
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>
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