Re: Please check this conifg for me and give your opinion
Re: Please check this conifg for me and give your opinion
- Subject: Re: Please check this conifg for me and give your opinion
- From: John W Lund <email@hidden>
- Date: Tue, 27 Mar 2007 23:25:17 -0700
Hello Marco,
you wrote:
>
> In a message dated 3/27/07 2:29 PM, John W Lund wrote:
>
>> Check the list archives (or Colorburst's excellent support forum) for why
>> they chose to build their linearizations & profiles with UV-cut instruments
>> - this means you need to also use a UV-cut spectro to relinearize their
>> existing "Environments".
>
> Dumb choice, if you ask me (which explains why no one is asking me...). They
> took something that worked with a non-UV-cut EyeOne Pro, and remade it into
> something that requires you the user to buy another spectrophotometer (to
> which I say: ciao!).
-- well, ummm... No.
As discussed at length back then, they chose to use chroma values for
linearization. Papers with optical brighteners read as "blue" to non-UV
spectros, which makes for problems linearizing the Y ink. Not a matter of
anything getting "remade".
A completely separate issue is the fact that if a user wants to
*relinearize* a Colorburst-created environment, he/she must use a UV-cut
spectro because that's what they used to create the lin file in the first
place.
You can still use a non-UV spectro, just be advised that it may be
problematic (read: failure) trying to linearize a paper with OBs. This does
*not* seem to be an issue in papers with 'neutral' whites.
Also, in v.5 Colorburst provides an option for L*a*b*-based linearization -
maybe this will allow use of non-UV spectros for all linearization &
profiling? I don't know because I haven't tried it yet...
> Let's see how long it takes for XRite to come up with profiling apps that
> adopt in-software UV detection features similar to those to be found in
> ProfileMaker in spectral mode.
-- as I understand it, the "Correct for Optical Brightener" function
applies only to the perceptual rendering intent, not to RelCol. That's great
for my fine art printing, but can pose some issues for a proofing workflow.
Regards,
John
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden