Re: BCP or no BCP to epson without rip
Re: BCP or no BCP to epson without rip
- Subject: Re: BCP or no BCP to epson without rip
- From: Marco Ugolini <email@hidden>
- Date: Tue, 09 Jun 2009 19:45:06 -0700
- Thread-topic: BCP or no BCP to epson without rip
In a message dated 6/9/09 4:53 PM, Graeme Gill wrote:
> Marco Ugolini wrote:
>
>> As for the Perceptual rendering intent, it is supposed always to map source
>> black to destination black. In that sense, BPC is redundant with Perceptual.
>> But I have seen instances in which a poorly-built output profile will produce
>> different results depending on whether or not BPC is activated -- though I
>> have reason to believe that such behavior is anomalous, and that a
>> properly-made output profile will always scale source black to destination
>> black in the Perceptual rendering intent.
>
> It's a fine theory, but of course with one major flaw - the destination
> profile in general doesn't know what the source profile black point is, so it
> can't know what to map to what.
Graeme,
I'm sure that you mean to make a valid point here, but so far it escapes me.
Properly done, RelCol + BPC *does* map source black to destination black.
That's not just a "fine theory". I've done it and seen the results
first-hand countless times.
Would you please care to bring up a practical example, detailed and
repeatable, that illustrates your point in terms that we can all understand?
Again, I have no great interest in points of theory made without concrete
examples which back them up.
Thank you.
Marco
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