Re: Adobe PMS-CMYK Conversions
Re: Adobe PMS-CMYK Conversions
- Subject: Re: Adobe PMS-CMYK Conversions
- From: PID Jmail <email@hidden>
- Date: Wed, 07 Dec 2005 10:24:14 -0600
Thanks for the info Vic. I asked the pre-press person I'm working with to
check the Pantone Solid to Process book, but she said that the values in
there do not (in her experience with their presses) turn out very
accurately. She is testing the Photoshop conversions on her proofer right
now. Makes me wonder if I should use a 'Pantone Process' deck for color
selection instead of 'Pantone Solids' if I rarely use spots in printing? I
do very little press printing in my job - mostly RGB output from Xerox color
laser.
Anyway, any ideas on why the three Adobe apps don't convert the PMS spot to
CMYK process with the same values?
--
Aj
> From: Vic Paredes <email@hidden>
> Reply-To: email@hidden
> Date: Wed, 7 Dec 2005 11:06:06 -0500
> To: PID Jmail <email@hidden>
> Cc: email@hidden
> Subject: Re: Adobe PMS-CMYK Conversions
>
> The most accurate way to do this is to refer to Pantone's Solid to
> Process book. However, this all depends on whether you want to achieve
> colour accuracy or perception. Some (most?) spot colours do not
> convert well to CMYK. The human eye is very subjective so if you're
> trying to achieve as close a match to a spot colour, your best bet is
> to create the CMYK values yourself (with a calibrated system of
> course).
>
> Of course, you can still make last minute tweaks on press to achieve
> what you're aiming for.
>
> Hope this helps.
>
> On 12/7/05, PID Jmail <email@hidden> wrote:
>> I¹ve come across a curiousity that I¹m hoping someone can help me with. I¹ve
>> noticed that if I create a PMS spot color (say 295 Coated) in Illustrator
>> 10.0.3, InDesign 2.02 and Photoshop 7.0.1 and then convert that spot color
>> to CMYK process, I get different results quite different...
>>
>> for PMS 295C
>> Illustrator 10.0.3 = 100c 57m 0y 40k
>> InDesign 2.0.2 = 100c 57m 0y 40k
>> Photoshop 7.0.1 = 96c 70m 13y 35k
>>
>> Illustrator and InDesign always share the same CMYK values of what a PMS
>> spot should be, but Photoshop is always different. I¹ve heard from pre-press
>> friends of mine that PMS spot to CMYK process conversions should always be
>> done in Photoshop because it is the most accurate.
>>
>> Does anyone have any info they can share about this?
>>
>> One other thing I¹ve noticed is that Photoshop will show a value difference
>> between coated and uncoated PMS spots, while Illustrator and InDesign do
>> not. Again, any help/info would be appreciated.
>>
>> for PMS 295U
>> Illustrator 10.0.3 = 100c 57m 0y 40k
>> InDesign 2.0.2 = 100c 57m 0y 40k
>> Photoshop 7.0.1 = 84c 63m 22y 14k
>>
>> Thanks
>> --
>> Aj
>>
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