My printer has me save the CMYK files as PS .eps files, as they say that the
color will reproduce just as on my monitor that way.
Of course, many things can go nuts on a press.
Bill Pearce
----- Original Message -----
From: "Chuck Norcutt" <chucknorcutt@xxxxxxxxxxxxxxxx>
To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
Sent: Tuesday, September 01, 2009 12:44 PM
Subject: Re: [OM] CMYK and RGB
>I converted some images of my daughter's church that I had taken for her
> for the church publication. They had to be converted to CMYK for the
> printer. I had never done that before but used PhotoShop and I was
> pleasantly surprised that the printed brochures looked as much like my
> original images as I sometimes see off my own printer. Not perfect but
> not bad either. It was especially surprising since I had no direct
> contact with the printer and never saw any proofs before the final print.
>
> After looking at your test conversions with photos taken in unknown
> white balance I'm wondering if you're expecting too much. After all,
> you don't know what the originals looked like. I think I would ask what
> software was used to do the original conversion. See if you can use the
> same software to convert (at least one) back to RGB. If it comes back
> looking like the PhotoShop conversion you know the problem is in the
> original RGB image and will need some fixup in PS before final use.
>
> Chuck Norcutt
>
>
>
> C.H.Ling wrote:
>> Unfortunately I found very big difference between different softwares and
>> I don't think PS did a good job:
>>
>> By PS:
>>
>> http://www.accura.com.hk/temp/24_1_PS.jpg
>>
>>
>> By InfanView:
>>
>> http://www.accura.com.hk/temp/24_1_IV.jpg
>>
>> I also tried to convert a digital camera image from sRGB to CMYK, the
>> color
>> changed a lot with the "Convert to Profile" setting:
>>
>> Source: sRGB
>> Destination: Working CMYK - U.S. Web Coated (SWOP) v2
>> Engine: Adobe (ACE)
>> Intent: Relative Colorimetric
>> Black point Compenstaion
>> Use Dither
>>
>> I save the converted file to CMYK tiff and then import back to PS, use
>> the
>> same procedure to convert the file back to sRGB but the color didn't
>> change.
>> That means it is very differ from the original sRGB camera image. I'm
>> confused?
>>
>> C.H.Ling
>>
>>
>>
>> ----- Original Message -----
>> From: "Sue Pearce"
>>
>>> I work with CMYK files all the time, as that is required for printed
>>> pieces.
>>> You can simply change the file in PS under mode.
>>>
>>> There will probably be some differences in the two files, but it
>>> shouldn't
>>> be very noticable.
>>>
>>> Bill Pearce
>>> ----- Original Message -----
>>> From: "C.H.Ling" <ch_photo@xxxxxxxxxxxxx>
>>> To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
>>> Sent: Tuesday, September 01, 2009 10:27 AM
>>> Subject: [OM] CMYK and RGB
>>>
>>>
>>>> Just got some CMYK (TIF) files from a customer but what I need is RGB
>>>> for
>>>> slide output. Is there anyone know to properly load CMYK file? I got
>>>> very
>>>> different results by using Photoshop and IrfanView, IrfanView gives
>>>> much
>>>> more closer color than Photoshop. The CMYK files just look ugly when
>>>> loaded
>>>> to Photoshop.
>>>>
>>>> Thanks in advance for your help!
>>>>
>>>> C.H.Ling
>>>>
>>>> --
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>>
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