Re: Printing profile test targets WITHOUT photoshop
Re: Printing profile test targets WITHOUT photoshop
- Subject: Re: Printing profile test targets WITHOUT photoshop
- From: edmund ronald <email@hidden>
- Date: Wed, 19 Aug 2009 09:53:32 +0200
I can't be bothered to look at the Generic RGB Apple Profile, and I'm
too dumb to figure out what is in a profile anyway - but maybe some of
our tech geniuses here can tell us what it is, or just make us a
genuine "do nothing" profile of some sort to act as a placeholder ?
And by the way, why is it that the longer we stick around this list
the less RGB print color management on the Mac "just works"? It used
to be a bit hard to figure out, now it's increasingly just plain
broken ... consumer/photographer inkjet is now a huge market.
Edmund
On Wed, Aug 19, 2009 at 8:39 AM, James Horne<email@hidden> wrote:
> Thanks for the suggestion. But if I am working with a colourspace of a
> wider gamut, say Adobe RGB, would I not be chucking away a fair slab of that
> gamut in the conversion to Generic RGB. Or does this get back to the root of
> my misconception about what Generic RGB actually means? Maybe Generic RGB
> just assigns tags but doesn't actually affect gamut?
>
> Cheers
>
> James
>
>
> On 19/8/09 3:55 PM, "edmund ronald" <email@hidden> wrote:
>
>> Well first of all, why not tag the target with Generic RGB in Preview
>> before doing the profile printing, and then when printing a real image
>> (say sRGB) from Preview do a "convert to profile" from sRGB to
>> Generic RGB? I'm sure Gimp can do something similar? When the print
>> path looks problematic, it gets important to use the same app for both
>> the test target and the production prints.
>>
>> Edmund
>>
>> On Wed, Aug 19, 2009 at 1:30 AM, James Horne<email@hidden> wrote:
>>> Hi folks
>>>
>>> Thanks for all the responses. If I can be a little more focussed than the
>>> conversation has turned out to be I'm keen to drill down to the comment Eric
>>> makes below, as the direct answer to my question may lie therein.
>>>
>>> "Tagging it with Generic RGB will work today..."
>>>
>>> So right now, today, if I load a profile target tif file into Preview and
>>> accept that it will apply the Generic RGB profile it will NOT affect the
>>> colour space of the target if I disable colour correction in the printer
>>> driver? Or does this remain wishful thinking. Even if Snow Leopard does
>>> bork the method in the future I would find it quite handy to be able to do
>>> the profiling now and not need to invest large dollars in photoshop when I
>>> am perfectly happy using the GIMP. In the future it sounds as if this may
>>> become unavoidable.
>>>
>>> So is the Generic RGB "profile" merely a tagging of the underlying raw rgb
>>> data without actually assigning a colour space?
>>>
>>> Klaus, I like your idea. It appeals to my Unix background!
>>>
>>> Thanks again for all the information.
>>>
>>> Cheers
>>>
>>> J
>>>
>>>
>>>
>>> On 18/8/09 11:41 PM, "Eric Chan" <email@hidden> wrote:
>>>
>>>> Brief summary: The issue is that with OS X, CS4 is using the newer
>>>> Leopard print APIs (the only print APIs supported under Cocoa), whereas
>>>> CS3 was using the older print APIs (will not be supported by the OS
>>>> going forward). The consequence of using the newer print APIs is that
>>>> the printer drivers must also be compliant with the new print APIs;
>>>> being compliant with the old print APIs is no longer sufficient.
>>>>
>>>> Moving forward, OS X is taking steps to prevent accidental printing
>>>> without color management. This makes it unlikely that you can use the
>>>> standard OS X apps like Preview to print profile targets reliably.
>>>> Tagging it with Generic RGB will work today, but not tomorrow when Snow
>>>> Leopard launches (and switches to a default profile of sRGB, not Generic
>>>> RGB). And tagging the target with sRGB tomorrow may not work for the
>>>> future (should future versions of OS X switch to another default profile).
>>>>
>>>> BTW, you should avoid printing profile targets from LR. LR does not
>>>> provide an option to disable color management, which is what you want
>>>> for printing the targets. (Yes, this is by design.) Yes, there are
>>>> workarounds, but they will only work in some cases, but not others. Save
>>>> LR for printing images -- with color management, of course -- once you
>>>> have your (custom) profile ready.
>>>>
>>>> Eric
>>>>
>>>>
>>>> Matthew Ward wrote:
>>>>> Hi all
>>>>> first post.
>>>>> There appears to be some issues with Photoshop CS4 and certain printer
>>>>> drivers causing issues.
>>>>>
>>>>> http://forums.adobe.com/thread/425386?tstart=30
>>>>>
>>>>> http://luminous-landscape.com/forum/index.php?showtopic=34090
>>>>>
>>>>> Its not clear if it is a printer driver issue but thinks work in CS3
>>>>> but not CS4.
>>>>> If you print to the target from within the profiling software (eg i1
>>>>> Match) you should get it un-colour managed?
>>>>> Hth
>>>>>
>>>>> best
>>>>> Matthew Ward
>>>>>
>>>>>
>>>>> On 18 Aug 2009, at 07:53, edmund ronald wrote:
>>>>>
>>>>>> Unfortunately, it would seem that only two applications, namely
>>>>>> Photoshop and Lightroom, have perfectly working RGB print paths at
>>>>>> this time (a few monts ago). This is what I was told, at an ICC
>>>>>> meeting.
>>>>>>
>>>>>> On Tue, Aug 18, 2009 at 4:30 AM, James Horne<email@hidden>
>>>>>> wrote:
>>>>>>> Hi folks
>>>>>>>
>>>>>>> Please pardon my query if the answer is already contained in the
>>>>>>> archive but
>>>>>>> I have not been able to find it so far. My main question is how do
>>>>>>> I go
>>>>>>> about handling a print profile test image so that no modification is
>>>>>>> made to
>>>>>>> the colour space in the process.
>>>>> _______________________________________________
>>>>> Do not post admin requests to the list. They will be ignored.
>>>>> Colorsync-users mailing list (email@hidden)
>>>>> Help/Unsubscribe/Update your Subscription:
>>>>> oo
>>>>> .com
>>>>>
>>>>>
>>>>> This email sent to email@hidden
>>>>>
>>>> _______________________________________________
>>>> Do not post admin requests to the list. They will be ignored.
>>>> Colorsync-users mailing list (email@hidden)
>>>> Help/Unsubscribe/Update your Subscription:
>>>> u.
>>>> au
>>>>
>>>> This email sent to email@hidden
>>>
>>>
>>> _______________________________________________
>>> Do not post admin requests to the list. They will be ignored.
>>> Colorsync-users mailing list (email@hidden)
>>> Help/Unsubscribe/Update your Subscription:
>>> om
>>>
>>> This email sent to email@hidden
>>>
>
>
> _______________________________________________
> 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
>
_______________________________________________
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