Re: Color Management for iPad?
Re: Color Management for iPad?
- Subject: Re: Color Management for iPad?
- From: Derek Lambert <email@hidden>
- Date: Mon, 01 Aug 2011 17:57:43 -0400
It's not free. You need to have Spyder 3 to use it.
Best Regards,
Derek Lambert
On Aug 1, 2011, at 9:30 AM, Joseph Zhan <email@hidden> wrote:
> There is one solution from DataColor(The company who has Spyder Products) for iPad available for FREE now:
>
> http://spyder.datacolor.com/product-ms-spydergallery.php
>
> On 1 Aug, 2011, at 9:29 PM, Stephane Beaudry <email@hidden> wrote:
>
>> If you read the Color and Color Spaces section of that documentation, you will notice that a shaded box placed before Device-Independent Color Spaces specifies that iOS does not support device-independent color spaces.
>>
>> The misleading fact is that they use the same generic documentation for both iOS and MacOS X and list all features, then specify unsupported functionalities for iOS somewhere in the subsections themselves.
>>
>> Regards,
>>
>> Stéphane Beaudry
>>
>>
>> Le 2011-08-01 à 03:57, Jan-Peter Homann <email@hidden> a écrit :
>>
>>> Hello Stéphane,
>>> Thanks for your very useful reply. Now it is clear, that the iOS / Quartz documentation from Apple is misleading to developers.
>>> Apple states inside the iOS documentation: "The Quartz 2D API is easy to use and provides ... advanced color management"
>>>
>>> http://developer.apple.com/library/ios/#documentation/GraphicsImaging/Conceptual/drawingwithquartz2d/Introduction/Introduction.html#//apple_ref/doc/uid/TP30001066
>>>
>>> If all the advanced colormanagement of Quartz can´t be used in iOS, Apple has to change its iOS documentation.
>>>
>>> Question to John Gnaegy, Manager of this list:
>>> - Does Apple know, that the iOS / Quartz documentation is wrong concerning color management ?
>>> - Are there any plans from Apple to provide a correct documentation ?
>>> - Are there any plans from Apple to provide a ColorSync API for iOS ?
>>>
>>> Best regards
>>> Jan-Peter
>>>
>>>
>>> Am 31.07.11 22:15, schrieb Stéphane Beaudry:
>>>> Greetings,
>>>>
>>>> I have worked as a developer for color management applications for over 6 years (Windows& MacOS) but I have spent the last two years and half as a mobile developer (iOS, Android and Blackberry) for other fields of application. When I first started on the iPhone, I tried out of curiosity to see how well color management was supported on it. Of course, it wasn't. At all.
>>>>
>>>> As of iOS 4.3, there is still no general color management support, no matter what the Quartz API promises. The whole ColorSync API is also missing from the iOS.
>>>>
>>>> Some portfolio viewing applications advise their users to save the images using the sRGB color space since they claim it is the closest match for the iPad's native color space. Of course, this is not satisfactory for a useful preview. Also, it would be very interesting to get additional information from the image such as matching tolerances, switching between rendering intents, etc.
>>>>
>>>> There are indeed ways to build an iPad application which performs the tasks of reading profiles and performing the proper conversions for images. The iOS frameworks do provide useful tools to edit even large files efficiently. Communicating between desktop and mobile applications has never been easier and may even get better when iOS 5 gets released. In short, there is a lot developers can already do to create interesting applications related to color management. It is quite challenging because mobile frameworks are still struggling to grow up (just take a look at Bluetooth on the iPad) but it is not impossible.
>>>>
>>>>
>>>> Stéphane Beaudry
>>>> Lead Developer / Mobile Applications
>>>> Innobec Technologies Inc.
>>>>
>>>>
>>>> Le 2011-07-30 à 16:52, Jan-Peter Homann a écrit :
>>>>
>>>>> Hello to all,
>>>>> I just subscribed to the colorsync developers list to ask some questions.
>>>>> It may helps if other people also subscribe and state, that they are interested for an answer.
>>>>>
>>>>> Jan-Peter
>>>>>
>>>>> ******
>>>>> Following questions I have sent
>>>>> *******
>>>>>
>>>>> Hello to all,
>>>>>
>>>>> The iOS documentation states, that ICC-profiles should be supported through Quartz.
>>>>>
>>>>> But user tests have shown, that currently no Apple iOS application for iPad seems to support ICC-profiles.
>>>>>
>>>>> Is this a problem of the current Apple applications or are there differences in Quartz ICC-profile support between iOS and Mac OS X, which are not mentioned in the official documentation ?
>>>>>
>>>>> I´m also interested on:
>>>>> - does iOS 4 provides a color characterization / profile for the display ?
>>>>> - If yes, is this an ICC-profile or an internal format because of speed optimization ?
>>>>> - if yes, is there any documentation about it ?
>>>>> - if yes, is this hardcoded, or can a developer change the display color characterization / profile ?
>>>>>
>>>>> Thanks and best regards
>>>>> Jan-Peter
>>>>>
>>>>>
>>>>>
>>>>> Am 30.07.11 18:54, schrieb Louis Dery:
>>>>>> In order to validate that ICC profiles are not used in iOS4 basic apps like "Mail" (and "Photos"), just send to yourself an e-mail with picture with two different ICC profile embedded…
>>>>>> one with Adobe RGB and a copy of this picture with a different ICC profile embedded (assigned) like ProPhoto RGB.
>>>>>> You will see in Mail (on the iPad) that they look the same! Check this e-mail on you Mac with "Mail" app and will see that they are different!
>>>>>>
>>>>>>
>>>>>> Hope this is more clear when I mentioned that color management is not implemented in iOS4, like it is on Mac OS X.
>>>>>>
>>>>>> Louis Dery
>>>>>> www.couleur911.com _______________________________________________
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>>>>>>
>>>>>
>>>>> --
>>>>> ---------- Please note the new adress --------------
>>>>>
>>>>> homann colormanagement --------- fon +49 30 611 075 18
>>>>> Jan-Peter Homann ------------ mobile +49 171 54 70 358
>>>>> Cotheniusstr. 3 -------- http://www.colormanagement.de
>>>>> 10407 Berlin -------- mailto:email@hidden
>>>>>
>>>>>
>>>>> _______________________________________________
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>>>>
>>>
>>>
>>> --
>>> ---------- Please note the new adress --------------
>>>
>>> homann colormanagement --------- fon +49 30 611 075 18
>>> Jan-Peter Homann ------------ mobile +49 171 54 70 358
>>> Cotheniusstr. 3 -------- http://www.colormanagement.de
>>> 10407 Berlin -------- mailto:email@hidden
>>>
>>>
>>>
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