[Digikam-users] How to stop "watermark" reducing the size of the pictures?

[cerp]

No .... no effect whatsoever.

Quoting Jan Wolter <jan.wolter at uni-paderborn.de>:

> An adding the "Convert To JPEG" tool to the end of the queue does  
> not have a positive impact on the quality as well?
>
> On 28.08.2014 18:28, cerp wrote:
>> 4896 x 3264 before and after editing. It is just the quality and  
>> size (in Mb) that is reduced.
>>
>>
>> Quoting Jan Wolter <jan.wolter at uni-paderborn.de>:
>>
>>> What size in terms of pixels in x and y dimension has the picture  
>>> before and after editing?
>>>
>>> On 08/28/2014 03:17 PM, cerp wrote:
>>>>
>>>> There seems to be a reduction of quality.
>>>>
>>>> Why, what are you thinking of?
>>>>
>>>> Best
>>>>
>>>>
>>>> Quoting HaJo Schatz <hajo at hajo.net>:
>>>>
>>>>> Is there really a loss of quality or only a reduction of size?
>>>>>
>>>>> On Thursday, August 28, 2014, cerp <cerp at eeos.biz> wrote:
>>>>>
>>>>>> No, digikam still reduces the pictures from 4.8Mb to 1.8 Mb, with the
>>>>>> consequent loss of quality / details. It happens not only when I apply
>>>>>> watermark but any other batch tool.
>>>>>>
>>>>>> Quoting Jan Wolter <jan.wolter at uni-paderborn.de>:
>>>>>>
>>>>>> Yes, thats true. Does this settings have a positive impact to  
>>>>>> the quality
>>>>>>> of your edited pictures?
>>>>>>>
>>>>>>> On 08/28/2014 12:11 PM, cerp wrote:
>>>>>>>
>>>>>>>>
>>>>>>>> Dear Jan,
>>>>>>>>
>>>>>>>> I have set JPEG quality = 100 and chroma sub sampling = none, that
>>>>>>>> should be maximum quality correct?
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> Quoting Jan Wolter <jan.wolter at uni-paderborn.de>:
>>>>>>>>
>>>>>>>> Hello,
>>>>>>>>>
>>>>>>>>> I guess that your images are generally (independent from the added
>>>>>>>>> watermark) not saved with maximal quality. Check your  
>>>>>>>>> settings under menu
>>>>>>>>> Settings -> Configure digiKam -> Saving Images.
>>>>>>>>>
>>>>>>>>> Best regards,
>>>>>>>>> Jan
>>>>>>>>>
>>>>>>>>> On 08/28/2014 09:43 AM, cerp wrote:
>>>>>>>>>
>>>>>>>>>> Dear all,
>>>>>>>>>>
>>>>>>>>>> We use the watermark function to add the copyright in the  
>>>>>>>>>> bottom right
>>>>>>>>>> corner of the pictures.
>>>>>>>>>>
>>>>>>>>>> The pictures are taken using in camera jpeg generation,  
>>>>>>>>>> which normally
>>>>>>>>>> has very high quality.
>>>>>>>>>>
>>>>>>>>>> When we watermark in digikam, it reduces the size of the jpeg file
>>>>>>>>>> from approximately 4Mb to 1.8Mb with a considerable loss of  
>>>>>>>>>> quality. We
>>>>>>>>>> have tried setting all the parameters we could think, but  
>>>>>>>>>> without being
>>>>>>>>>> able to stop this behavior. What I would like is the  
>>>>>>>>>> original picture with
>>>>>>>>>> the watermark saved at the same resolution without  
>>>>>>>>>> additional compression
>>>>>>>>>> .... how do I achieve it?
>>>>>>>>>>
>>>>>>>>>> Thanks for your help.
>>>>>>>>>>
>>>>>>>>>> Regards
>>>>>>>>>>
>>>>>>>>>> Corrado & Rina
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> r
>>>>>>>>>>
>>>>>>>>>> _______________________________________________
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>>>>>>>>>> Digikam-users at kde.org
>>>>>>>>>> https://mail.kde.org/mailman/listinfo/digikam-users
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>> _______________________________________________
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>>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> _______________________________________________
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>>>>>>>>
>>>>>>> _______________________________________________
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>>>>>>>
>>>>>>
>>>>>>
>>>>>>
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>>>>>>
>>>>>
>>>>>
>>>>> -- 
>>>>> -- 
>>>>> Sent from my mobile device, apologies for typos
>>>>>
>>>>> PGP key: http://tinyurl.com/neswujo
>>>>
>>>>
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>>>
>>> -- 
>>> ----------------------------------------------------------------
>>> Jan Wolter, M.Sc.        | e-mail: jan.wolter at uni-paderborn.de
>>> Universitaet Paderborn   | http://ag-kastens.cs.upb.de/jwolter
>>> Fakultaet EIM/Informatik | Office: F2.303
>>> Fuerstenallee 11         | Phone:  +49 5251 606683
>>> 33102 Paderborn, Germany | Fax:    +49 5251 606697
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>>
>>
>>
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>
> -- 
> ----------------------------------------------------------------
>  Jan Wolter, M.Sc.        | e-mail: jan.wolter at uni-paderborn.de
>  Universitaet Paderborn   | http://ag-kastens.cs.upb.de/jwolter
>  Fakultaet EIM/Informatik | Office: F2.303
>  Fuerstenallee 11         | Phone:  +49 5251 606683
>  33102 Paderborn, Germany | Fax:    +49 5251 606697
> ----------------------------------------------------------------
>
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