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

[cerp]

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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>>>>>>>>
>>>>>>>
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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
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