Archived posting to the Leica Users Group, 2006/02/23
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]At 7:56 PM +0100 2/23/06, bruce wrote:
>Agreed, but I assumed that the images were originally shot as JPEGs.
>
>B.
>
>On 23-feb-2006, at 19:35, Tina Manley wrote:
>
>>At 01:27 PM 2/23/2006, you wrote:
>>>Don't know if this is teaching grandma .................... , but, I
>>>heard a tip the other night ............. that each time one modifies
>>>and saves a JPEG, the image deteriorates (often producing artifacts).
>>>They, JPEGs, after modification, should be saved under another name
>>>etc. etc.
>>>
>>>B.
>>
>>Saving under another name won't keep it from deteriorating. Every
>>time you save it as a jpeg (under any name), it compresses again,
>>losing information. If you need to work on a photo it's better to
>>do it as a tiff or another lossless format. Instead of resaving
>>jpegs, start all over again with the tiff and make a new jpeg.
>>That's one reason (of many) to use RAW in digital cameras instead of jpegs.
>>
>>Tina
If the image was initially shot as a jpeg, open it up and save it as
a tif or psd file. Do your stuff; adjust and 'fix' it, then save it
again as a tif. From that make a jpeg, if that's what you need. If
you later need a jpeg at a different size or want to make changes, go
back to the tif or psd file. DO NOT save the intermediate files as
jpegs.
--
* Henning J. Wulff
/|\ Wulff Photography & Design
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