Archived posting to the Leica Users Group, 2006/02/23

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Subject: [Leica] Daily Dose of Spring XI
From: henningw at archiphoto.com (Henning Wulff)
Date: Thu Feb 23 11:54:43 2006
References: <9b678e0602221659y6619bb2fp9176ecef4b4598ba@mail.gmail.com> <43FD1511.1060904@adrenaline.com> <9b678e0602221852u567a926x9a66976d75ee468e@mail.gmail.com> <43FD2791.9040206@adrenaline.com> <9b678e0602221916j5df65dd9t2b2a286b9f194341@mail.gmail.com> <066141F2-F013-464B-934F-FA3F493B5DA9@ralgo.nl> <6.2.3.4.2.20060223133203.02a83060@mail.rhtc.net> <EEE0C0BF-5895-4C66-94F6-30C1260279BE@ralgo.nl>

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
  /###\   mailto:henningw@archiphoto.com
  |[ ]|     http://www.archiphoto.com

Replies: Reply from bruce at ralgo.nl (bruce) ([Leica] Daily Dose of Spring XI)
In reply to: Message from don.dory at gmail.com (Don Dory) ([Leica] Daily Dose of Spring XI)
Message from scott at adrenaline.com (Scott McLoughlin) ([Leica] Daily Dose of Spring XI)
Message from don.dory at gmail.com (Don Dory) ([Leica] Daily Dose of Spring XI)
Message from scott at adrenaline.com (Scott McLoughlin) ([Leica] Daily Dose of Spring XI)
Message from don.dory at gmail.com (Don Dory) ([Leica] Daily Dose of Spring XI)
Message from bruce at ralgo.nl (bruce) ([Leica] Daily Dose of Spring XI)
Message from images at InfoAve.Net (Tina Manley) ([Leica] Daily Dose of Spring XI)
Message from bruce at ralgo.nl (bruce) ([Leica] Daily Dose of Spring XI)