paulcliman
newbie
Reged: 08/07/2008
Posts: 2
Loc: Lassay-les-Chateaux, FRANCE
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Is it true that everytime you resave a .jpg file, it loses a little bit more info on each ocassion?
Should one always keep an original copy beforte editing, therefore?
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Norman
Reged: 23/09/2004
Posts: 1547
Loc: West London, UK
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Hi and welcome.
The answer's yes to both questions.
Keep the images that come from your camera as your 'digital negatives'. make copies and edit those, preferably saving them as TIF files. They will take up much more disk space but won't suffer compression losses each time you save them.
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Regards,
Norman
www.photobox.org.uk
A woman has the last word in any argument.
Anything a man says after that is the start of a new argument.
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frank1
addict
Reged: 14/06/2005
Posts: 590
Loc: the big smoke islington
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I second that
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PhilW
Blue Peter Badge Winner
Reged: 14/03/2007
Posts: 893
Loc: Near Wakefield, Yorkshire
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I can't see the point of the tif files you mention?
Just keep the original jpg and every time you want to do a different edit re-open this file and "save as" a new jpg. I know that there are theoretical quality gains from converting to 16bit before editing, but you don't need to save a huge tiff file to do that. Open your original jpg, change the mode to 16 bit, edit as you want, change back to 8 bit and save-as to a new file.
I'd also say to the OP not to worry too much about it. If you are starting with a minimumally compressed jpg I think you'd bge able to get away with a few saves before you startd to notice. But I do keep the original safe, so you can go back and start again if you need to.
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Phil Winterbourne
http://www.pbase.com/calis
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alanS
Dr Dust
Reged: 30/09/2005
Posts: 3402
Loc: Up North, England.
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...and if your camera is capable, shoot RAW.
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Alan's defence lawyer claimed that "Booze played no part in his typo's."
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paulcliman
newbie
Reged: 08/07/2008
Posts: 2
Loc: Lassay-les-Chateaux, FRANCE
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Many thanks for your swift inputs - much appreciated!
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Roy5051
Reged: 02/09/2001
Posts: 664
Loc: Somerset UK
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Unless you don't want to spend lots of time in front of the computer, in which case high quality JPEGs are fine.
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Roy
Why do people with expensive cameras say you don't need one to take good photographs
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