JPEG properties

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BurnOmania
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Joined: Tue Nov 06, 2007 3:14 pm

JPEG properties

Post by BurnOmania » Fri Dec 24, 2010 8:28 am

Under Properties -> Image Format: Just wondering, what are the diff. between JPEG TrueColor (1.1) vs 1.2
My old PS CS3 was saving JPEG files (standard mode) in v1.2
the new one CS5 is saving them (same mode) in v1.1
i'm kinda confused here
any help??

thnx

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XnTriq
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Re: JPEG properties

Post by XnTriq » Fri Dec 24, 2010 9:15 am

What's wrong with all the answers you were given on the Adobe Forums just moments ago?

BurnOmania
Posts: 11
Joined: Tue Nov 06, 2007 3:14 pm

Re: JPEG properties

Post by BurnOmania » Fri Dec 24, 2010 2:16 pm

Maybe I did not get the right answer to my question!? :)

anyway, your links is not answering my main question about the version diff v1.1/1.2

thnx anyway.

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XnTriq
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Re: JPEG properties

Post by XnTriq » Fri Dec 24, 2010 3:15 pm

BurnOmania wrote:Maybe I did not get the right answer to my question!? :)
... within an hour Image
Ecma International ([url=http://www.ecma-international.org/publications/techreports/E-TR-098.htm]Technical Report TR/98[/url]) wrote:Shortly thereafter, the group came to the conclusion that the spatial sampling relationship of components specified in JFIF 1.0 was not ideal since it followed digital video conventions rather than those used in common computer formats such as Postscript and QuickTime. They chose to publish another version, JFIF 1.01, which changed that part of the specification to follow the computer format convention. This was deemed to be a minor change since JFIF 1.0 had been circulated for only a short while and decoders which ignored the version number would still render similar images. The Independent JPEG Group (IJG) adopted JFIF version 1.01 for use in its public domain software, which eventually led to millions of images being published in this format. Later in 1992, user feedback led to the final version of JFIF, version 1.02, which supported additional thumbnail formats – most importantly including thumbnails stored in compressed format.

BurnOmania
Posts: 11
Joined: Tue Nov 06, 2007 3:14 pm

Re: JPEG properties

Post by BurnOmania » Fri Dec 24, 2010 9:15 pm

interesting... thnx a lot!

so, no worries if PS CS5 saves JPEG files with v1.1? I thought newer PS versions should support the latest JPEG's version, isn't it?

drc0369
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Joined: Fri Mar 25, 2016 3:15 pm

Re: JPEG properties

Post by drc0369 » Fri Apr 08, 2016 2:40 pm

BurnOmania wrote:Under Properties -> Image Format: Just wondering, what are the diff. between JPEG TrueColor (1.1) vs 1.2
My old PS CS3 was saving JPEG files (standard mode) in v1.2
the new one CS5 is saving them (same mode) in v1.1
i'm kinda confused here
any help??

thnx
Same here, don't know why it doesn't just sort by the File Type parent. I don't care or need to know what version it is. It messes up my sorting having to try and locate a jpeg and it's sorted by what version it is. Might have to find another image file manager program...

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