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More than you ever wanted to know about JPEGs
May 3, 2019 11:45:52   #
Advark
 
Just saw this article and thought it might be of interest to
some UHH members.

https://parametric.press/issue-01/unraveling-the-jpeg/

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May 3, 2019 12:02:45   #
marine73 Loc: Modesto California
 
My eyes started to cross about halfway through the article. Saved it for later review

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May 3, 2019 12:05:03   #
Longshadow Loc: Audubon, PA, United States
 
Thanks for the link. Boy does that bring back memories

I used to research and edit file contents with a program called HexEdit (It's still around, and I have a copy!). Then I would write programs to read file header info and pull data out of files.
I even reverse engineered a portion of the Radio Shack Color Computer disk operating system, among other things. Those were the fun & challenging days! I loved being a Geek before there were Geeks!

Glad to see some people are still playing in HEX.

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May 3, 2019 12:21:18   #
ELNikkor
 
Excellent explanation; I've always thought jpegs were adequate for most of my work, and that most people should resize down to 200kb or smaller for most sharing applications.

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May 4, 2019 07:16:28   #
cdayton
 
Great article. Thanks for the reference.

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May 4, 2019 12:25:03   #
camerapapi Loc: Miami, Fl.
 
I am no technical guru nor I pretend to be one. I can only make assessments based on what I see in an image and I see excellent quality with modern JPEG files. No matter what, all of our usable RAW data will end up as a JPEG and we will loose data from the original file.
I shoot both files depending on the subject. I have said this before and will repeat it again. Some of my best enlargements have come from original JPEG files.

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