jpeg Pictures
Jan 30, 2023 15:23:27 #
charles tabb wrote:
I think this has been answered before but I can't remember.
If I open a jpeg file and then close it is there any loss?
If so, is the loss naggable?
If I open a jpeg file and then close it is there any loss?
If so, is the loss naggable?
This is a bit off subject and is a quote from a book by D Klosterman about JPEG
“JPEG: Saving an image as a JPEG image file means that the camera takes the information that hits the sensor and processes it with all the settings that you ask the camera to use. If you have the White Balance set on Cloudy, it adjusts and processes the image to include and reflect that information. If you have the Picture Control set to Vivid, it processes the image to include that information. All of those settings have been applied and saved in your JPEG image file, and cannot be changed later. So if your combination of settings resulted in an image with very high contrast and bright but reddish colors, that is what your JPEG image will look like. The camera discarded some or much of the original information that hit the sensor when it processed and saved that JPEG, and that information is lost forever. For example, if the Picture Control you chose was one that included a high level of contrast, those subtle gradations of skin tones from light to dark were discarded during the processing and are gone, forever. Or as an extreme example, if you chose the Monochrome Picture Control, the resulting JPEG image will[…]”
Excerpt From
Nikon D7100 Experience
Douglas Klostermann
https://books.apple.com/us/book/nikon-d7100-experience/id637933531
This material may be protected by copyright.
Jan 30, 2023 19:53:47 #
davyboy
Loc: Anoka Mn.
jlg1000 wrote:
The "Save As" dialog will invoque that h... (show quote)
Because they shoot raw
Jan 30, 2023 22:33:28 #
photoman022
Loc: Manchester CT USA
When I used to shoot in JPEG, after editing the file, I would save it as a new, separate file (ex. 001--the original file was saved as 001a). I believe I maintained the "integrity" or the original file that way. If I'm wrong please correct me.
Jan 30, 2023 23:05:23 #
Ysarex
Loc: St. Louis
photoman022 wrote:
When I used to shoot in JPEG, after editing the file, I would save it as a new, separate file (ex. 001--the original file was saved as 001a). I believe I maintained the "integrity" or the original file that way. If I'm wrong please correct me.
You did good. That kept your original intact with no additional loss.
Jan 31, 2023 07:42:12 #
Ysarex wrote:
You did good. That kept your original intact with no additional loss.
Right on.
And if you wanted to edit the image again, you have the original to start with so the new edit is only one compression away from the original, same as the first edit.
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