Q re loss in jpegs

W
Posted By
Woollyzone
May 16, 2007
Views
245
Replies
5
Status
Closed
Hello,

I know that repeated cycles of opening a jpeg file, editing, saving and closing etc etc results in loss of detail/information in the file. However, can anyone tell me whether this is also the case if you are keeping the file open; merely saving it every now and then?
Related Tags
loses

How to Master Sharpening in Photoshop

Give your photos a professional finish with sharpening in Photoshop. Learn to enhance details, create contrast, and prepare your images for print, web, and social media.

RG
Roy G
May 16, 2007
"Woollyzone" wrote in message
Hello,

I know that repeated cycles of opening a jpeg file, editing, saving and closing etc etc results in loss of detail/information in the file. However, can anyone tell me whether this is also the case if you are keeping the file open; merely saving it every now and then?
Yes. But it is only the Saving which causes the degradation.

Roy G
N
nomail
May 16, 2007
Woollyzone wrote:

I know that repeated cycles of opening a jpeg file, editing, saving and closing etc etc results in loss of detail/information in the file. However, can anyone tell me whether this is also the case if you are keeping the file open; merely saving it every now and then?

There is a slight loss because you always resave *once* this way, but you do not get any added loss because you save repeatedly. You can save a trillion times and still get the same degradation as if you resaved only once.

—
Johan W. Elzenga johan<<at>>johanfoto.nl Editor / Photographer http://www.johanfoto.com
S
SpaceGirl
May 16, 2007
Johan W. Elzenga wrote:
Woollyzone wrote:

I know that repeated cycles of opening a jpeg file, editing, saving and closing etc etc results in loss of detail/information in the file. However, can anyone tell me whether this is also the case if you are keeping the file open; merely saving it every now and then?

There is a slight loss because you always resave *once* this way, but you do not get any added loss because you save repeatedly. You can save a trillion times and still get the same degradation as if you resaved only once.

Are you sure? I dont think that is the case. Each save will result in slight loss in quality (if the image is changed in any way).
MR
Mike Russell
May 16, 2007
"SpaceGirl" wrote in message
Johan W. Elzenga wrote:
Woollyzone wrote:

I know that repeated cycles of opening a jpeg file, editing, saving and closing etc etc results in loss of detail/information in the file. However,
can anyone tell me whether this is also the case if you are keeping the file
open; merely saving it every now and then?

There is a slight loss because you always resave *once* this way, but you do not get any added loss because you save repeatedly. You can save a trillion times and still get the same degradation as if you resaved only once.

Are you sure? I dont think that is the case. Each save will result in slight loss in quality (if the image is changed in any way).

No, Johan is correct. There is quality loss for each Load/Save cycle. If you load an image, then save it several times, without reloading it, there is only one "generation" of quality loss, and no cumulative quality loss for each save. This is because Photoshop re-saves the working copy of the image your are editing, with no reference to the original jpeg image.

The best answer: try it. Open an image, and save it 30 times (use an action key). Do the same thing, only load and save it 30 times. The difference will be obvious, should you choose to experiment.
—
Mike Russell
www.curvemeister.com/forum/
W
Woollyzone
May 17, 2007
Thanks very much for your help all who contributed.

Must-have mockup pack for every graphic designer 🔥🔥🔥

Easy-to-use drag-n-drop Photoshop scene creator with more than 2800 items.

Related Discussion Topics

Nice and short text about related topics in discussion sections