With reference to the data lost when copying JPG's,
is it the same when moving a file or not.
I assume it is the same because moving is nothing else
than copy and delete.
2008-05-16 12:08:16
#1
With reference to the data lost when copying JPG's,
is it the same when moving a file or not.
I assume it is the same because moving is nothing else
than copy and delete.
With reference to the data lost when copying JPG's,
is it the same when moving a file or not.
I assume it is the same because moving is nothing else
than copy and delete.
"Dave" wrote in message
With reference to the data lost when copying JPG's,
is it the same when moving a file or not.
I assume it is the same because moving is nothing else
than copy and delete.
I am fairly certain that copying a Jpeg does not do any damage to the data.
It is only the application of compression during a Save that does damage.
Roy G
Dave wrote:
With reference to the data lost when copying JPG's,
is it the same when moving a file or not.
I assume it is the same because moving is nothing else
than copy and delete.
It all depends on how you do it. If you open a JPEG in an application and copy it by using 'Save as...', the image will be compressed again and that causes data loss. If you move or copy the image by dragging it from one folder to another, there is no data loss.
On Fri, 16 May 2008 17:15:20 +0200, (Johan W.
Elzenga) wrote:
Dave wrote:
With reference to the data lost when copying JPG's,
is it the same when moving a file or not.
I assume it is the same because moving is nothing else
than copy and delete.
I am fairly certain that copying a Jpeg does not do any damage to the data.
It is only the application of compression during a Save that does damage.
Roy G
Roy, there is so many different views to this.
I have even seen a view years ago, somebody showing a jpg, proving that data lost only happen during the first or maybe the second, copy. Thereafter, it stays the same. I have seen other photos showing the way it keep on degrading. Being a 'lossy' format, the last seem to be more believable. You feel it is the compression doing it, and that make sense as well, because Tiff have no compression.
It all depends on how you do it. If you open a JPEG in an application and copy it by using 'Save as...', the image will be compressed again and that causes data loss. If you move or copy the image by dragging it from one folder to another, there is no data loss.
Thanks Johan. Would this (also) mean, copying at 'quality 12' there will be no degrading? Or is '12' still an amount of compressing? I love what you are saying, because it is going to have me dragging images.
With reference to the data lost when copying JPG's,
is it the same when moving a file or not.
I assume it is the same because moving is nothing else
than copy and delete.
COPYING - making an addiotnal copy
MOVING - moving the data from one place to other
The advantage of MOVING (if same drive) is SPEED and disk space.
How would I drag and drop (move) a file after modifying it in PS?
Thanks Johan. Would this (also) mean, copying at 'quality 12' there will be no degrading? Or is '12' still an amount of compressing? I love what you are saying, because it is going to have me dragging images.
Exactly the same message in different words. I accept this is the answer. How would I drag and drop a file after modifying it in PS?
On Fri, 16 May 2008 15:51:56 +0100, "Roy G"
wrote:
"Dave" wrote in message
With reference to the data lost when copying JPG's,
is it the same when moving a file or not.
I assume it is the same because moving is nothing else
than copy and delete.
I am fairly certain that copying a Jpeg does not do any damage to the data.
It is only the application of compression during a Save that does damage.
Roy G
Roy, there is so many different views to this.
I have even seen a view years ago, somebody showing a jpg, proving that data lost only happen during the first or maybe the second, copy. Thereafter, it stays the same. I have seen other photos showing the way it keep on degrading. Being a 'lossy' format, the last seem to be more believable. You feel it is the compression doing it, and that make sense as well, because Tiff have no compression.
On Fri, 16 May 2008 13:43:11 -0500, Joel wrote:
COPYING - making an addiotnal copy
MOVING - moving the data from one place to other
The advantage of MOVING (if same drive) is SPEED and disk space.
for in case you missed it, this is the question you should have answered:
How would I drag and drop (move) a file after modifying it in PS?
With reference to the data lost when copying JPG's,Copy will still keep a copy in your file. Move won't.
is it the same when moving a file or not.
I assume it is the same because moving is nothing else
than copy and delete.
In article ,
Dave wrote:
Exactly the same message in different words. I accept this is the answer. How would I drag and drop a file after modifying it in PS?
Click on the file icon, drag it wherever you like.
In article ,
Dave wrote:
Exactly the same message in different words. I accept this is the answer. How would I drag and drop a file after modifying it in PS?
Click on the file icon, drag it wherever you like.
Somewhere here is a misunderstanding.
I find no way, even with a combination of keys,
to drag a file from within PS and drop it onto a destination outside of it.
Example:
Unless I shoot RAW, my camera's default format is jpeg.
Opening it in PS, curving it and sharpening it etc.
Now I have 2 or more layers.
Merge or flatten the layers.
Unlocking the background layer, selecting all, trying different key combinations, dragging the layer icon, nothing allow me to drag this *customized file from PS, as a JPG, to elsewhere.
In article ,
Dave wrote:
Somewhere here is a misunderstanding.
I find no way, even with a combination of keys,
to drag a file from within PS and drop it onto a destination outside of it.
Ah. That's correct; you can't.
Example:
Unless I shoot RAW, my camera's default format is jpeg.
Opening it in PS, curving it and sharpening it etc.
Now I have 2 or more layers.
Merge or flatten the layers.
Unlocking the background layer, selecting all, trying different key combinations, dragging the layer icon, nothing allow me to drag this *customized file from PS, as a JPG, to elsewhere.
Nope; you have to use Save As to save a .psd file, if your goal is to create a .psd. Doing this will not degrade the image. You degrade the image when you open a JPEG and then re-save it *as a JPEG*, because JPEG compression is lossy.
Thanx tacit. This brings us back to what Roy, you yourself on other occasions, Johan and many more people said: Save as TIFF and convert to JPG only when necessary.
In article ,
Dave wrote:
Thanx tacit. This brings us back to what Roy, you yourself on other occasions, Johan and many more people said: Save as TIFF and convert to JPG only when necessary.
What that means is this:
Say you have a JPEG. You want to make changes to it. So you open in in Photoshop, and you edit it, and you save it as a JPEG again. Then tomorrow you say "Oh, I wasn't finished working on it." So you open it and make more changes, then save it again as a JPEG. Then you're like "Hmm, maybe I need to change the color a bit." So you open it, edit it some more, and save it as a JPEG.
The result will turn to mush, because you've re-saved it as a JPEG several times, losing quality each time.
Instead, open you file, edit it, and save it as a TIFF or a PSD. Then if you decide to change it again, you open the TIFF or PSD, edit it, and save it again. Only save as a JPEG when you are absolutely 100% sure you are done, and when you need to have a JPEG and absolutely no other file format will do. Keep the TIFF or PSD handy in case Fate proves you wrong about being done.
Photography, kink, polyamory, shareware, and more: all at http://www.xeromag.com/franklin.html
Yes that is how I work a file too
shoot jpg> open in PS>work on it add layers etc, I always use the original as my bottom layer >save layered PSD in case of changes , and USE SAVE >PSD from dropdown
no need to use "save as"
(no change is made to original file)