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Category: New Questions

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Photography Question 
Larry D. White

member since: 9/23/2008
 

JPEGs: When Does Loss of Quality Occur?


Can anyone tell me if there is loss involved with copy and paste in Windows XP when moving JPEG images from an SD card to a hard drive? Also, is there any loss involved when JPEGs are moved from one directory to another on the same drive? Thanks

9/27/2008 5:18:04 PM

 
Alan N. Marcus

member since: 3/4/2006
  No loss involved in the copy-paste operation. This is true regardless of operating system - regardless of location ... i.e. one director to another of one drive to another or SD to another SD or SD to hard drive.

9/27/2008 10:21:34 PM

 
Richard Lynch
BetterPhoto Member
PhotoshopCS.com
Richard's Photo Courses:
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  Just to expand on Alan's correct response:
Saving is when JPEG files have loss. In the process of encoding the file is evaluated, and that is when the loss occurs. In other words, you can copy the files and even view them without saving and you will not harm the image content.

9/28/2008 7:04:37 AM

 
Larry D. White

member since: 9/23/2008
  Thank you Alan and Richard, It was something I was trying to get an answer to on the internet without any success.
Larry

9/28/2008 12:24:22 PM

 

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