Digital Imaging and Computers Forum

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  1. #1
    Junior Member
    Join Date
    Jul 2007

    Does enhahcing digital photos reduces quality???

    Hi guys!

    I have a habit of enhancing my digital photos (jpeg format) in a image editing software. Does this degrade the quality of the photos???

    Thank you.

  2. #2
    Senior Member Medley's Avatar
    Join Date
    Nov 2006
    Hillsboro, OR, USA

    Re: Does enhahcing digital photos reduces quality???

    The short answer is yes. In reality, some commands discard information, and some do not. Generally speaking, the commands that affect the entire image, such as Levels or Curves, are more lossy than say, a subtle color adjustment.

    Still, even with jpeg, you have some room to play. The human eye can discern about 200 variations in tone, and jpeg starts with 255.

    One of the biggest advantages of using the Raw format is that it starts with 4096 variations in tone, and several of the first edits are lossless. This gives you a huge amount of leeway.

    With jpeg, the most important thing you can do to preserve your image is to only resave the image one time. If you're goint to be doing edits over several days, then save the image in psd format until you're sure you have a final version.

    Hope this helps.

    - Joe U.

  3. #3
    Senior Member mn shutterbug's Avatar
    Join Date
    Jun 2007
    SW MN

    Re: Does enhahcing digital photos reduces quality???

    You can also save it as a Tiff. Tiff files are also lossless.
    Canon 30D X 2, Canon 100-400L, Thrift Fifty, Canon 18-55 IS 3rd generation lens plus 430 EX II flash and Better Beamer. :thumbsup:

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