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Old Aug 18, 2004, 7:16 AM   #1
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I don't want the image to digrade. Thanks.
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Old Aug 18, 2004, 9:10 AM   #2
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Photoshop or other editors don't support RAW mode. You need to pull it into a convertor that came with your camera and convert it into a TIFF, JPG, or what ever image format the softwaresupports. The advanatage of RAW mode over JPEG is what you can do in post processing (white balance adjustment, exposure compensation, etc.) It lets you have more control overyour image vs. JPEG where the camera does some post processingbefore saving in JPEG mode. So to sum up it does not matter if you shoot in RAW mode or JPEG, you can still convert the image into a B/W with no problems. If you want the highest quality you can get shoot in the highest JPEG setting or RAW.
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Old Aug 18, 2004, 10:14 AM   #3
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I heard that every time you edit JPEGand save it the image quality changes.

Is that true?
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Old Aug 18, 2004, 10:38 AM   #4
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First a correction. Photoshop 8 (CS) DOES support RAW. So RAW images can be loaded into Photoshop without problems.

JPEG is called a "lossy format," meaning that each time an image is saved, the very nature of the compression used, causes the loss of some data. If you load and save, load and save, then each time you do this the compression routine will lose more data.

TIF is a lossless format, meaning that no matter how many times you load and save the image, no data is lost.

RAW is not a format that you can save in (this is NOT literally true, but few programs will allow it). RAW is the equivalent of a negative in the film world, meaning that much information that would normally be used in camera and permenently embedded in the image (such as White Balance, sharpening, etc) can be altered later.

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Old Aug 18, 2004, 11:14 AM   #5
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Does the quality of the image changes drasstically or just slightly?

Is it visible change from just saving once or twice?



Thanks
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Old Aug 18, 2004, 12:06 PM   #6
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Depending on the amount of JPEG compression, the cumulative effects of loading and saving can be very noticeable. The most noticeable effect is the appearance of little "blocks" or square artifacts. These are most noticeable around edges and borders. These effects can be removed to some extent by Photoshop or Paint Shop Pro but the process is not 100% effective. It will remove some of the artifacts but it also reduces the sharpness of the image.

When you save in jpg format, select the "Best quality" least compression format.

Photoshop Elements will read raw or NEF files. The new version of Paint Shop Pro (version 9-not released, yet) is supposed to support raw formats.
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