Adobe Community: JPEG vs RAW

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40. renomercury,

Jun 2, 2012 4:38 PM in reply to Bill Hunt

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Thanks Hunt.

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41. Rudy Chorvat,

Jun 4, 2012 5:33 AM in reply to renomercury

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RAW file has more potential , but if you don’t know what you doing, you probably get worst final image compare to high quality jpg.

If you do a RAW, and then you just press auto,……when you open it in editor,… you wasting your time.

But if you have an option to save RAW and jpg together and have lots of space available,… RAW is always good backup, if you later like to use image (file) ,has trouble in adjusting it,..not getting what you want,. you can got to your lab, or digital imaging technician, and they make adjustments for you from RAW…

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42. kraj8995,

Jun 21, 2012 4:10 AM in reply to Rudy Chorvat

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When any digital camera takes a picture, the likelihood is that the result will be saved as a JPEG file. This is what's written to your camera's memory card, and it contains all the data for that particular image.

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43. Silkrooster,

Jun 21, 2012 9:09 PM in reply to kraj8995

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kraj8995 wrote:

When any digital camera takes a picture, the likelihood is that the result will be saved as a JPEG file. This is what's written to your camera's memory card, and it contains all the data for that particular image.

The default is to save as a jpg, however all the data is not stored using the jpg format. Jpg is a lossy format and throws away data to compress the image. Raw format (the other camera format will save all the data for the image, minus any changes you do in camera)

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44. Hudechrome,

Jun 21, 2012 9:59 PM in reply to Silkrooster

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That's still not the truth. Raw saves all the data and stores the corrections as a separate file, to be applied when opening in PS. It also applies it tothe image opened in RAw but the data never is lost as a RAW file.

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45. station_two,

Jun 23, 2012 7:16 PM in reply to Hudechrome

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Larry,

ACR ignores all in camera settings of raw files with the exception of White Balance and Exposure. That is by design in Adobe Camera Raw. Other converters, most notably the camera manufacturer's own raw-conversion software may take the other in-camera settings, but not ACR.

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46. station_two,

Jun 23, 2012 7:22 PM in reply to kraj8995

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kraj8995 wrote:

When any digital camera takes a picture, the likelihood is that the result will be saved as a JPEG file. This is what's written to your camera's memory card, and it contains all the data for that particular image.

That last sentence is incorrect. Any JPEG recorded in camera will have lost some quality to some degree, depending on the level of compression applied. JPEG is a lossy-compression format, even at maximum quality. Whether the loss of quality can be perceived is a different issue.

Obviously, all camera sensors take raw digital captures, but not all cameras have the capability to record the raw images, so those that don't have the capability have to do a demosaicing raw-conversion in camera before they can record the image, as a lossy JPEG.

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47. Hudechrome,

Jun 23, 2012 10:30 PM in reply to station_two

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I know of what you say. To be clear, what I was trying to say is the data which comprises the RAW image is never lost so long as the RAW exists as RAW. Adjustments are saved as a side car and applied to the RAW data when opening in PS or when the image is displayed in a browser or database.

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Photography

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