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05/19/2004 01:12:37 AM · #1
This is the picture I submitted to the opposites contest:



In response to the comments I received, I reprocessed the original, as follows:



As you can see, I was able to get detail from the original in the shadows and in the highlights that were not in my submittal to the challenge. I did this by blending layers containing an "underexposure," a "normal exposure," and an "overexposure" using Canon's file viewer utility to extract three different TIFF16 files from the same raw, at calculated exposures of -2, 0, and +2. Blending layers is against contest rules, so I could not get the details present without using software that does 16 bit processing better than Canon's file viewer utility.

I have since found such software for $49 for the Rebel. It is the PhaseOne C1Rebel 1.3.1. It allows you to do curves on the full 16 bit raw image. So I am ready for the next challenge, and I do not have to go out and buy Photoshop CS to get the capability I need to extract the data from the original picture.

Message edited by author 2004-05-20 02:16:02.
05/19/2004 01:35:23 AM · #2
See dodge and burn thread for some good info. Correct dodge and burn can also bring out details or make them subtle.
05/19/2004 01:53:35 AM · #3
I did not make what I wanted to say very clear. I received ten comments that were very helpful to me regarding what would improve my picture.

The Canon Rebel captures 12 to 14 bits per pixel. All of the information that I needed to get a good picture was spread out over 14 bits not 8. I am using Photoshop Elements which does not process 14 bit images, it only processes 8. I got the 8 bit image from the original using Canon's file viewer software, which does not allow curves to extract the detail at both the underexposed as well as the overexposed ends. You can pick either underexposed, normally exposed, or overexposed. You can not compress the spectrum and get detail from both ends.

While dodge and burn will help, those processes are also against basic rules, and they cannot bring out detail that is not in the 8 bits being processed.

What I am trying to say is that I bought a camera that captures a far better picture than I am able to manipulate with the software I had, and now I have software that will allow me to get the best picture I can from the raw without breaking contest rules.
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