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DPChallenge Forums >> Hardware and Software >> Canon File Viewer Software and Photoshop CS
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05/19/2004 09:11:28 AM · #1
The Canon DSLRs in Raw mode capture more bits per pixel than 8, which is the most that my Photoshop Elements will process. As you can still make use of these additional bits using Photoshop Elements to enhance your pictures, I submit the following:

This is the picture I submitted to the opposites contest:



In response to the comments I received about lack of detail in the highligts and shadows, 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 calculated by the file viewer utility of -2, 0, and +2. Actually the camera only takes one raw image at one exposure at 16 bits. The calculated exposures are simply software conversions of 16 bits to 8.

Using Curves is another way of making the same kind of conversion, where you have much greater control of how much detail you get from highlights and shadows.

Message edited by author 2004-05-20 02:17:17.
05/19/2004 09:12:09 AM · #2
Continuing:

Blending layers is against contest rules, so I could not get the details present for the contest 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.
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