Excerpts from Canon Talk

Yellow-bellied Sapsucker

tonyinport wrote:
You said that you reduced contrast and saturation in the camera to avoid over processing in the camera. Could you explain that to me a little further? …
gail wrote:
I do the same with settings on most of the cameras I own. I’d like to hear Kenn’s explanation, though, so hope he’ll post it here…

Hi Tony and Gail,

I’ve written at some length about our use of “de-tuned” jpeg settings in-camera as well as my subsequent post-processing of them, in several previous threads here on DPR. The concept is simple and similar to shooting RAW. Here’s an excerpt from one of those posts:
http://forums.dpreview.com/…forums/read.asp?forum=1010&message=39877233

“…in many cases the color and saturation I develop in post may not be too different than would have been produced sooc using the default settings. The difference is, I make the choices. An over-saturated or overly contrasted image cannot usually be adequately recovered in software after the write. And the same is true of sharpening… once the scratchy artifacts are saved in the file by the in-camera jpeg engine, there’s no un-doing them in post.”

Here’s another with an illustration of detuned sharpening:
http://forums.dpreview.com/…forums/read.asp?forum=1010&message=37342216

“When the camera processes a file into jpeg format, it is applying a fixed preset amount of sharpening, contrast, saturation, color correction etc to the entire image… Every image is processed the same, regardless of any specific characteristics of that captured image. Further, the algorithms used by the camera’s processor are not as sophisticated as those available in Photoshop or other quality image editing programs. As a result, relying on the camera’s processing, either at the default settings, or worse at increased settings, will often produce images which are already over-processed and damaged beyond repair.”

The left pane is a 100% crop sooc (scaled to 50% for insertion into this post, but otherwise unprocessed). The right pane is the processed image scaled for web presentation. Notice that the difference is both subtle and significant. The original image appears somewhat soft at full-scale, but the details are preserved with good quality and the final image is both crisp and free of obvious noise.

You can find many more posts relating to this general topic here:
http://www.dpreview.com/members/5232460189/forums/bookmarks

Hope this is helpful,

Kenn

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