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Dear Michiel and Tariq, thanks for your input. It must be the preview JPEG as you mention. I don't mind the post-preview JPEG file for landscape and architecture but for close up portraits, I prefer the neutral starting point of the JPEG preview. It is not a problem to return the files to their neutral status, I just thought there might be a quicker way.
The post-preview JPEG image, on portraits, darkens the image, does something funky with the white balance, adds too much contrast and sharpness, etc. It turns an otherwise friendly looking face into a gritty, dark looking portrait. I often want that effect, but not on women (usually). To counter this, I usually slightly boost SPP fill light, decrease sharpening, increase exposure, and play with the white balance. That is just my experience. Thanks for sharing yours!