What does saturation do in Photoshop?
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Used well, it can be very helpful. Too much saturation can look unnatural or glaring. Too little saturation can look washed out or dull. You pick the level of saturation that looks best to your eye.
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Yes, used with skill the "saturation" function in Photoshop can make a picture look better. This function is often used to enhance scans from low quality scanners or images if the colors look in any way "unreal".
You can use the "saturation" function to selectively fade or augment the colors.
This function is also often used in combination with other filters or image enhancement tools like "sharpen", for example.
I have found this very useful website which is a "Adobe Photoshop User Guide for Beginners":
http://www.hku.hk/cc/document/photoshop/
Everything to do with the functions in Photoshop is very well defined and explained there.
I like to use Photoshop myself for high quality image processing and conversions. Once one has learnt to manage this software, it is really ideal for almost all image applications.
Hope, this helps!
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