Auto enhance

Maybe to help clear things up a little, some history about auto correction, because Adobe has developed multiple kinds over the years, and they analyze images in different ways.

20 years ago Photoshop added Auto Color. This feature is tied to the Levels and Curves commands. It treats each image differently, but the analysis is algorithmic only. You customize the method and the clip points for the auto correction, and if you are going to batch many images, you should carefully set up the options. Bruce Fraser’s 2002 article explains this: Don’t Underestimate Photoshop’s Auto Color. If you ask old Photoshop veterans about “auto enhance,” this is the feature they will probably think of. But because it’s purely algorithmic, it’s very sensitive to whether each scan’s black point and white point was set correctly when scanning.

Several years later, Adobe Camera Raw and Lightroom Classic added their own Auto Tone feature that was algorithmic and not customizable. It was not so great, but recently Adobe upgraded that Auto Tone feature with machine learning, and that is now very good — the best auto correction feature in any Adobe application, better than anything in Photoshop itself. Note that Auto Tone does not correct color; a separate Auto White Balance feature does that.

If you like how it works in Camera Raw, you could batch correct your scans in that. If you wish you could customize it, you will have to use it through Lightroom Classic and customize the settings using the Personalized Auto Tone plug-in. (Camera Raw can’t use plug-ins.)

Whichever method you use, definitely test it on small batches first, to figure out which methods will work best with the way the images were scanned.

Also, because you mentioned this, I don’t think there is any Adobe feature that can do automatic sharpening by analyzing individual images. Camera Raw and Lightroom Classic do provide output sharpening on export, but it will be the same value for the whole export job.

Maybe you could give a better idea of what you want to achieve by posting at least one unedited image and the result you want to achieve automatedly. 

Which processes do you use to achieve the result manually (Curves Layers, Levels Layers, …)? 

What do you mean by »auto sharpen« exactly? 

@Reddwarf4ever – Photoshop has many tools/commands, please indicate which specific ones you are enquiring about.

Photoshop does analyze each image, and the correction will be different on each file.  Jpeg files are compressed and depending on the image, how much correction is needed, and the level of compression (jpeg quality level) you may get artifacts, but not more compression unless you do save them without maximum quality jpeg setting.  If your file format will be jpeg.