Ahh Ok, I understand now, as I can see several elements which have altered, (e.g. sharpening, details in the darks are now visible etc, as well as the colour change) A 'preset' in essence, is a series of filters put together to make an 'action' (you can make your own actions in PS, of which I often do, when I want to edit a 'batch' the same way)
In L3 I suspect its instant?
In PS, you can also obtain 'actions' made by others and I have a few myself but the annoying thing is, you don't have a 'preview' they're just called a name (with my own, I 'try' to call them something that actually makes sense, like 'Heavily contrasted B/W=Black and white but some of the same people come up with are just random, like Kahwe )
But the positive thing is, all the actions make individual 'layers', of which you can tweak after, if you add a layer mask!
Some of the actions make tons of layers but that's also a good way of learning, as you can turn each layer off individually to see what difference each one makes.
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