Hey Slej:
Welcome. Glad you dropped in. You asked some good questions that others (including myself) have wondered about. I appreciate you taking the time to post them.
Take the following with a grain of salt since my traditional artistic skills are zilch.
RE: I've been trying to find a technique or tutorial for applying a realistic oil-painting look to a photograph, but have not yet found anything that suits my needs.
That makes two of us.
Doing an oil-simulation on faces is extremely difficult. The only tutorial I’ve seen that’s moderately decent the one at
www.MyJanee.com.
RE: Most of the actions/plugins seem to fail in the area of brush stroke, paint textures, etc.
Agreed. Some plugins and actions seems to render better results on scenery-type images where there's more detail with which to work.
Are you familiar with Mike Finn’s site? If not, he’s done some remarkable things with
PS actions, many of which are free.
Some of his newer ones “set up the environment” (that is, build the layer stack) and it’s up to you to provide the custom smudges or brush strokes.
Mike Finn's site:
http://homepages.slingshot.co.nz/~mikefinn/action.html
RE: Is the only way to get realistic brush strokes to use a tablet?
I’ve seen some very convincing work done without a tablet, so my opinion is a tablet is not a requirement. Those who have tablets (and know how to use them) swear by them.
RE: How does one achieve three-dimensional textures (the classic ridges and depth of oil paint brush strokes) in a two-dimensional image? Would I have to paint in the highlights and shadows of every single brush stroke in order to replicate the sheen of oil?
If you’re talking about painting an image from scratch (not via transformation of an existing image), then I would say yes.
Based on what I’ve seen in the past year and a half that I’ve been fumbling with this sort of thing, I’ve never seen a plugin or action that suitably takes the place of manual brush strokes. Painter or Right Hemisphere's Deep Paint are going to provide the functionality you're looking for.
RE: Photoshop, Painter
I, too, have access to Painter but have barely cracked it open, but it appears that some Painter settings take texture / shadowing / highlights into account. I’ll let the Painter knowledgeable folks be more specific on this one.
While the PS7 brush engine is a huge leap over previous versions, Painter runs circles around
PS in this area.
Other resources:
* No books I’m aware of.
*
www.WetCanvas.com is very good.
*
www.ArtSig.com (fairly new site, so forums just getting started)
*
www.casmaran.com (Cricket Blake’s site)
Hope this helps a little.
~DannyR~