A photograph, by definition, has been post processed, so I do post process my photos.
Some I remove backgrounds and features, through cropping or 'dodging', (to use an old term). But I do, now, label them as such.
What I dont do is add or substitute elements to the scene to enhance its visual appeal.
And I'm not criticising them that do. I just think that they should draw the viewers attention to the fact that it has been done. Because its fiction.
A little like a book that is fiction based on real life experiences is still a novel and would attempt to change history, if it was published as fact.

Look at it at their website HERE (google is your friend)
It should be a color-neutral translucent material.
The ExpoDisc has a layer of small pyramid shaped...hmm, light collectors.
No exposure compensation needed, the camera takes care of that if it's on auto.

I use one and they are better than guessing and better than auto (if you use it correctly).
Sure, you can fix it in post processing, but this gets you not only in the ball park, but close to a home run right from the start.

Hmmm... I see your point, but we really haven't demonstrated anything yet. We've talked about it a lot. The temp slider and tint slider work together to correct WB. Just because someone says it has too much red and another person says it has too much blue doesn't demonstrate anything. :-)

Regarding color and WB and what we should be looking for... The info is out there. Here's a link:

http://photography.tutsplus.com/articles/how-to-get-white-balance-correct-in-camera-every-time--photo-1093

In your case, as a natural photographer, you'll probably want to use a custom WB setup, since the camera defaults may not be as accurate. You can refer to your camera manual on how to set this up.

Jen. i got no idea how it could be controlled , it would be a banter site like all the rest where people just come to visit . and talk about what they got and what there going to get , it would have to be just a question and answer site. the question comes up with a number the answer comes back in with that same number . the one who asked that question gets back on types that number . and all the answer,s pop up that have been sent in . there will be no yanking back and forth . maybe a number to get hold of some body on a private thing like thay already . it all begins with a idea then gets tossed around to explore all the ways it will work or won't work .