This is a great thread, and as someone who is relatively new to photography as a serious pursuit (as opposed to just taking snap shots) well worth reading. I do have one quibble though. With respect to everyone here, I don't believe that anything done before the shutter release is pressed can be considered editing. At least how the word is normally used, editing is taking a raw product and turning it into a finished product. I am open to the idea that developing can be considered part of the editing process... but I would tend think it really begins with uploading, scanning or printing the image; thats the the point in time when the photographer has a raw image to work with and through all the things that can be done in the darkroom (or the computer) transforms it into the work that s/he wants.
I also think that this discussion shows one of the strengths of photography; you can approach it like Henri Cartier-Bresson where you want to show what comes out of the camera as much as possible or Ansel Adams where you treat the negative as raw material to be shaped. I don't think either approach is wrong just as it is not wrong to want to shoot a fully mechanical/manual film camera or a fully automatic digital camera.
Just my thoughts.
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Bill