Hi Marko,
I had never heard of The Sabatier effect. I Googled it and came up with this description, "The Sabatier effect is produced by re-exposing a photographic material to light part way through the development process. This gives the resultant image both positive and negative qualities." Is this your understanding also.
Correct. Lots of people also (mistakenly) called this solarization.
As you may know my dscF717 is an infra-red (near IR) camera. When you say infra-red colour photography do you mean far IR?
..... john
Nope - I mean near IR, I didn't realize (forgot) your camera can do that.
So the reversal of tones ( neg art as you call it) does look like IR but it is not IR. IR (infra red) photography records tones we can't see. I shot BW film IR for a good 15 years - the hallmark aspect of shooting with it (for me) was that living objects emitted a glow. Here's an example. Neg art simply shows the opposite tones of any scene.
P.S. I can combine the the IR function of my F717 with the neg.art function to produce an odd kind of image; but I don't think that this is what you're referring to.
The F717 is an amazing camera for being 14 years old.
Here's another example of what it will do. (This house looks NOTHING like this picture in reality.)
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