However, researchers have shown that " Mackie lines " are not part of the Sabattier effect itself.
2.
Nonetheless, in order to emphasize the dramatic aspects of the " City of Shadows " series, he sometimes uses the Sabattier effect called the Mackie line.
3.
There is a further characteristic effect : a narrow band or rim of low density, called the Mackie line, is formed at the boundaries between adjacent highlight and shadow areas.