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This has only happened once in my work to my knowledge.
When editing a picture (CMYK, 300dpi, 15 cm wide x 11.5 cm high) by using ‘levels’, a horizontal black line one pixel wide appeared. This did not run across the entire picture, but started and finished within the bounds of a lighter area. The line is composed of the same CMY colours (roughly 9%, 8%, and 3% respectively) as the area that the line runs across, but the black has increased from 0-1% to 100%. The line was not created inadvertently with a drawing tool, but is so precisely positioned as not to have been seen as an error at the time – ie it looks as though it’s meant to be there.
The client (a photographer) was quick to spot that it wasn’t meant to be there, and is using this as a reason why he shouldn’t pay for the advertisement in which the picture appeared.
Any clues?
Regards
Martin
When editing a picture (CMYK, 300dpi, 15 cm wide x 11.5 cm high) by using ‘levels’, a horizontal black line one pixel wide appeared. This did not run across the entire picture, but started and finished within the bounds of a lighter area. The line is composed of the same CMY colours (roughly 9%, 8%, and 3% respectively) as the area that the line runs across, but the black has increased from 0-1% to 100%. The line was not created inadvertently with a drawing tool, but is so precisely positioned as not to have been seen as an error at the time – ie it looks as though it’s meant to be there.
The client (a photographer) was quick to spot that it wasn’t meant to be there, and is using this as a reason why he shouldn’t pay for the advertisement in which the picture appeared.
Any clues?
Regards
Martin

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