by JimRaffel on February 21, 2006
Part 3: TVI in and of itself is not a bad thing: Back when TVI was called Dot Gain, I remember going into print shops and having pressman tell me “No, we don’t have any dot gain.” This was not ignorance (they knew they did), but instead a misconceived notion that TVI was a bad thing. I always countered this by saying that Dot Gain is not bad; however, NOT knowing what you Dot Gain is, is a bad thing. Think of it as trying to get from one city to another in a car without a map. We need to know where we are in order to get where we are going.
Coming next…Part 4. Density is king
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by JimRaffel on February 7, 2006
This is Part 1 of a 5 part series from Jim Raffel’s TVI notebook.
Part 1: Tone Value Increase (TVI) really is a better term than Dot Gain: My short answer for this is that a densitometer (or spectrophotometer acting as a densitometer) does not actually measure dots, so how can we really call it Dot Gain? Add to this the fact that some systems being used for proofing result in continuous tone images with no dots and my position becomes a bit clearer. Those on the SWOP committee that spearheaded the initiative to change this misleading term (which I resisted early one) should be commended. After all, when a 50% patch of a color increases to an apparent 65% patch of that color the tone value has in fact increased regardless of whether that patch is made up of dots or not.
Coming next…Part 2: GRACoL 7 & TVI
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