Yule-Nielsen Effect and "optical Dot Gain"
The Yule-Nielsen effect, sometimes known as optical dot gain, is a phenomenon caused by absorption and scattering of light by the substrate. Light becomes diffused around dots, darkening the apparent tone. As a result, dots absorb more light than their size would suggest.
The Yule-Nielsen effect is not strictly speaking a type of dot gain, because the size of the dot does not change, just its relative absorbance. Some densitometers automatically compute the absorption of a halftone relative to the absorption of a solid print using the Murray-Davies formula.
Read more about this topic: Dot Gain
Famous quotes containing the words effect, optical and/or gain:
“No being exists or can exist which is not related to space in some way. God is everywhere, created minds are somewhere, and body is in the space that it occupies; and whatever is neither everywhere nor anywhere does not exist. And hence it follows that space is an effect arising from the first existence of being, because when any being is postulated, space is postulated.”
—Isaac Newton (1642–1727)
“The convent, which belongs to the West as it does to the East, to antiquity as it does to the present time, to Buddhism and Muhammadanism as it does to Christianity, is one of the optical devices whereby man gains a glimpse of infinity.”
—Victor Hugo (1802–1885)
“The honest Man has, I know, that modest Desire of Gain which is peculiar to those who understand better Things than Riches; and I dare say he would be contented with much less than what is called Wealth in that Quarter of the Town which he inhabits, and will oblige all his Customers with Demands agreeable to the Moderation of his Desires.”
—Richard Steele (1672–1729)