Understanding Halftone It is helpful to understand that news, magazine and book images are magical. News images are comprised of black dots and white space. At a distance they look fine - up close, not so much. The printing technique is known as "halftone" - which converts grey tones into a series of dots. The human eye only has limited resolving power and, at a distance, is tricked into seeing these dots as continuous tone. "Halftone" then is a massive misnomer. There is only one tone: and it is black. The process is very ingenious: For lighter tones the black dots are small and surrounded by a generous amount of white space. For darker tones, the black dots are bigger and there is hardly any white space - maybe none. The secret is viewing distance - at a proper distance they look just fine.
Getting a news photo or magazine cutting ready to restore Some of the hard work in getting a halftone news or magazine cutting or a year book illustration ready to fix can be done when you scan. Here are five tips:
1. Adjust the scanner setting to "descreen" - this will lessen the impact of the dots. (If the thing asks you for # lines per inch ("lpi") most old newspapers printed at around 85, magazines maybe 133.) 2. Set the resolution to 600 dpi. 3. Place a black backing card behind the cutting on the glass before you scan - this will balance out the effect of any printing on the reverse side of the cutting. 4. If the cutting has folds or creases, align the crease so that it orientates in the same direction as the movement of the scan light - this will normally be from top to bottom and may require you to place the cutting at an odd angle on the glass. 5. If your scanner has a "sharpening" feature - turn it off and make sure you are scanning in "picture" mode - not document mode. Always scan in color even though the clipping is black and white (actually, probably quite yellow). So yes, you can get a proper photo from a news cutting and if you are careful it won't be too bad at all!
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June 2024
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