What is the difference between halftoning and dithering?
As I understand it, halftoning is the process of taking an image with a given color range (as defined by the colorspace) and blending the colors to form an image with a smaller range of colors. Ho...
photo editing - Photography Stack Exchange
Jan 7, 2021 · I'm trying to get the best possible scan of a CD cover (although this would apply to any print media using CMYK halftoning). With the highest setting on my scanner (3200dpi) I quickly run …
How much is the depth of field of Weegee's "f/8 and be there"?
May 4, 2023 · Thanks to @ZeissIkon, the halftone screen they used is 72 lpi. That is about 2 lp/mm. And "½ mm viewed from 20 inches" is also about 2 lp/mm. So the printing resolution is sufficient for a …
What is the name of this texture/where can I find it?
Apr 28, 2019 · Here is a (very coarse/greatly enlarged) halftone screen example (shown at 45° screen angle) of a flat tone: Here is a moire effect of several screens causing rosettes: Here is a different …
post processing - What is the stippling effect used in newsprint and ...
Image → Mode → Bitmap and set your output resolution. Under Method, select Halftone Screen from the drop-down. Click OK. Select a Frequency value for the size of the dots you want; the lower the …
How were photographs printed in newspapers in 1929?
Jan 25, 2015 · This is an advert from 1929 I am curious as how this and other similar things were printed back then. How were the images printed on the advert? Seems to me like this wasn't possible back …
artifacts - What caused this pattern of lines (moire?) in this picture ...
Oct 17, 2015 · I have scanned this photo from a book that's printed with color ink, but the picture is a black and white one. When I scanned it with Vuescan as a color photograph I get vertical lines like I …
film - Trying to determine potential causes for boxy (digital ...
Aug 11, 2018 · The pictures you want to copy are “halftone” images. The original was fractured into countless dots of ink that either vary in size or vary in spacing or both. The halftone method is the …
Why do we use RGB instead of wavelengths to represent colours?
Jun 4, 2017 · Mentioning it because it hasn't been mentioned in other answers: we don't just use RGB to represent colour in computer systems. It's the most conventional one since it matches the "native" …
Why is the scanner speckling the images? [duplicate]
They are halftone patterns used in printing. You cannot overcome the limitations of the subject matter. The fact that you have a great scanner is the reason why these imaging artifacts are so obvious. …