View Single Post
Old 07-23-2016, 04:29 AM   #29
HarryT
eBook Enthusiast
HarryT ought to be getting tired of karma fortunes by now.HarryT ought to be getting tired of karma fortunes by now.HarryT ought to be getting tired of karma fortunes by now.HarryT ought to be getting tired of karma fortunes by now.HarryT ought to be getting tired of karma fortunes by now.HarryT ought to be getting tired of karma fortunes by now.HarryT ought to be getting tired of karma fortunes by now.HarryT ought to be getting tired of karma fortunes by now.HarryT ought to be getting tired of karma fortunes by now.HarryT ought to be getting tired of karma fortunes by now.HarryT ought to be getting tired of karma fortunes by now.
 
HarryT's Avatar
 
Posts: 85,557
Karma: 93980341
Join Date: Nov 2006
Location: UK
Device: Kindle Oasis 2, iPad Pro 10.5", iPhone 6
Quote:
Originally Posted by Psymon View Post
So I guess ADE has a problem with old engravings like that, where the lines are really close together, and that creates that moire pattern? Or more of an "interference pattern," if you ask me. Strange, though, as things look just fine in Photoshop, Sigil, and over on my iPad, it's only ADE that it looks like crap in. :/
Exactly. A moire pattern is an interference pattern and is, as you say, caused by the fact that these engraving achieve "grey scale" effects by drawing parallel lines very close together. You get exactly the same effect if you scan or photograph such an engraving at too low a resolution.
HarryT is offline   Reply With Quote