Re: [OT] Dot shape prevalence
Re: [OT] Dot shape prevalence
- Subject: Re: [OT] Dot shape prevalence
- From: "RS" <email@hidden>
- Date: Mon, 10 Oct 2005 08:55:45 -0700 (PDT)
- Importance: Normal
Richard,
I recall someone mentioning to me that one of the advances Hell made was
producing slightly irregular dots, much like the p-noise in the Scitex
system to which Matt and Glenn referred. Apparently this provided for
smoother gradations.
Can anyone confirm this assertion I heard of Hell?
email@hidden
--------
Matt Beals wrote:
Scitex always had such nice screening. And if it wasn't good enough, you
could always build your own screen set with their Excel spreadsheet.
Although adding a little extra p-noise seemed to work well.
--------
Richard Corbett wrote:
Are you sure you are not confusing Scitex with Hell who had a most unusual
dot shape - rather like freshly dug potatoes - and brought about by their
inability to produce 30 degree screen angles which in turn produced a most
noticeable and entirely unorthodox rosette.
--------
Glenn Huish wrote:
As Matt mentioned, You could build a screenset at any frequency you
wanted, using a simple, vendor supplied spreadsheet. While you're at
it, go ahead and assign essentially any angle you want on the 360 degree
axis (we tend to use 7.5 degree shifts), infinitely adjust the ratio of
dot length to width, and if all else fails and you *still* got hard
breaks somewhere, add any amount of noise you need if you just need to
break up the regularity of the screen a bit.
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