Re: Colorsync-users Digest, Vol 5, Issue 209 - AM/FM screens
Re: Colorsync-users Digest, Vol 5, Issue 209 - AM/FM screens
- Subject: Re: Colorsync-users Digest, Vol 5, Issue 209 - AM/FM screens
- From: Steve Upton <email@hidden>
- Date: Mon, 16 Jun 2008 10:48:08 -0700
At 9:38 AM +0100 6/16/08, Lee Badham wrote:
>Hi List,
>
>FM screening has a higher dot gain than conventional screens. This is because of there are many smaller dots, each which can spread (more circumference), rather than a lesser number larger dots.
>
>So what the printer is doing is closing the ink ducts and reducing the solid ink density to reduce the dot gain back to the same as that of the AM screened plates. That surely will also affect the solid ink colours. Maybe because it won't affect the grey balance, the G7 people think this is ok. The solid colours are not affected by the screening technology used, because there is no screen.
It seems to me that curving the system differently is what would reduce the dot gain (or perhaps more clearly, the tone curve characteristics) to match AM system behavior.
While gray balance is very important, it seems that setting up the system correctly to anticipate the different tone characteristics of FM screening would be the first place to start.
If a printer is trying to compensate for TVI differences using ink ducts alone then there is a bigger problem here no?
It is certainly not the G7 way of doing things... or perhaps I'm confused by your statement.
Regards,
Steve
________________________________________________________________________
o Steve Upton CHROMiX www.chromix.com
o (hueman) 866.CHROMiX
o email@hidden 206.985.6837
________________________________________________________________________
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