Dot Gain...

[prepressDog]

I need to get better control on dot gain.
We guess to much...

Is there a good read on avg. dot gain for sheetfed offset?

What are most peoples avg. dot gain??

How I was show was to get film into cal. 30 reads 30, etc.
Then for dot gain or prod. manager jacks the exp up from 7 to 9. This works most of the time.
But, a lot of the time stuff looks light. Were not a true 4cp shop. We run on 2 color press w 2 passes.

I know we can setup profiles, etc. This is what I want to do....I'm sick of guessing.
Were always Soooo busy, we never have time to do shit.
Please Help!

[born2print]

VERY SHORT ANSWER:
20% gain at midtone.
 

[kermit]

Take a look at GRACoL 7 site:
http://www.gracol.org/
You will find lot's of info there. Dot gain depends also on paper, LS, and ink used on the press. Mostly is not the same as it is a curve. Meaning 50% can be 68% if you have 18% dot gain but 30 will be less than 48%. Take a look at GRACol process as it very good.