halftone % quaestion

[whitewater]

I do artwork seps for my father in law. I can do halftones with the normal 22.5 and whatever else i have it set at.

My question is the previous artists he worked with just said tell them the  percentages, like 10% and 20% for example and whola! they halftones it to what he wanted..

I'm not awesome at this but what does that mean? and how do I go about doing that?

hopefully someone understands what I am talking about.

Thanks

Rob

[mk162]

what format is the art in?  halftones are a percentage of color, so the 10% or 20% is the percentage he wants of that color.  Does he do his own films?

[myseps]

in channels, select the area you want to be a halftone.

Using levels, drag the "output levels" bar to the right

you can see the percentage in the info pallet

[Dottonedan]

Scott's examples are on target if using Photoshop.  What program are you using?

[3Deep]

While on this can I ask a question here...everyone is using 22.5 angle on all plates I,ve used it allso, but for some reason I did a set of films, I forget if was a black plate or whitebase plate with halftones and the 22.5 would not work.  It was morie city, so I change that plate angle to 56 and it work just fine, have any of you every had this problem using all plates at 22.5?

Darryl

[squeezee]

Depends on your mesh size & tension, sometimes it just happens.

[whitewater]

thanks guys...He sends me crappy jpegs. LOL

I use photoshop and illy.. To tell the truth when he burns a screen he can't get real fine halftones. Its just not what he does.

What I did in the past for him was just change the artwork into gray scale then brighten it and change the angles on the halftones.

Thenk you for showing me the %..

I use mostly illy and have a ways to go in photoshop.

Rob

[stiggy]

If your screen mesh is at 90degrees to the frame 22.5 will work fine, also have been using 37 for C,,82 for M,  7 for Y and 52 for K for years for process and have never had any problems with Murry, Morry, or their brother Moire. lol