QTR-Quadtone RIP

The plot is at;

http://groups.yahoo.com/group/QuadtoneRIP/photos/album/303049487/pic/357735120/view?picmode=&mode=tn&order=ordinal&start=1&count=20&dir=asc

Ross
--- In QuadtoneRIP@yahoogroups.com, "rossfmj"  wrote:
>
> Thanks David, that's been very helpful, I've now made a chart and can see what you mean.  I'll try and post the chart.
> 
> I think I made the mistake of chasing the numbers way beyond any useful limit and picked the high point of the curve, a fair way along the section with little increasing value.  Looking at the chart I can see the useful point should be around the 30%-40% mark.  I'll set to this and see where it gets me.
> 
> Ross
> 
> --- In QuadtoneRIP@yahoogroups.com, "David"  wrote:
> >
> > Ross,
> >     As an example, I have just uploaded an image of a graph of densities I measured with UT-14 cyan on Ilford GFS:
> > 
> > http://groups.yahoo.com/group/QuadtoneRIP/photos/album/499015501/pic/list
> > 
> > These were printed with a 50% ink limit, but the numbers on the horizontal axis are corrected to a maximum of 100%.  As shown in the graph, there is a nice smooth increase up to about 32% ink density, and then a more erratic increase.  In my experience, it is counter productive to try to use anything beyond the smooth part of the curve.
> > 
> > David
>