Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "gp295" 
<graham@...> wrote:
> It did occur to me that maybe there was a problem in the initial 
> construction of the circular targets, but i don't know enough about 
> how Photoshop creates gradients to be able to comment.

Graham, I'd also be interested in hearing from others whether or not 
the banding might just be inherent in the gradient structure of PS.  
Your original post happened at a time I was building a profile with 
PFP 2.0 and UT-3D and the idea looked good as a test.  I'd built a 
larger (8x8) version to print thinking I'd be able to get areas wide 
enough to use a Colorvision Spectro on and I'd kill two birds: a 
visual confirmation of the ramp and a printout I could check for the 
L*a*b axes.  What I got at the 8x8 size before posterization showed 
very visible banding on my monitors and I gave up on printing at that 
point.  I use a ViewSonic 19" VP930b and a Mac laptop lcd, both 
calibrated with a Colorvision Spyder.  The Viewsonic shows in the 
neighborhood of 15 distinct bands and the laptop shows about 8 or 
so.  Any linear ramp I use doesn't show any banding, it's just in the 
circulars

Really don't know if it's a function of the gradient or my monitors.  
I be interested in hearing if anyone gets the same banding in a large 
size on a better LCD or on CRT monitors.  Or another method of 
building the circular gradient?  Robert.