Digital BW, The Print

Hi Graham,

Thanks very much. I did some testing this weekend, naively assuming my 
prints would be near to perfect. I used both your test image and 
Tyler's offset gradient image.

My setup is: Epson 2100 / windows / QTR / resolution: 1440 super / UT3D 
inkset/ Epson Enhanced Matte.

The offset gradient image printed fine. 

But your spherical images, especially the top left (dark center light 
rim), show some slight circular banding. My feeling is that this is not 
a QTR linearization error. The banding is quite regular (several bands, 
almost equidistant). I suspect it is a dithering issue. I played around 
with the QTR dithering settings and (I think) I saw some slight 
changes, but not a real improvement.

Any suggestion how to reduce this? Or just live with it (I never 
noticed it before)?

Another question: for an optimal test I need to convert the image fram 
Gamm 2.2 to Gray Lab. To exclude any artifacts in the transformation 
could you post the original 16-bit Tiff file as well?

Thanks

Joost