Digital BW, The Print

Hello,

I am a new digital B+W printmaker employing an Epson 2450 to scan 
6x9 and 4x5 negatives into Photoshop 6 printing to an Epson 1280 
employing the MIS variable mix hextone inkset.

I employ the Silverfast scanning utility which shipped with the 2450 
allowing the software to determine a file size which for any given 
image size allows a resolution of 320 dpi. I utilize the custom 
settings on the Epson printer driver specifying 1440 dpi.

Although I have been pleased with the output for the most part, I 
have noticed a bothersome tendency to posterize dense mid and 
darktones such as might occur in a tree line or a bed of salt grass 
in a shore scene. I have noted that a boost in local contrast can 
correct this in large part, but this is a nuisance and compels 
increasing local contrast to the point where dark tones tend to 
merge.

Any explanation or suggestions would be greatly appreciated.

Thanks.

Stuart