Hi all, I missed the original discussion, but thought I would weigh in 
just in case:

I love strathmore 500 series drawing paper 1 ply, and trace over my 
composition with a light table that I have built in to my drafting table.

I scan at 1200 dpi as a BitMap file, thus avoiding having to worry about 
grey background.

For web postings, I reduce dpi (or ppi if you want to be fussy about 
terminology) and save as JPG.

To submit to journals, I provide a 1200 dpi TIF file, but reduce the 
size of the image to fit the width of the journal publishing the 

link to detail of inked drawing at:

Linda Ann Vorobik, PhD Botanist, Botanical Artist, blogging at:
PO Box 866, Lopez Island, WA 98261; 360-468-3188; cell 510-520-2423

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