Like you, Dale, my preferred resolution for images intended just for my own records were 300dpi. But I found that people who wanted any of them for publication required better images, and the coins would have to be re-scanned at 500 or even 800 dpi, so I made my standard images 500dpi by default. I do not convert to inches or mm but leave them described in dpi, bacause if I use 'canvases' of the same dpi I know they will appear on the page as lifesize unless they get adjusted. 800 dpi images and bigger make large files for storing and attachments to mails, so I avoid them unless they are needed for a special purpose, or are wanted by a colleague. I used to use monochrome, but now I save them as both monochrome and technicolour, because both are often needed for specific purposes. My 'usual' journal, the JONS, requires monochrome, but more and more publications printed in India (books, brochures, 'souvenirs' and newsletters) are nowadays printed in clour, so it is useful to have both. Very few of my coins have much in the way of very fine detail, so 1200 dpi is wasteful of storage space and scanning and manipulation time, so even if I needed them for some reason, I would probably not keep them after the job was done. Little bits of detail like Amit has bee showing us is a different matter, of course.
Barry
Poll