Veeness/Larry,

Thanks for the comments. I did a search on Google for Negative images and there were only a few re film negatives. The one I chose had ducks. I did some photo healing to remove most of the visible ducks, just wanting an undestingishable negative background (I had previously tried to recreate it using fractal fills but couldn't get the desired effect). The remainder of the image, sprocket holes, text numbers and the "N" are vector.

As for your point Larry, maybe. I just used the colour picker to select the whitest part of the original bitmap. Negatives, now a thing of the past, were never easy things to fathom But I take your point, it would be difficult to use as a real Drop Cap.