I was scanning an old Carte de Visite yesterday - a small photograph of some unknown Victorian gentleman with a beard that was far too large, and oddly misshaped. When I imported the scan into Photoshop, it applied, by default, some filter that I had been playing with the last time I used the programme. I was so taken with the result I immediately got rid of the original accurate scan and replaced it by the one with the wonderfully grainy effect. As I magnified the image more and more I became even more fascinated with the effect.
The possibilities, of course, are endless. I could move further and further in, and get more and more of that wonderfully worm-like grain. Excuse me whilst I explore the left nostril of this elderly Victorian gent.