One thing.. Greyscale is still black and white.. it just allows minute changes in the image. An excellent example of what can be done with "Black and White" imagery, is the work by Ansel Adams. One of the advantages of using B&W is that, if you make the image slightly "grainy", you almost automatically get a "gritty" look.. useful for highlighting, for example, just how bad slum areas are.. or how dirty some cities are, (usually, this is for pointing out pollution). Conversely, Greyscale can be coupled with filters to give the images an "old" look. Greyscale/Black and White, are still being explored today, with photographers, trying for particular emotional effects. Lou.

"..... and that was when things got interestiing."