Just in case anyone reading this (does anyone reads this I wonder?) short depth of field is where part of the photo is in focus and part is out of focus, ie a flower in focus with a blurry background. Long depth of field is where much more of the image is in focus. I'll put up a couple of examples.
Short depth of field.
Long depth of field
So for the rest of the month I shall be playing with long and short depth of field and uploading what I come up with.