Out of interest, what filter were you using??
These filters seem to have worked pretty well! Numbers 1 & 3 are the best, in my opinion because of the superior composition.
The only thing I noticed (which seems a little strange) is the amount of banding in the bokeh. I wonder if the cheap filters introduced this? Or if it appeared in the resizing/compression?
Interesting post either way!
Sorry, I've just noticed what camera you have. Silly me, its a bridge. They tend to have super macro settings built in. Did this screw in macro allow you to keep further away from the subject?