Originally posted by MossyRocks How much extension tube did you have it hanging off of?
Also in the description you said the exposure was 1/6s but in the picture it looks like it is probably .6s or that watch is running really fast. I should take a picture of one of my running mechanical watches as I do like the effect.
I seem to recall it was about 28mm or 35mm of extension tube. The action of the watch means the second hand sweeps rather than increments by the second so it looks like it moved twice during the exposure time, so thinking about it you could be right with 0.6 of a second as opposed to 1/6th of a second.