I'm a bit late here, but i also used to use an Oly TCON, but this was the 14B. There are different TCON 14's. This one has a 62mm mount thread, and i used a 55mm > 62mm stepup ring for my Fuji S5600.
I got great results with the 14B - some of the photos are in my image
Gallery
I sold the Fuji on, since i now use a pentax K10, though i still have the TCON. It fits nicely on the end of my 62mm thread Vivitar 100-300 without stepup/down rings, and gives me an effective FL at full tele of 435mm