How bizarre! I have an S8 in pieces in front of me as I type this- I bought it on ebay for 1 euro! but it had badly corroded battery compartment so I needed to sort it out:
and I too need a lens hood!
Its known as a B56 fitting and is shared with quite a few Zeiss cameras- Contarex to name but one. I know they made 2 different versions for the S8 cameras- one for the GS8 which had a wider 6mm zoom, and one for the S8/ES8 (?) which had the 9-36mm zoom. Which is lucky for us as either of those would be safe, but I'm not sure about the ones from stills cameras- if you can find one for a wide angle it will probably be safe. Theres one on ebay.com at the moment but its a square format which isn't much good with the rotating focus barrel of the S8.
I was lucky to get the eyecup but I wouldn't let them stop you from using your camera.
Out of interest with all this notch business, this camera has an interesting notch/light meter setting system.
A lever in the film chamber is moved down the front of the cart as you close the door:
This is geared to drive a drum which has a varying diffusion pattern printed on it:
This filters the light going to the photo cell a varying amount depending on the length of the notch/film speed in an infinitely variable way! Neat!
Very nice simple camera by the way, and lovely quality lens.
Mark