super8 processing

[godjula]

Hello,
I am French so I Hope you could understand me.
I use to process B&W S8 and 16mm reversal film in a Russian tank.
But next time I would like to process S8 B&W in NEGATIVE (make a negative)in order to print it or blow it up.Thus my question is:
Do I have to expose the film with twice the usual ASA (for example 400ASA for a TriX?)?
And if it's true how do I do knowing that I don't have any apparatus in order to mesure the light but only my S8 camera with manual and automatic exposure and even something to correct the automatic exposure?
thank you very much
Julien

[rollemfilm]

Your questions can be answerd by Martin Baumgarten:

[email protected]

[Nigel]

I shoot at 100ASA when I process Tri-X as a neg. The thing is--when you blow up to 16mm it is better to have your S8 a positive. You get rid of one generation. Good Luck