question about ISO vs EI

["Christina Z. Anderson" <tracez@xxxxxxx>]

Ok, I got the following out of Paduano's book, and I just am puzzled:
     "With no filter, Kodak has a suggested ISO of 80, and Konica of 32.
With a no. 25 Kodak is 20, Konica is 8.  EI for Kodak is 200, for Konica is
50-64, except under low light for Konica use an ISO of 100. "
      How does the EI relate to this suggested ISO; do you rate the film in
camera with the 80 or the 200?  Joe, I know you are on the list, so were you
saying that Kodak says to use ISO 80, but most people use EI/ISO 200?
Please explain.  I just cannot seem to get the bottom line of what the
general rating of HIE and Konica is:  tell me if this is correct:  set the
ISO in your camera to 200 (I am using a rangefinder, BTW which is not TTL),
and open up two extra stops for the addition of the red filter, so, in
essence, you are exposing the film with the filter on at 50.  Well, I did
this with Konica, I exposed it with an ISO of 50, compensated with the 29
filter factor of 3 stops so that I was shooting at an ISO of 6, and my
negatives were basically bulletproof and unprintable.
      I'm sorry I am so dense on this point, but the exposures on this forum
have also run a gamut of 50 to 10,000 (even tho the last was thought to be
impossible). Is it that all the adjusting comes at the development push/pull
stage?
      Thanx for dealing with my dull mind; I'll get it straight soon,
hopefully, with your help!
Chris

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