I went to the ICP show today. It was very interesting, though the quality of the photos was mixed. The WWII shots were the strongest, I thought.
What I found particularly interesting was that the Kodachrome shots apparently needed little adjustment, as the emulsion was still in very good condition, while the Ektachrome shots had degraded considerably and needed lots of correction, with the blues and cyans virtually disappearing in some cases. It seemed pretty clear which shots were recorded on which emulsion, in spite of digital post-processing (which was discussed in some detail).
Reading some of the correspondence also shed light on the difficulties Capa (and others, presumably) were having with the early slide film - there were several mentions of the need for UV filters (Wratten 2a or Ansco UV16, IIRC) and complaints of overall green casts, as well as some questions as to whether the emulsions were in good condition when provided. This, plus the additional time for development and costs of printing, made it much easier to understand why so few of the color images were published at the time.
Certainly a worthwhile show if you're in the area.
