Seeking True Solarizing Film

[patrickholderness]

Hello all, I was wondering if anyone could tell me of a commercially available film that is capable of true solarization, e.g massive overexposure leading to an actual decrease in density on the negative. I am interested in achieving this at the moment of exposure, and not pseudo solarisation during developing. I understand that this feature has been eliminated from most modern films as its undesirable to most users, but can anyone point me towards a film thats still capable of this? I have attached an example of the kind of solarization I am referring to.

Thanks,

Patrick

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