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Peter Kuran

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About Peter Kuran

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    Digital Image Technician
  1. Tri-X anomaly in photographing nukes in the 1950'sI have been working on a project for a few years now in researching atomic testing photography from the 1950s and 1960s. There is a certain type of photography done on a camera called the Rapatronic which was developed by EG&G (Doc Edgerton's company). The Rapatronic took single shots. Two type of rapatronic cameras were developed. The original camera which has a basic exposure of 4┬Ásec photographs the image onto a 3x4 glass plate. The newer Rapatronic (developed in 1956-1957) had a basic exposure of 5┬Ásec and was imaged on 3x4 sheet film.
  2. I have been trying to figure out the dimensions of some old 16mm film to determine if it has shrunken. It seems there has always been a short pitch and long pitch for 35mm (i.e. .1866 vs. .1870). But in reviewing some old documents from the 1950's, I have only found documentation for long pitch 16mm (i.e. .3000 vs. .2994). Was short pitch 16mm introduced later than the 1950's? The documentation I have been looking at are: H-1 Eastman Motion Picture Films 1958 and Photo Lab Index 1946.
  3. I am trying to find film data sheets (H&D curves etc) on some very old motion picture film stocks (circa. 1950's to 1960's) and any information on some old exotic film stocks: Black and white stocks: Ansco Supreme type 153 - panchromatic Ansco Ultra Speed type type 356 - panchromatic Dupont Superior 1 type 104 - panchromatic Dupont Superior 2 type 126 - panchromatic ID-2 (appears fairly medium speed) my guess is maybe Infrared Dupont? HRHS orthochromatic (low speed) Color: ECT Eastman Color Tracking type 1229 (lightish brown to neutral color base)
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