108 and 72 the magic numbers for cinema blades.
In the video tests in an earlier post you can see high speed video of a projected 35mm image using a single aperture blade on a Kinoton. After analysing the video its possible to say with some certainty that the RATIO of light to dark is 3:2 respectively. So there are 3 units (or steps, … Continue reading 108 and 72 the magic numbers for cinema blades.
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