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codemartial/standardise_iso.py

Created March 13, 2014 04:29
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A filter to normalise ISO values to the nearest lower standard ISO
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standardise_iso.py
#!/usr/bin/python
import sys
limits = [0, 100, 200, 400, 800, 1600, 3200, 6400, 12800, 25600, 51200]
if __name__ == "__main__":
for line in sys.stdin:
iso = float(line)
print max([x for x in limits if x <= iso])
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