Hi, according to the data sheet The Reciprocity correction times for the Mummy 400 Black and white film are.
Lengthening of exposure: 1/1000s – 1/2s= 1x | 1s= 1.5x | 10s= 6x | 100s= 8x
Correction of aperture: 1/1000s – 1/2s= 0 | 1s= -1 | 10s= -2.5 | 100s= -3

Please note: Since I never shot this film, I can not verify these datas. They are just what I found out doing a research on the web.

#mummy400 #reciprocity #correction #mummy #400asa

Hi Kenny, sorry for your inconvenience! I somehow forgot to publish the part about the Kodak colour films. I corrected that now you will find the answer in the article.
but just so you do not have to search around here the answer i got from Kodak:
“For our professional colour negative films, no filter correction or exposure compensation is required for exposures from 1/10.000 second to 1 second.
For critical applications with longer exposure times, it is best to do some testing under your conditions.”

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