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speed in film


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#1 freddie bonfanti

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Posted 17 November 2005 - 11:28 AM

hi all

whats the main difference between high speed film and low speed film? visually what are the quality differences?

thanks

freddy bonfanti
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#2 Adam Frisch FSF

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Posted 17 November 2005 - 12:20 PM

High speed film: More sensitive to light, more grain.
Slow speed film: Less sensitive to light, less grain.

It behaves just like Gain does on a video camera.
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#3 Charles MacDonald

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Posted 17 November 2005 - 09:43 PM

High speed film: More sensitive to light, more grain.
Slow speed film: Less sensitive to light, less grain.


The since the Slower film generaly has smaller grain - it may apper sharper also, although so muych effort has gone into improvemnt of Film in general in the last 20 years the comparison is only really valid within the same family of films. (EXR for example)

High Speed film, as it is more sensitive also tends to be affected by Heat, radiation, etc. more than slower film. You can probaly get away with longer storage from the slower film.
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