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500 speed?


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#1 Phillip Mosness

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Posted 06 February 2013 - 03:38 AM

Possibly a silly question, but after years of using it, it just occurred to me that Kodak went with a 500 speed film instead of 400, which would be more natural in terms of stops than 500. 50, 100, 200, 400, 800 etc.
Is there a particular reason for this? Was it because it was the fastest they could get with the best of grain structure possible?
I might as well ask the same for 250 D
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#2 Dirk DeJonghe

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Posted 06 February 2013 - 06:43 AM

Probably more a commercial question than a technical one?
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#3 Chris Burke

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Posted 06 February 2013 - 06:47 AM

I think that you have almost answered it. It seems to me, and it is pure speculation on my part, that the speeds are the "ideal", offering maximum flexibility, from fine grain to maximum sensitivity. It is hard to think of a more flexible stock than 5219.
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