New Portra 400 - Reciprocity charts & push/pull?

Jeff Bannow

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Joined
Mar 1, 2007
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1,755
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Royal Oak, M
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Medium Format
Anyone have a chart or information on reciprocity corrections for the new Kodak Portra 400?

Also, how about pushing to 800 or 1600 ISO? Anyone tested this yet?
 

Athiril

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Feb 6, 2009
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Tokyo
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I've pushed to 1600, and shot at 1250-6400.

1250-1600 is best (obviously) @ 1600, actually it's excellent.

Other's have pushed to 3200 with excellent results. While it's perfect at 400, I would recommend overexposing a third to two thirds of a stop when pushing, ie: shoot at 1000 pr 1250 for a 1600 push, or 2000 or 2500 for a 3200 push, it really helps with the margin of error with even great metering.


OCAU Melb Photowalk Week 2 #6 by athiril, on Flickr
 

wildbill

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Nov 28, 2004
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Grand Rapids
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I've wondered why film manufacturers don't publish the reciprocity characteristics out to minutes. They spend all this money configuring a "new" film and leave things like this for speculation.
 
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