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I exposed a roll of Kodak Portra 400 at EI 160 by accident...


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I just wanted to share a little experience of mine, which may answer a question for someone at some point...

 

I recently ran a roll of Portra 160 through my Rolleiflex. Except...it wasn't Portra 160, it was Portra 400. But since I thought I had 160 in the camera, I exposed everything at EI 160 - 2 stops overexposure. I didn't say anything to the lab - they just developed it as ISO 400 film. Everything came out perfect. I can't post an example as they are all people shots and I can't really post them online, but if anyone does the same at some point, and is wondering what to do, well, I wouldn't worry.

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Yes, that is usual for color negative films. They have a fairly low Gamma, about half what would be usual for black and white films.

This allows for about one stop underexposure, and 2 or 3 stops overexposure.

 

It does mean that in printing, or scanning, you have to get the exposure correspondingly more accurate, and also the color balance.

 

When selecting filters, you select the filter of half the optical density and opposite color needed to correct the print.

 

Kodacolor was very popular with simple cameras going back many years, and through the instamatic and pocket instamatic years.

 

When cheap point-and-shoot 35mm autoexposure cameras came out, and then autoexposure SLRs, such as the Canon AE-1, many people bought those that previously would have used simpler cameras.

-- glen

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You cant (effectively) push or pull C-41 negative film because it has to "develop to finality" for the remainder of the process to function normally.

I wouldn't be too concerned though as it has about a 7-stopover exposure range!

You may even find the extra strong super saturation attractive!

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  • 2 weeks later...

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