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Finally - a Possible use for "High" ISO *** with the Foveon!

Started Oct 22, 2020 | Discussions thread
mike earussi Veteran Member • Posts: 9,440
Re: Finally - a Possible use for "High" ISO *** with the Foveon!
1

xpatUSA wrote:

mike earussi wrote:

xpatUSA wrote:

mike earussi wrote:

It might work with the SD14 or the SD1M but not with any camera with the AFE.

Please tell us why, Mike.

Because iso is only a software tag without the AEF so there's no amplification of the signal.

Thanks for the reminder that the difference between say the SD15 and the SD14 is the location of the ISO gain - before or after the ADC, respectively. Did you try any numbers?

No numbers, just experience. The SD14 shot at iso 50 produced absolutely no noise either in the sky or shadows. I've never seen another camera, either Foveon or Bayer that's been able to duplicate that. The SD15, utilizing the AEF, produced far more noise at all isos and less about 1/2 stop less DR.  Because of this diminished performance I never understood the rational of including it.

Remember that I do apply EC in addition to changing the ISO ...

So apparently EC does not help with an SD15, hmmm ...

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