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You are here: Home / The Last Word / Nikon D810 high-ISO noise reduction

Nikon D810 high-ISO noise reduction

August 21, 2014 JimK 2 Comments

Yesterday’s experiments with the D810 dark-field noise, which showed that Nikon employs some low-pass filtering when long exposure noise reduction is turned on, made me wonder if there was any similar filtering at high ISO settings, a la the Sony a7S.

I looked at one of the green channels of exposures made at ISO 64 and ISO 50K at 1/8000 seconds, with all in-camera noise reduction turned off.

ISO 50K
ISO 50K
ISO 64
ISO 64

No low-pass filtering is evident.

What is you turn high ISO noise reduction on? Here is a dark-field exposure with it set to “High”:

D810Hi ISO NR Hi

No low-pass filtering is evident. I checked “Low” and “Normal” with the same results.

High ISO NR does do something, though. Here’s the histogram with it set to “Off”:

HiISONROff

And set to “High”:

HiISONRHi

 

 

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Comments

  1. Joe says

    August 22, 2014 at 5:48 pm

    Is the D810 under test the one updated by Nikon?

    Reply
    • Jim says

      August 22, 2014 at 8:45 pm

      No, the original firmware: 1.00.

      Jim

      Reply

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