Beyond the Digital Zone System—ISO 400 and 3200

While I was at it, I made exposures at ISO 400 and 3200 as well.

ISO 80

ISO 80, for comparison.

ISO 400

A little shadow noise beginning to appear in N+4.  Slight loss of highlight detail.

ISO 3200

Massive shadow noise.  More loss of highlight detail.

noise N noise N+4

The toe of the ISO 3200, N curve is slightly elevated due to noise.
The N+4 curve is greatly elevated by massive noise.  Both of these are zone -VI exposures.


Raising the Shadows slider reduces visible noise at the expense of compressing the tonal range.