Nikon Z7 v. Sony A7Riii high iso noise comparison

Started 2 months ago | Questions
Yan M Junior Member • Posts: 30
Nikon Z7 v. Sony A7Riii high iso noise comparison

2 questions:

1. Has anyone done or seen any high/very high ISO noise comparisons between these two cameras?

2. If not, as I can have access to both at the same time, what sort of subject would you choose in low light that would make the comparison easier/easiest? (assuming that is a sensible question)

I am also posting this on the relevant Sony forum.

Thank you

Yan

ANSWER:
Nikon Z7 Sony a7R III
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Wahrsager
Wahrsager Senior Member • Posts: 1,769
Re: Nikon Z7 v. Sony A7Riii high iso noise comparison
1

Yan M wrote:

2 questions:

1. Has anyone done or seen any high/very high ISO noise comparisons between these two cameras?

2. If not, as I can have access to both at the same time, what sort of subject would you choose in low light that would make the comparison easier/easiest? (assuming that is a sensible question)

I am also posting this on the relevant Sony forum.

Thank you

Yan

I'd see how they do at a nighttime sport in a lit stadium.. A scene metered for players preferably wearing lighter tones against a dark background - I think this scene would reveal a lot. (It does for me in practise).

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j_photo Veteran Member • Posts: 4,246
Re: Nikon Z7 v. Sony A7Riii high iso noise comparison
1

Yan M wrote:

2. If not, as I can have access to both at the same time, what sort of subject would you choose in low light that would make the comparison easier/easiest? (assuming that is a sensible question)

When I wanted to compare the Z6 and Z7 for myself not long ago, I shot books on a bookshelf, with suitably low light levels. (I was interested in performance at iso 6400.) These shots provided deep shadow areas, where noise would be at its worst, as well as writing on the book spines to show how well detail was preserved. There are a few examples in my gallery if you are interested. (Note that these are not straight out of camera, but instead, sized equally and then processed with noise reduction and sharpening.)

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beatboxa Senior Member • Posts: 6,464
Re: Nikon Z7 v. Sony A7Riii high iso noise comparison
2

Yan M wrote:

2 questions:

1. Has anyone done or seen any high/very high ISO noise comparisons between these two cameras?

2. If not, as I can have access to both at the same time, what sort of subject would you choose in low light that would make the comparison easier/easiest? (assuming that is a sensible question)

I am also posting this on the relevant Sony forum.

Thank you

Yan

The Studio Scene comparison tool on this site is your friend.

They're basically the same.

Realistically, all cameras today of the same sized sensor have pretty much the same high-ISO performance.  The differences--if there are any--are so small (fractions of a stop) that you would only notice when pixel peeping (if you can even notice them at all).

And this is due to the nature of the noise at high-ISOs.  At high-ISOs, a majority of noise comes from a lack of exposure--photons never making it to the sensor in the first place.  A camera cannot record light that it never receives.  A tiny proportion of the noise is electronic from the sensor.

An analogy:  it's like you're comparing 92% efficiency to 95% efficiency.  For perspective, 1 stop (ISO 3200 vs 6400) is like comparing 50% to 100%.

There's probably more variance from your noise reduction tools & settings than there is from the cameras themselves.

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