Nikon Z6, Z7 and Canon EOS R low-light ISO scores?

Started Dec 4, 2018 | Discussions thread
Slaginfected Contributing Member • Posts: 702
Re: Nikon Z6, Z7 and Canon EOS R low-light ISO scores?

Maarten Droogne wrote:


Is it a good approach to also look at specific ISO values to compare the noise? For example, with my old Nikon D200 I wasnt able to go over 1600 in auto-mode, but all in all I was able to get decently exposed shots (with a f/6.3 or 5). Could have been better ofcourse, but I think an ISO up to 6400 will be able to handle all my ISO needs for my wildlife shots [...]

First things first: I haven't used any of these cameras personally, and in case of R, Z7 and A7rIII also don't see any reason to do so, because I'm one of these few persons who really do need high ISO capabilities.

With that said, from what I have seen so far, I'd say that as long as you stay within the 4-digit ISOs, even the R and the Z7 are ok-ish, at least in terms of sensor performance (AF, noise in viewfinder, and other usability stuff are topics on their own which you must include in your analysis, too).

I'd order the cameras like that: R < Z7 < A7rIII < Z6 ? A7III (latter two might be about equal). The difference between Z7 and A7III is more than 1 stop easily, and the difference is even bigger towards the R.

Maybe another note: Its funny how the topic of high ISO is always approached with "noise" (although the actual meaning is more along the lines of "grain" or "graininess"). The reason why I mention that is that actual noise is causing color distortions and limits your post-processing latitude. But, as said, 4-digit ISOs are ok-ish for all options; but especially if you start processing ISO6400+ (real world) images out of an R and an A7III/Z6 you should perceive the differences during post-processing.

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