The verdict is in – Nikon’s got a new leader in high-ISO performance: the Z 6 III. When I wrote my initial hands-on review after getting the camera in June, I’d not had time to give it serious, real-world high-ISO testing. Having fewer pixels than the Nikon Z 9 and Z 8 (24MP vs 48MP) meant larger pixels on the same size sensor, so I expected a boost in those cameras’ already impressive high-ISO quality. But over the last couple of months, I’ve been surprised at how good that quality actually is.

There are three big issues that affect how good an image can look at high ISOs. First, how new the camera is. Newer cameras often mean newer processors, newer algorithms and sometimes newer-generation sensors, all of which can improve quality. Second is the size of the pixels. Larger will almost always give you better performance at high ISOs than smaller pixels. And finally, exposure. Noise will be worse if you underexpose at high ISOs and then try to fix that exposure afterwards, on the computer (and yes, that applies to RAW captures as well as JPEG).

I first started pushing the camera at the Hartford Nationals, a disabled sports competition run by Move United, in Birmingham in July (I was also running a Sports Photography Workshop there). I didn’t go crazy with ISO, partly because I didn’t need to, and partly because I wasn’t sure yet how it would perform. It did just fine, as you can see from the photos below. So far, so good.

The first chance I had to push the camera, at the Hartford Nationals, was the powerlifting competition. At 3600 ISO, even zoomed in to 100%, I see no noise at all. Nikon Z 6 III, Manual exposure, Auto white balance, ISO 3600, 1/320 at f/4 in Matrix metering, -0.7 EV, Nikkor Z 70-200mm f/2.8 VR S lens at 185mm.

A couple of days later, I pushed it further when photographing swimming. Nikon Z 6 III, Manual exposure, Natural Auto white balance, ISO 5000, 1/1000 at f/4 in Matrix metering, +0.3 EV, Nikkor Z 70-200mm f/2.8 with 1.4X teleconverter, shot at 170mm.

Next, I decided to see what I could do with it using the Nikkor Z 180-600mm f/5.6-6.3 lens at night baseball. Normally I’d never consider doing that because to get the shutter speeds I want (usually 1/1600), at f/5.6-6.3, would require me to push the ISO so high I’d get poor quality results. To test that, I went to a Royals game that I wasn’t working. That way if I failed no client would suffer. This time, the camera blew me away. I actually had to keep pushing the shutter speed higher to force the camera into using insanely high ISOs. And the photos still looked great!

Here’s my original capture of a pitcher trying to make the throw to first base after a bunt. Notice that I’ve dialed in a little overexposure, as you can see from the camera settings below. Nikon Z 6 III, Manual exposure, Natural Auto white balance, ISO 20,000, 1/2500 at f/6 in center-weighted metering, +0.3 EV, Nikkor Z 180-600mm f/5.6-6.3 VR lens at 400mm.

And here’s that same photo cropped to 100% so you can see whether the noise is an issue or not. I don’t have a problem with it.

The Royals’ Bobby Witt Jr. dives to trap a grounder. Pushing the shutter speed into a range I didn’t really need also pushed the ISO into a range I’ve never considered using. I will now. Again note the overexposure. Nikon Z 6 III, Manual exposure, Natural Auto white balance, ISO 36,000, 1/3200 at f/6 in center-weighted metering, +0.7 EV, Nikkor Z 180-600mm f/5.6-6.3 VR lens at 460mm.

After that, I had no qualms taking the camera on the Southwest photo trip I just led, as we’d be doing a lot of night photography. To make it a little more challenging, I chose to shoot with my Nikkor Z 14-30mm f/4 lens, instead of the 14-24mm f/2.8. And at 10,000 ISO (photo at the top of the arch and Milky Way was also 10,000 ISO), below, the camera didn’t break a sweat.

Photographing the Mitten in Monument Valley, I had no worries setting the camera to 10,000 ISO. Nikon Z 6 III, Manual exposure, 3800K white balance, ISO 10,000, 30-seconds at f/4, Nikkor Z 14-30mm f/4 S lens at 21mm.

Does all of this mean the Z 6 III will now be my main camera? No. I’ve always believed in using the best tool for the job, and I have other Nikon cameras to choose from that are better at other things. But when it comes to night photography, or situations where I might need to shoot at really, really high ISOs (what I’d have called “insane” before), there’s no question – I’ll grab that Z 6 III.

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