snapsy wrote:
Here is an NRAW comparison between ISO 5000 and 6400
You can see that flickering and color shift at ISO 5000. I'm going to continue to test because this is a deal breaker. Im still curious how Robert May got such bad flickering in his video at 2:17.... he doesn't recount what ISO it was but believes since it was NLOG, it was at the base 800 ISO which makes sense Idk why he'd push it any higher in that lighting environment. Im putting a test shoot together using NLOG from ISO 800 up to 51200, a very DR test.
ArizonaImage wrote:
You can see that flickering and color shift at ISO 5000. I'm going to continue to test because this is a deal breaker. Im still curious how Robert May got such bad flickering in his video at 2:17.... he doesn't recount what ISO it was but believes since it was NLOG, it was at the base 800 ISO which makes sense Idk why he'd push it any higher in that lighting environment. Im putting a test shoot together using NLOG from ISO 800 up to 51200, a very DR test.
It's a black level issue. It's not significant for raw images since you don't normally need to match the deep pushed shadows between one raw image to the next. But it's obviously an issue for video. I saw his second video that you just linked but mine doesn't manifest as starkly as his - might be a difference in settings, but be copy-variation. I'm working on a new video that will show this blacklevel issue manifestation in video more clearly.
This is my test, pushed 2 stops. YouTube does affect the quality but watching in 4K is best. While it cleans up at 6400, the flickering still somewhat exists at the absolute left of the frame.
Here's a quick comparison of my Z8 vs Z6 III for NRAW N-Log 4k25p ISO 800, blackframe video, in Resolve's color page showing all scopes. Notice how the Z6 III exhibits constant blackframe shifts whereas the Z8 does not.
I am sure they do, but sometimes glitches like this make it to production cameras. It's best to report this to Nikon (if you have the camera) and hopefully they can address it with a FW upgrade, and if not, a recall.
Still, I suspect 99% of Z6 III users (even many who do video professionally) don't shoot log video and might never notice something is off.
mogul wrote:
Doesn't Nikon realize that this can kill camera sales?
snapsy wrote:
Here's a quick comparison of my Z8 vs Z6 III for NRAW N-Log 4k25p ISO 800, blackframe video, in Resolve's color page showing all scopes. Notice how the Z6 III exhibits constant blackframe shifts whereas the Z8 does not.
Here is a plot of the black level variation for a 10-second Z6 III 6K 60 fps NRAW N-Log ISO 800 blackframe video, exported as Rec.709 TIFFs. The mean of all TIFFs was calculated, then the % delta vs mean of each frame is plotted. An animation of the two largest outlier TIFFs is visualized.
In some of your videos it looked like the "flicker" was not exactly random, with odd and even frames alternating. Was that my brain deceiving me?
Thank god I have never shot a second of video with a Nikon camera, going back all the way to the D90. But I do appreciate the presence of a video recording button in a prime location so I can remap it to something useful - like focus shift shooting 😀
RoamingScott wrote:
It’s almost like this is a benchmonkey issue as usual. People who actually go outside and shoot in normal conditions seem to love it.
Grass: touch it. Then film it.
Lots of people love their gear. Here's a video shot with the iPhone 15.
I also posted this in the Z8 low light focus problem thread.
FWIW this fellow compares the AF of the A9iii and A1 from Sony with the new Z6iii's AF in low light and the Z6iii seems to be better than both of these in this particular test. He is far from a technical expert but is far from being a complete idiot either. Just one more data point to consider.
RoamingScott wrote:
Nikon can focus on eyelashes in pitch dark now?!
He covers this elsewhere in the video. He does note some eyelash focus but it's not predominant and entirely satisfactory. Unlike all other brands which will never under any circumstances focus on an eyelash. Apparently.
I will throw my hat in the ring and say there definitely is an issue with the shadows on the camera in video and it is very annoying. Basically have to overexpose the image and treat the camera like it has no shadow recovery to shoot with it. Really annoying and may be a dealbreaker for me. Which sucks because I wanted to come over from my Panasonics, but this issue is to big.
Geoff CB wrote:
I will throw my hat in the ring and say there definitely is an issue with the shadows on the camera in video and it is very annoying. Basically have to overexpose the image and treat the camera like it has no shadow recovery to shoot with it. Really annoying and may be a dealbreaker for me. Which sucks because I wanted to come over from my Panasonics, but this issue is to big.
Its going to be fixed via firmware pretty quickly is my guess-
