Z8 "Hot Card" Warning During Video w/ New Delkin Black

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RecalcitrantRon

RecalcitrantRon

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I recently purchased a Delkin Black 512GB SN: C260286 for use in my Nikon Z8. It works fine for stills, but when I shot 3 short (30-60 second) videos at 3840 x2160; 30p, H265 the Z8 gave me a “Hot Card” warning. I shut off the camera, took the card out and it was very hot to the touch. It was only 75 degrees outside. I specifically purchased a Black series card because it was supposed to provide excellent performance. But if it cannot handle 3 short videos, then it is pretty much useless for video purposes. Am I doing something wrong here? The previous reports I read were with cheaper, slower cards and video over 10 minutes, not 60 seconds at 30p ( I was shooting stills in between at HE*). Are there better card choices?
 
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RecalcitrantRon said:
It was only 75 degrees outside. I specifically purchased a Black series card because it was supposed to provide excellent performance. But if it cannot handle 3 short videos, then it is pretty much useless for video purposes.
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You are unlikely to be doing anything wrong – this particular card seems to be defective and should be exchanged.
 
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I have gotten a hot card warning twice with the Z8 using a Delkin Black 325gb card. I never shoot video: I was shooting 20fps bursts (12 bit Lossless compressed RAW only) of about 3-4 seconds, with short breaks in between for about half an hour. The camera never shut off. When I took the card out it was very warm but not really all that hot. I could easily hold it in my hand with no discomfort.

It seems to me that since there are almost no reports of hot card warnings in the Z9 regardless of the card used, that the issue is with the Z8 and not the cards. Whether it is the size difference between the Z8 and Z9 such that the Z8 does not allow the heat to dissipate as quickly or some other aspects of the Z8 that would be my bet. Ken
 
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I use Delkin Black 512GB cards all the time for video (usually 120 fps, H265). The only time I got the hot card warning was a day when it was quite hot and the camera was sitting in the sun (now always cover the camera). So a defective card sounds like the only explanation. Delkin should replace it.
 
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I have a Delkin Black and a cheaper CFExpressB card. Lately I've been doing a lot of "long form" videos and I get the "hot card" warning no matter which card I use. My impression is there's no such thing as a "cool" running card -- they all run hot. Anyway, the hot card warning is just that -- a warning the card is hot. The camera will not shut down because of a hot card, but it will shut down if the camera itself gets too hot.
 
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Closing the loop on this. I emailed Delkin. I received a prompt emailed response telling me that the hot card warning was a known behavior with the Z8, generally nothing to worry about and to let them know if I noticed any performance issues beyond the notification. I responded that was not much help in determining if there was a problem with the camera or the card or neither; that I did not expect such short recording times to trigger a warning, asked if Delkin had any suggestions for determining if this was a card issue and that I was not getting the high performance I expected from a Delkin Black card. Delkin promptly replied that it had no suggestions to determine if it was the camera or the card and offered to replace the card for me which it did. Overall, I am pleased that Delkin promptly responded to my issue and stood behind it product with a prompt replacement. I'll see how the new one does tomorrow.
 
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