Memory cards stopped recording | Nikon Z9 + Capture One Mobile: iPad received all images.
I recently did a tethered photoshoot for the first time with my Nikon Z9 connected by USB-C to Capture One Mobile on my iPad Pro.
Setup:
- Nikon Z9
- Capture One Mobile on iPad
- USB connection priority on the Z9: Shooting
- Tether connection shown in Capture One: PTP
- Card 1: NEF
- Card 2: JPEG
- Image quality: RAW + JPEG
During the shoot, Capture One Mobile received the images normally. I ended up with several hundred RAW + JPG files on the iPad.
Afterwards, I checked both camera cards on my computer. Both cards show the same gap:
- RAW card:
D79_3892.NEFat 13:02, then next fileD79_3893.NEFat 13:37 - JPEG card:
D79_3892.JPGat 13:02, then next fileD79_3893.JPGat 13:37
So for about 35 minutes, images continued arriving in Capture One Mobile on the iPad, but neither camera card recorded the captures. After 13:37, writing to both cards resumed normally.
Capture One Mobile renamed the tethered files, but I matched them to the Z9 card files by timestamp and file size, so this is a real gap in local card recording and not just a filename issue.
Has anyone experienced this with a Nikon Z9, or another camera, tethered to Capture One Mobile over PTP?
I’m especially wondering:
- Can local card recording temporarily stop during a tethered session while Capture One Mobile keeps receiving files?
- Could this happen after a reconnect, cable issue, or other change?
- Is there a Nikon or Capture One Mobile setting that could cause this?
- Is there a reliable way to verify during a shoot that every tethered image is being saved to the camera cards?
Any experience or troubleshooting ideas would be appreciated.
This was a location shoot with three hired models, so discovering afterwards that both camera cards had a 35-minute recording gap was quite stressful. Thankfully, the missing images were still available on the iPad, but I would really like to understand what happened so I can prevent it on future shoots, ... and don't die young of a heart attack. ;)