Context and Workflow
In professional construction and infrastructure timelapse photography, we capture thousands of images over months or years. With older DSLR models like the Nikon D5600 or D7500, the folder structure on the SD card works flawlessly: as soon as a folder reaches the limit of 5,000 images (DSC_5000.JPG), a new folder is automatically created, and the numbering continues seamlessly.
Technical Issue: Folder Structure on the Z Series
However, a critical problem arises with the Nikon Z5 and Z6II once the first folder is full. While the camera does generate a new folder, instead of filling it, it creates a completely new folder for every subsequent photo. This results in hundreds of folders, each containing only one image. Since a memory card can only handle a limited number of folders, the system fails prematurely.
Firmware Analysis
We have tested this behavior extensively with various firmware versions, including version 1.50. Unfortunately, the error remains consistent; once the first folder is full, the issue recurs regardless of the file numbering or folder management settings.
Final Verdict from Nikon (NPS)
After extensive communication with Nikon Professional Services (NPS), we received an official response (Dossier Number: 06332705). The explanation for the folder structure issue is technical in nature:
Nikon confirms that camera settings and folder structure status are only saved correctly when the camera is turned off via the physical power switch. Because our autonomous systems power the camera on and off via the power supply, the camera does not get the chance to write its current status to the internal memory.
Nikon has stated that any method of powering the camera on or off outside of the physical switch is not officially supported. Consequently, no further steps or firmware adjustments will be undertaken by the manufacturer for this specific use case.
Impact on Professional Use
Nikon's conclusion is problematic for the professional market, especially as DSLR models become increasingly scarce. In principle, the Z series is highly suitable for timelapse applications due to its full-frame sensor (wider field of view) and the ability to shoot completely silently (silent shutter). The latter is essential for projects near offices or residential areas and also prevents mechanical wear during tens of thousands of exposures.
Conclusion: Not Suitable for Autonomous Deployment
Despite the superior specifications, the Nikon Z5 and Z6II are not suitable for unattended, long-term timelapse projects where power is managed externally. For projects exceeding the 5,000-photo limit, the use of trusted DSLR models (such as the D5600 or D7500) remains necessary until a software-based solution becomes available.
Are you experiencing the same issue? Please report it to Nikon Support, referencing your own case; the more reports they receive, the higher the chance of a future bug fix.