Reduce Liability by Illuminating Details Across Expansive Areas with DarkFighter-Equipped 8 MP 42x Network IR Speed Dome, Well-Suited for Large Venues, Airports & Parks

February 10, 2021

Hikvision HikWire blog article DarkFighter-Equipped 8 MP 42x Network IR Speed Dome

The Hikvision 8 MP 42x Network IR Speed Dome DS-2DF8C842IXS-AELW(T2) enables you to view precise details across expansive areas using its 42x optical zoom paired with DarkFighter technology to illuminate poorly lit areas. This camera is well-suited for long-range applications that require crisp video across expansive properties such as forests, roads, airports, parks, and large venues.

It’s one of the first security industry PTZ cameras that features a 1/1.2-inch progressive scan CMOS sensor with 8 MP resolution to produce a complete and accurate image of a scene. In addition to 42x optical zoom it also has 16x digital zoom for enhanced flexibility and image capture. Additional camera features include:

  • Full color illumination down to 0.002 Lux @ (ƒ/1.6, AGC On); Black and white down to 0.0002 Lux @ (ƒ/1.6, AGC On)
  • 120 dB WDR (wide dynamic range) to optimize image quality when excessive backlighting exists
  • IR distance up to 1,640 feet (500 m)
  • H.265+/H.265 video compression technology to reduce bandwidth and storage savings
  • Rapid focus while zooming to deliver more accurate images when using a large zoom ratio
  • Built-in gyroscope improves EIS (electronic image stabilization) performance for better image quality, by stabilizing the camera when a scene has movement such as during rapid zooming and strong winds

Learn more about this high-performance, long-range camera on the Hikvision product page.

IMPORTANT! This model requires non-standard firmware. Do Not Install standard firmware (e.g. v.4.1.xx) on this model. Doing so will permanently damage your system. You must use custom firmware v.4.1.25 from the iDS-9632NXI-I8/16S product page.

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The I-series NVR (such as the DS-7716NI-I4) is one of Hikvision's most popular and feature-rich recorders. As such, many firmware revisions have been introduced over the years to continually ensure the product is compatible with the newest technology available. Due to the many revisions, we recommend that the user closely follows the instructions below in order to reduce the amount of time spent as well as the chance of failure.


Database Optimization and Repair

As more affordable IP cameras are introduced over time with greater video resolution and data sizes, more efficient database management also becomes necessary. The introduction of firmware v4.0 brought about a new database architecture in order to be futureproof.


After upgrading to v4.X, the recorder database will need to be converted and optimized. If you are experiencing issues where playback is expected but not found, make sure "Database Repair" is performed as indicated in the procedures and scenarios below.


Preparing the Upgrade

Before proceeding with upgrade, it is recommended that NVR configuration file is exported from the NVR over the network or on to a local USB drive.


Upgrading from v3.4.92 build 170518 or Older

  1. All recorders must reach v3.4.92 before proceeding further. Upgrading from versions before v3.4.92 directly to any version of v4.X will likely cause the recorder to fail.
  2. If the recorder is already at v3.4.92, a full factory default is highly recommended before upgrading to any version of v4.X. There is a high chance of unit failure (requiring RMA) if the unit is not defaulted before upgrade.
  3. After reaching v3.4.92 and performing a full factory default, an upgrade directly to v4.50.00 is acceptable.
  4. After the upgrade is completed and the recorder is reprogrammed, it may be beneficial to perform a Database Repair. For details, refer to the section "Database Optimization and Repair" above.
  5. To verify repair progress, you may refer to the HDD status, or search the recorder log for repair started and stopped entries. Note that while the HDD is repairing, new recordings are still being made, but some existing recordings may not be searchable until repair is complete.
  6. If you continue to observe playback issues after database repair, ensure there are no power, network, or motion detection issues. Should the problem persist, contact technical support.


Upgrading from Any v4.X Build to v4.50.00.

  1. Any v4.X build can be upgraded directly to v4.50.00.
  2. Export configuration is highly recommended before performing the upgrade.
  3. If upgrading from any v4.X version that was not v4.22.005, a Database Repair is recommended. Refer to Step 4 and onwards in the previous section.



Downgrading is not recommended. Due to new features and parameters constantly being added, downgrading may cause the NVR to factory default itself or require a manual default to operate properly.

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