Non linear HLC control on DS-2CD2387G2-L(U) (Colorvu 8MP) - possibly affects other models.

[triumph202]

Has anyone else noticed the non linear response of the HLC control in the 8MP Colorvu cameras? See the image below, top pic is with HLC set at 40, middle is 41 (note massive change in scene) and the the last pic is with it set at 100. It's almost as if the highest HLC setting is 41and after that it drops off again up to 100?



I've got 2 Colorvu 8MP cameras it happens on, one has been updated to the latest Euro firmware and the other is a couple of months old running what it came with. Both behave the same. I also noticed similar behaviour when quickly trying WDR. It's on the Low Illumination setting and very noticeable in low light situations.

 

[triumph202]

The 8MP DS-2CD2386G2-I(U) is also affected.

WDR also exhibits a similar step on both models, but around the 50 mark IIRC.

 

[triumph202]

WDR also exhibits a similar step on both models, but around the 50 mark IIRC.

There's little to no effect with WDR from 0 to 40, then a massive step at 41.... followed by next to no change up to 100.

 

[triumph202]

I've updated to the latest Euro firmware from here

https://www.hikvisioneurope.com/eu/portal/?dir=portal/Technical Materials/00 Network Camera/00 Product Firmware/G5 platform(2xx3G2 2xx6G2(C) 2xx7G2(C) 3xx6G2(C) 3xx7G2(C) 1x83G0)/2xxxG2(C)

Currently V5.7.10_220720_S3000442586

Does anyone know of later versions on their other sites?