Hello,
I noticed that DORI distance parameters for a new 2431 (1/3" 4 Mpix) is much better then 2231 (1/2.8" 2 Mpix), examples for bullet versions:
IPC-HFW2431S-S-S2
https://www.dahuasecurity.com/ceen/products/productDetail/36267
Lens
Detect
Observe
Recognize
Identify
2.8 mm
56 m...