Very true but this is where a more sensitive sensor & slightly narrower aperture would help. The new 54Pros address this in a round about way for daytime by using variable iris. So you may still get Shallow focus at night, but in the day when it's bright & the aperture can be narrowed, the DOF should be much better. The compromise there, is the 54Pros are back on the 1/1.8 sensor. Proven, but without the light gathering ability of the 1/1.2. I think there's also some questions over lens quality with the 4kt. Then there's issues with processing power / memory, compression, & reboot scenarios. The 4Kt was the 1st of it's kind & it's probably due a refresh / replacement to address some of the shortcomings. I'm not rubbishing it here, they're all things that can be lived with / worked around to some extent. Just understand all cameras have achiles heals / issues.
I said it in another thread. The holy grail of low light was the camera Dahua produced in 2016 using possibly a Sony 7Sii sensor according to some reports. The issue was the price. If Dahua can get a deal with Sony over the sensor / processor & a cheap but decent lens, then I'm sure there's a market for it in the $400 range. The trouble was in 2016 it was £5k without the lens!
Failing that, I think Dahua really need to look at larger sensors maybe in the 1 inch range which are already common in action cams / phones & thus should be cheaper due to volume, or alternatively something in the 4/3 or APS-C range if costings allow. Unsure how the lower volume feeds in here to prices or if there's even a very sensitive sensor in the 4/3 APS-C size range. Again I'm sure manufacturers like Sony who might be afraid of the sensors being re-purposed could cut them down for CCTV use. After all, CCTV doesn't need 96 zone metering or 6 different methods. Only say 12 zone & centre wieghted / average. This immediately limits reuse if hardware nerfed. Just one example. Whatever they use, they must take a look at aperture vs sensor relationship & avoid the compromise they fell into with the 4kt and if NOT going down the non 7Sii route, they need to keep cost to around what the 4kt is now. Just my 2 cents on how the future should look.
