Worlds First Review - Dahua DH-IPC-HDW5849H-ASE-LED / IPC-Color4K-T - 2.8mm Turret

[CCTVCam]

Just wondering here, will the 4kT adapt automatically to changing light conditions?

In my application I have floodlights with reasonable amount of ambient light on 1 camera and near darkness on the other, So if I set eg a night time profile for the low light condition, when the floodlights kick on from movement, will the 4kt over ride the night profile and adapt to the increased light or swicth to day, or will the profiel keep the camera pegged at night until sunrise and force me to thereore run a single day profile 24/7 on these cameras and rely purely on the lights to make the picture usable which will otherwise bee to dark without the re-inforcement?

 

[David L]

I have a question, I presently have a 5442 2.8mm running Day profile 24/7. Apparently I have enough light since my IR has never kicked On. If I were to replace the CAM with the 4KT, can I assume that the CAM would perform the same way but even better? I will be keeping the LEDs Off.

 

[wittaj]

I have a question, I presently have a 5442 2.8mm running Day profile 24/7. Apparently I have enough light since my IR has never kicked On. If I were to replace the CAM with the 4KT, can I assume that the CAM would perform the same way but even better? I will be keeping the LEDs Off.

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I assume you are not on default/auto settings?

But yes this camera lets in so much more light. My 5442 is around 1/60 shutter and same field of view I can run double and triple shutter and still brighter than the 5442.

 

[David L]

I assume you are not on default/auto settings?

But yes this camera lets in so much more light. My 5442 is around 1/60 shutter and same field of view I can run double and triple shutter and still brighter than the 5442.

Thanks.
Correct, No Auto settings. Screen captures don't paint the best picture. Just thinking I may want to upgrade, but may wait for the Varifocal since I am not in a hurry to buy.

But correct me if I am wrong, other than using varifocal for testing/location unless you are viewing live and adjusting focal most varifocals stay fixed.

 

[wittaj]

That is correct, a varifocal is a set it and forget it. A PTZ is for constant zooming in and out.

 

[CCTVCam]

Anyone using a 4kT / X have an answer on the profile question?

It seems David and myself have the same question.

Do you need day and night profiles set for the 4kt or can you just use auto or a day profile 24/7?

 

[bigredfish]

I have both but use separate day/night profiles. Mostly because I tend to run an exposure range during the day and a fixed exposure at night.

 

[wittaj]

It depends on your light. With some light you can get by with same profile 24/7, but you don't want to run on auto/default settings.

 

[CCTVCam]

I have both but use separate day/night profiles. Mostly because I tend to run an exposure range during the day and a fixed exposure at night.

Do I take it you don't have flood lights / additional lighting coming on if triggered.

 

[CanCuba]

Anyone using a 4kT / X have an answer on the profile question?

It seems David and myself have the same question.

Do you need day and night profiles set for the 4kt or can you just use auto or a day profile 24/7?

I have a 4K/X and run different profiles for night and day. When I get my 18,000 lumen LED up next month, I'm hoping to be able to use the same settings. lol

 

[bigredfish]

Do I take it you don't have flood lights / additional lighting coming on if triggered.

Correct. Since we moved to the swamp, I'm in a situation where I can't run the same kind of lights I could at our old place. Too close and end up shining into someones bedroom.

 

[looktall]

fixed exposure at night.

does a fixed exposure at night give better results?

 

[wittaj]

does a fixed exposure at night give better results?

Whenever you take control away from the camera it is a good thing as they are designed to favor bright static images, so it will always favor the slower shutter of the range at night whenever it can.

So if you have a field of view with consistent light conditions, then yes a fixed exposure is the better option.

But if you have changing light conditions like flood lights or headlights, etc., then a range is better to adjust to the differing light conditions.

 

[tigerwillow1]

Correct. Since we moved to the swamp,......

You moved to Washington DC???

 

[flynreelow]

You moved to Washington DC???

i think he means orlando

 

[bigredfish]

No, We're 30 min north of Orlando up in Lake County now

View attachment Mom_ch3_20230213071327_20230213071351.mp4

 

[looktall]

what a shit hole.

 

[Judman]

So IDK if anyone else had this issue, but I couldn't get my cameras to respond to API commands and it was because I had turned off CGI in Network > Basic Settings.

I did firmware upgrades and factory resets and was reconfiguring everything and I guess absent mindedly turned CGI off. No idea what it stands for, but it I can change profiles again with the API call.

EDIT: of course after I post, I find the thread explaining that CGI is common gateway interface. Thats what I get when I research the fix after posting it.

 

[David L]

No, We're 30 min north of Orlando up in Lake County now

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View attachment 156913

Can't show the wife your paradise or we will become neighbors

 

[CCTVCam]

But if you have changing light conditions like flood lights or headlights, etc., then a range is better to adjust to the differing light conditions.

Any guidance on this from experience eg would your run a range of say 1/60 or 1/120 to 1/500?

Would I be correct in guessing you wouldn't want to go below 1/60 to preserve motion and probably wouldn't need to go above 1/500 unless running very bright lighting eg 10K lumen +.