Dahua ePoE 6MP Varifocal Turret (IPC-HDW5631R-ZE)

looney2ns said:
It will if you haven't setup separate day and night profiles, and use profile schedule to change them.
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I have some playing around to do and learn all the ins and outs of these cams and NVR. So if I do that with profiles will the sensor trigger day/night or I have to put them on a schedule? Trying to understand the manual with hundreds of pages of Chinese translated to English is difficult at times ;-)
 
keithl said:
I have some playing around to do and learn all the ins and outs of these cams and NVR. So if I do that with profiles will the sensor trigger day/night or I have to put them on a schedule? Trying to understand the manual with hundreds of pages of Chinese translated to English is difficult at times ;-)
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Set a Schedule under Profile management, to change profiles from Night to Day.
 
Anybody got a preference for NIGHT TIME between the 8mp Dahua and the 6mp? I too am trying to get lots of area, but enough detail to ID in difficult lighting.
 
Burton_Flooring said:
Anybody got a preference for NIGHT TIME between the 8mp Dahua and the 6mp? I too am trying to get lots of area, but enough detail to ID in difficult lighting.
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Hi Burton,

I do not think we've yet seen a comparison and contrast between those 2.

There are comparisons between the 58xx and 52xx series of cameras here, so that is what I would start looking at first.

If you have very low light, you may have to consider multiple 52xx series of cameras.
 
I have the 4/6/8MP Eco-Savvy 3.0 cams as well as a few 2MP Starlights. As soon as I get done setting everything up I will get some pics and post some comparisons. The short is I like the 6 and 8 MP cams, the daylight quality is awesome and even night with IR is very good. The biggest issue is at distance the IR leave the edges a bit dark.
 
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I have a 8mp (4830EM-AS) ordered, and 2mp (5231R-ZE) on the way from Andy as well as a new 5mp "Starlight" (N51BI23).

Would you say that the night time performance is the same or similar between the 8mp vs. 6mp?
 
Check out comparison of 6mp w/ new 5mp H.265 Lite series and 2mp Starlight: Dahua New 5MP Starlight line up?

It seems like the 6mp retains the same or better detail, but is overall just darker at the same exposure settings as the 2mp Starlight.

Exposure set to Manual 1/30 and Default (50) Gain Levels. Bit-rate @ 10240kb/s @ 15 fps.

IR switched off on other camera so each camera is using it's own IR light to expose the image.

I had to force both of them to do Black and White as neither one of them switched.

20180516232300.jpg 20180516232450.jpg

Some Dusk Shots:

20180516211943.jpg

20180516212052.jpg
 
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the ir image is compromised because of the bush that is reflecting ir right next to the camera. also note that still images are practically useless...you need to compare motion.
 
is it just my imagination.. or does that 2mp 5231 look better in both images...... i know this one has the starlight sensor, but in the above images, i think i would prefer the lower megapixel with starlight
 
fenderman said:
the ir image is compromised because of the bush that is reflecting ir right next to the camera. also note that still images are practically useless...you need to compare motion.
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I realize motion is a game changer. I'm just posting what the static shot looks like because it's the baseline from which all other exposure settings go off of. And also, why I set the exposures to 1/30 (so you can see what it looks like with an actually decent shutter speed aka the true test).

The Starlight IR is bouncing off of a bush that is at least 50 feet away (it's zoomed way in).

It seems to me that the Fixed lens is not quite as good (and I think we all knew that) but wanted to post a static shot to compare w/ the original poster's static shots so you could get an idea of how MUCH worse, lol.

I would agree that the starlight annihilates the 6mp for overall brightness, and detail throughout the entire frame. But outside of that, it's not doing that bad considering it's cramming all of those pixels through a 1/2.9" Sensor. Remember, this is what the 4mp Dahua looks like:

NVR_CH08_live_1524112021059.jpg

20180516232300.jpg

I thought it was very interesting what goes on in the fenced area in the upper right corner. The 6mp (though darker) exposes this waaaaaaay better than the 4mp cam did.
 
fenderman said:
the 50f distance is irrelevant, the camera is adjusting for the overexposed bush...
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Yes, I quite understand that. For the actual implementation of this camera I will not be pointing it directly at that bush. I will post shots w/out IR so you can see what the image looks like without any IR at all.
 
Some conclusions I've made with comparing 2/5/6/8mp cameras is that the 8mp cameras have little to no advantage @ night over the 6mp.

Also, whenever you set the 6mp to any other resolution than 3072x2048 (the max res.) the image distorts as there are no other resolutions in the settings that are 3:2 Aspect Ratio. I don't mind 3:2, but really Dahua? lol

The 8mp is 16:9 with multiple other resolutions, so you can dial it down w/out distortion.

I may have gotten an 8mp that has a Fixed-4mm lens that is simply out of focus. Has anyone tried fixing the lens on these?

6mp (3072x2048 3:2 Aspect Ratio)
6mp without IR at 1-30th.jpg

8mp @ 3072x1728 (16:9 Aspect Ratio)
8mp without IR at 1-30th.jpg
 
I have seen posts from a few folks who manually refocused their fixed lens cameras. Not a frequent event, but not unheard of.
 
have 2/4/6/8 Eco-Savay cameras with the 2MP being Starlights and my observation is similar. the 8MP advantage is strictly in non-IR daylight where it is truly amazing. That said if your night scenario is requiring IR even with a Starlight then I would go 8MP all day every day. to me I have 2 4MP and not impressed, the 6MP is visibly better than the 4MP during the day (as expected) but the 8MP out shines them both. If I were doing it again I would do Starlights in places that benefit from the low light capabilities and then 8MP everywhere else. I did fixed focal for all but one camera since I need wide coverage except for one where the 5x zoom helped.

All but 2 of my cameras have WDR and 2 are enabled (a 4MP and a 2MP) and neither impress me with WDR as the picture looses detail and appears noisy. I am actually going to probably move the 4MP to get a different angle so I can turn WDR off since it is that much of a disappointment.

The disadvantage of 8MP is clearly the bandwidth and disk space it needs. I have 9 cameras up, 3 to go.
4 x 8MP 15fps
2 x 6MP 20 fps
2 x 4MP 20 fps
1 x 2MP 20fps

All using H.265

3 remaining:
2 x 2MP 20fps
1 x 8MP 15fps

All CBR and customized bit rate to what the camera recommends (most are around 8kb), I do 7x24 recording on a NVR5216 with a 6TB drive and running around ~12 days or video retention. My goal when all done is to have 7 days so I seem to be on track. I also plan on the cameras where I don't plan on using IVS for (likely only 2-3) I will eventually likely move them to H.265+
 
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Just wanted to post this quick comparison up.

2-5-6-8mp compared at 1-60th.PNG

I'm really torn. Which is the best wide-angle Camera for detail @ night: 5MP IPC-HDW2531R-ZS (Varifocal 2.7-13.5mm) ~$140 from @EMPIRETECANDY

or 6MP IPC-HDW4631EM-ASE (Fixed 3.6mm) ~ $140 from @EMPIRETECANDY

2-5-6-8mp compared at 1-60th Far detail.PNG
 
So on those samples at 1/60 is the lens f-stop the same? Without looking up those cameras I don't know and if they are not the same that will impact the image, the lower the f-stop the more exposure the image will have.
 
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