IPC-HFW5231E-Z12 LPR from 137 feet

[achalmersman]

See my example video in this thread

Severe Focus Issue with IPC-HFW5231E-Z12

Sent from my VS990 using Tapatalk

 

[bigredfish]

It is a shame. I have the same problem using one as an LPR camera. Of course it wouldnt matter if I was using it to watch grass grow. It still goes out of focus when switching from color to B&W so badly to make it useless unless you force it to stay in B&W full time.

Even then I see similar focus issues as you describe, but not quite as bad...

 

[achalmersman]

Yea thats the worst part. Mine is changing focus on its own in the middle of the day without even a screen change. To the camera its a steady scene of stone and grass and road and BAM it shifts focus and stays out of focus

Sent from my VS990 using Tapatalk

 

[giel]

Yea thats the worst part. Mine is changing focus on its own in the middle of the day without even a screen change. To the camera its a steady scene of stone and grass and road and BAM it shifts focus and stays out of focus

Sent from my VS990 using Tapatalk

Same here, except that it even starts out-of-focus. Manually focus, leave it for a while, come back and it's out of focus. But only when zoomed in quite a bit.

 

[crc2004]

Quite a bit of discussion about the refocus problem with the IPC-HFW5231E-Z12 and I think the solution I used was missed by a few in my OP. The switch utility described in the link below works great. A few minutes before sunset the utility switches to the night profile and performs a "manual" focus and it reverts back the day profile and refocuses a few minutes after sunrise.
Dahua day/night switch utility - DahuaSunriseSunset

 

[crc2004]

Same here, except that it even starts out-of-focus. Manually focus, leave it for a while, come back and it's out of focus. But only when zoomed in quite a bit.

Do you have PTZ enabled in BI for that camera? I was inadvertently causing zoom to occur while navigating around BI until I disabled it.

 

[crc2004]

Oh, I forgot...A power outage can cause a refocus to occur.

 

[jazzy1]

guys, i was thinking of going with the Z12 to get plates cause we're getting blasted by mail thieves...you think this location will be good/acceptable? will this be a good cam for the job??...I'd need to zoom in of course..


the focus issue does seem to be putting me off...should I go for Z12e?....any alternative you might recommend?

Thanks!

 

[crc2004]

guys, i was thinking of going with the Z12 to get plates cause we're getting blasted by mail thieves...you think this location will be good/acceptable? will this be a good cam for the job??...I'd need to zoom in of course..

the focus issue does seem to be putting me off...should I go for Z12e?....any alternative you might recommend?
Thanks!

That's a tough call, you'll probably have to force manual zoom by using adjustFocus to get past your pole. You should check it against the IPVM Camera Calculator V3. I assume you have different camera on the mailbox?

While watching someone run off with your mail can be entertaining a better solution (than LPR) is to get a locking mailbox.

 

[jazzy1]

That's a tough call, you'll probably have to force manual zoom by using adjustFocus to get past your pole. You should check it against the IPVM Camera Calculator V3. I assume you have different camera on the mailbox?

While watching someone run off with your mail can be entertaining a better solution (than LPR) is to get a locking mailbox.

Yes, I'm using a 49225 on the mailbox...it worked great for plates too, but had to choose between either of those two targets since it's the only cam i have capable to doing both those jobs currently

Oh believe me. Got a locking mailbox. They’re prying it open. Cops are demanding. They want excellent face shots AND a plate. I’ve got the excellent face shots need the plate!

 

[crc2004]

Some more images from this camera;

LPR Time Lapse

 

[lulu5kamz]

I wanted to share a success story from my Dahua IPC-HFW5231E-Z12 LPR camera. I was able to help a neighbor out and solve a hit and run incident. Again thanks to @crc2004 for this thread!

Security Camera Solves Hit & Run Mystery

 

[patrocle]

@crc2004 , In profiles you use : Normal , Full Time or Schedule?
Thanks,

 

[richardgohth]

This camera is crazy good for watching the license plate. Any guys in other country can watch the plate like this pic?

 

[richardgohth]

I'm using the free version of OpenALPR for now.
View attachment 24375

impressive
what is the percentage performance for anpr and car model?
thanks

 

[brundon]

Assuming you are still using free Open ALPR how are you retaining data after 2 days?

 

[patrocle]

Assuming you are still using free Open ALPR how are you retaining data after 2 days?

By exporting the data out, every 2 days. The only data you will not have is the pictures.

 

[EMPIRETECANDY]

Dahua IPC-HFW5231E-Z12E LPR Talk
This is the model IPC-HFW5231E-Z12E LPR setting, maybe can help guys here. Thanks to @patrocle

 

[zebrock]

I'm setting up an IPC-HFW5231E-Z12 this weekend for a friend for LPR purposes. My first time dabbling in this. He is using an NVR, not Blue Iris. Has anyone set one up this way or is everyone running BI?

 

[bigredfish]

I’m running one on a 4208 PoE nvr. Other than having to keep in b&w due to the focus shift problem, it’s doing ok.