Lens Flare on HFW5241E-Z12E

Discussion in 'Dahua' started by DLONG2, Aug 18, 2019.

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  1. DLONG2

    DLONG2 Getting comfortable

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    After installing the new 5241-Z12 the images get lens flares, both when morning sunlight is reflected off a car, and at night when tail lights cross the scene. Is there a way to lessen this lens flare, which I never saw before on the 5231-Z5 camera?

    Also, getting plates at night seems to be problematic, while it was fairly easy with the Z5. I might have to park my idling car down the dark street for a couple of hours, to get the plate capture to work, as intermittent night traffic is all hit and miss. It almost seems that the IR on the Z12 is less than I have on the Z5. (Using IR manual, NearLight = 0, FarLight = 100 for a target distance of ~160')
     
  2. bigredfish

    bigredfish Known around here

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    I'm at 120ft with the older 5231-Z12's and have added IR and have the onboard IR to manual 100% on both.

    I use the following settings at night, and turn Contrast way up. No backlight on this one.

    front-tag-night-08182019.jpg HOA Entrance_EntrTag_main_20190817211405_@8.jpg HOA Entrance_EntrTag_main_20190817201040_@8.jpg HOA Entrance_EntrTag_main_20190817200527_@8.jpg
     
  3. DLONG2

    DLONG2 Getting comfortable

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    Thanks, bigredfish. Would you mind sharing the other categories you have?

    Picture/Brightness = 50
    Picture/Contrast = 90
    Picture/Saturation = 50
    Picture/Sharpness = 85
    Picture/Gamma = 50
    Picture/EIS = Off
    Backlight = Off
    WB = Auto
    Day/Night = B&W
    IR Light = Manual 0/100

    I remember you posting the model of the IR lamp you had acquired, and I'll find that in the forum. Having extra IR would be good.
     
  4. bigredfish

    bigredfish Known around here

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    Picture/Brightness = 50
    Picture/Contrast = 80
    Picture/Saturation = 50
    Picture/Sharpness = 55
    Picture/Gamma = 50
    Picture/EIS = Off
    Backlight = Off
    WB = Auto
    Day/Night = B&W
    IR Light = Manual 100

    But I may try more Contrast and sharpness like you ;)

    I used the Tendelux 200ft version, but honestly, Id look for something with a more focused beam angle, like to try this one
    Scene Electronics(HK)Co., Ltd - Products - S-SA6P-IR PoE IR Illuminator - Scene,Infrared illuminator,Infrared-ray night vision video camera,CCDLEDLamp board.Infrared Lamp board,High clear with lifrared ray an d night_sight came,Infrared Night Vision Assembly Cover,White light lamp
     
  5. DLONG2

    DLONG2 Getting comfortable

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    Here's an example of lens flare, and the poor quality of the plate capture at night.
     

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  6. bigredfish

    bigredfish Known around here

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    Not able to play that video for some reason.
     
  7. DLONG2

    DLONG2 Getting comfortable

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    Does this MP4 file play okay?
     

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  8. Parley

    Parley Known around here

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    Both videos work for me.
     
  9. alastairstevenson

    alastairstevenson Staff Member

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  10. bigredfish

    bigredfish Known around here

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    That one does, I cant get the first one to play..

    I do get a flare similar at certain times, caused by a street sign nearby. Shoudnt hurt you from getting the plate tough. Looks like you need more IR?
     
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  11. DLONG2

    DLONG2 Getting comfortable

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    Thanks for the recommendations, bigredfish. The S-SA6P-15_IR or even the 30_IR looks good, but how would a PoE source work with only the one network cable connected to the camera? Does the power source come from one of the cable leads coming out of the camera?
     
  12. bigredfish

    bigredfish Known around here

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    No, They do make splitters and PoE IR units but I’m not up to speed on how to use them. I’ve always ran a separate wire to power the IR unit.

    Maybe one of the pros here can help ....
     
  13. DLONG2

    DLONG2 Getting comfortable

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    Looking at looney2ns' review of the 5241, one of the leads is marked 'power'. It's unclear from the IR product page whether their power cable would use this lead.

    SA6P.png
     
  14. bigredfish

    bigredfish Known around here

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    That power lead on the camera is for power IN to the camera, not out.
     
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  15. Parley

    Parley Known around here

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    The latest camera I just put up yesterday was doing this at night. In fact it may have been on the substream 1. I went back into the camera today and fixed a couple of items that I overlooked. One was the infrared light adjustment. I have the shutter speed at 1/2000 for normal, day and night.
     
  16. looney2ns

    looney2ns IPCT Contributor

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    You can use a POE splitter, then you would power both the camera and the IR emitter from the 12vdc output of the spliltter. Be aware of the total wattage draw doesn't exceed the POE splitters specs.
     
  17. DLONG2

    DLONG2 Getting comfortable

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    Can the Dahua camera work with either 850nm or 940nm? The 940nm is invisible to the human eye, and I'd rather flash the street with stealth IR. Looking at the CMVision IR324-850940 Combo 45 degree 324pc IR illuminator, with a range of 200 feet on AMZN for $80. CMVision seems to get spotty reviews on weatherproofing and returns, though.
     
  18. DLONG2

    DLONG2 Getting comfortable

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    Then there's the CMVision IR-200-940 for $70.
     
  19. DLONG2

    DLONG2 Getting comfortable

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    Parley, how can one tell if the sub stream is being used rather than the main stream?
     
  20. Parley

    Parley Known around here

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    I unchecked the enable box on the Substream to make sure.