Dahua 2MP Starlight Lineup

Discussion in 'Dahua' started by nayr, Nov 13, 2016.

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  1. davej

    davej Getting the hang of it

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    I just got an HFW4239TP-ASE Starlight and I am trying to compare it to my HFW4433M-I2. How the heck do I set these two up so it is a fair comparison of night sensitivity? Thanks.
     
  2. looney2ns

    looney2ns IPCT Contributor

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    Set the exposure and shutter speeds the same in both cameras.
    Since the HFW4433M-I2 appears to be a China Region hacked camera, the firmware in it may be buggy.
     
  3. Linda Mussetter

    Linda Mussetter n3wb

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    I am confused on the difference between "Starlight" and Starvis". In understand that Starlight is a term from Dahua for their low light product, but I though the truely great low light (night) color came from the Starvis sensor but some of the Starlight cameras state Starvis Sensor and some say CMOS with no mention of Starvis. I am looking for the low light (night) somewhat color 2 mp cameras so NOT sure which is more important Starvis, Starlight or models that state Starlight with Starvis sensor.
     
  4. aristobrat

    aristobrat IPCT Contributor

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    A lot of the models that used to mention STARVIS in the specs now say CMOS instead. Not sure why Dahua changed that.

    There are different sized STARVIS sensors that can be paired with different lens (2MP, 6MP, 8MP). I’ve only seen the combination of the 1/2.8” (or 1/1.8”) sensor combined with a 2MP lens get the Starlight tag.

    If you search the Dahua forum here for threads that have “Review” in the title, you should easily find a lot of info on the popular Starlight models.
     
  5. Linda Mussetter

    Linda Mussetter n3wb

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  6. nbstl68

    nbstl68 Getting comfortable

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    Starvis Is a Sony trademarked word that refers to the increased light sensitivity of its specific line of sensors.
    "Starlight" is not a Sony but Dahua label...What it refers to specifically, appears unclear, but the assumption has been at least that the camera includes use of a Sony Starvis sensor. "Starlight" may possibly refer to something else entirely,(setting functionality, other firmware applied within the camera?) by Dahua, especially in cameras no longer indicating a Starvis sensor but still saying "starlight", but I do not know for sure.
    For more info on Starvis sensors from Sony just Google it. For clarification on the "Starlight" branding you'd have to get someone at Dahua to tell you if that is even possible.

    Cameras with Sony Starvis image sensors
     
  7. aristobrat

    aristobrat IPCT Contributor

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    IMO, Starlight refers to the camera's low-light image quality, based on the minimum illumination specs of the camera.

    Take a look at the the three popular Dahua turrets below. All three use Sony STARVIS sensors, but they use different models of the STARVIS.

    5831 (4K/8MP) uses a 1/2.5" Sony STARVIS sensor and an 8MP lens.
    Minimum illumination specs:
    0.05Lux/F1.8 (Color,1/3s,30IRE)
    0.2Lux/F1.8 (Color,1/30s,30IRE)

    5631 (6MP) uses a 1/2.9" Sony STARVIS sensor and a 6PM lens.
    Minimum illumination specs:
    0.03Lux/F1.6 (Color,1/3s,30IRE)
    0.3Lux/F1.6 (Color,1/30s,30IRE)

    5231 (2MP) uses a 1/2.8" Sony STARVIS and a 2MP lens.
    Minimum illumination specs:
    0.006Lux/F1.6 ( Color,1/3s,30IRE)
    0.05Lux/F1.6 ( Color,1/30s,30IRE)

    You can see that despite each model using a Sony STARVIS sensor, the 5231 (with the specific combination of a 1/2.8" STARVIS sensor and a 2MP lens) has much better minimum illumination specs than the 5631 and 5831.

    Nobody's posted the specific minimum illumination specs that Dahua uses to qualify a camera as "Starlight", but so far they've usually all been in the range of the 5231s.. at least for the international models. There has been a few times where Dahua US has put a Starlight tag on a model where folks here are like "uh, really?" But since most folks here get the international models, hasn't really been an issue.
     
    Last edited: Feb 6, 2019
    giomania likes this.
  8. looney2ns

    looney2ns IPCT Contributor

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    Here's the thing, Dahua's "specs" are all over the place. Apparently no one proof reads spec sheets or the website listed specs.
    I've found several spec sheets that have numerous obvious errors in them.
    So, as for the Starvis label being dropped....it could be as simple as they changed copy writers.
     
  9. LVoss

    LVoss n3wb

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