Ignore the crazy mount or that the beauty plate is removed, but I am having hard time understanding why 2 different LEDs. Does anyone know? Are they different wave length? Also, if they were to be fully disabled and instead an IR blaster was used, would there be any degradation in video quality?
Why 2 different IR LEDS on the IPC-T54IR-ZE-S3?
- Thread starter vadimr
- Start date
One is for short distances and the other is for longer distances.
Many here use external IR instead of the camera IR, especially those in areas with lots of bugs.
Many here use external IR instead of the camera IR, especially those in areas with lots of bugs.
Thanks, that is what I figured. I am now curious what makes one a short range vs a long a range?
Thank you once again, do you know if they serve any other purpose? Can they be covered up. I'm building an inconspicuous mount and would prefer to eliminate them from the design since an external blaster will be used instead.
looney2ns
IPCT Contributor
Yes, that I am aware about, I've been using Dahua for 10 years. I wonder if they serve any other purpose. They are not used for night detection or something like that?
bigredfish
Known around here
No, they are conventional infrared LED emitters of a specific wavelength that is almost invisible to humans, are of different power output (wattage) and/or lens design depending on beam requirements as needed for varying distances, and which provide illumination to the camera's IR-sensitive sensor at times when ambient visible illumination is inadequate.
Whew......I almost ran out of commas!
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Different lens / reflectors..
One give wide beam, second narrow one
It’s very good system which allows to configure very uniform IR lighting for full video frame depending of distance from camera to objects / ground and optical zoom level.
other models should have this
Turret 5442 don’t have this and it’s very bad for IR performances (middle is over exposed, outside areas under exposed)
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bigredfish
Known around here
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</just kidding!>
