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  #1  
Old 12-14-2019, 07:19 AM
rjabend rjabend is offline
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Mein Auto: 2020 BMW X5 40i
2020 X5 Night Vision

I ordered my 2020 X5-40i with the rather expensive Night Vision and wanted to solicit experience with that option to determine if it is worthwhile. Thanks for any guidance.
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  #2  
Old 12-14-2019, 07:36 AM
gregmorin gregmorin is offline
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It is if you live in deer country. We've had it in two BMWs well worth it. You don't even need it on to work (ie the screen doesn't need to be active). The car uses the infrared eye to warn you of people and animals in and near the road.


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  #3  
Old 12-14-2019, 07:40 AM
rjabend rjabend is offline
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Quote:
Originally Posted by gregmorin View Post
It is if you live in deer country. We've had it in two BMWs well worth it. You don't even need it on to work (ie the screen doesn't need to be active). The car uses the infrared eye to warn you of people and animals in and near the road.


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Thanks. I live a little ways out in the "sticks" in FL so it sounds worthwhile. I hope it shows alligators as well as deer
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  #4  
Old 12-14-2019, 10:11 PM
Dolce Vita Dolce Vita is offline
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Quote:
Originally Posted by rjabend View Post
Thanks. I live a little ways out in the "sticks" in FL so it sounds worthwhile. I hope it shows alligators as well as deer
Can't put my finger on it, but I believe there might be a problem with thermal imagers and reptiles.
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  #5  
Old 12-15-2019, 12:50 AM
jadnashuanh jadnashuanh is offline
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Reptiles are cold-blooded animals, so, might not show up reliably...the system is looking for hot spots, not colder or ambient ones.
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Old 12-15-2019, 10:04 AM
Dolce Vita Dolce Vita is offline
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Originally Posted by jadnashuanh View Post
Reptiles are cold-blooded animals, so, might not show up reliably...the system is looking for hot spots, not colder or ambient ones.
D'ya think?
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  #7  
Old 12-16-2019, 11:25 AM
n1das n1das is offline
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I have the NV system in my 2014 535dx and love it. Things at ambient temperature appear as middle gray color. Anything warmer than ambient by even a very small amount appears to glow. Anything in the display colder than ambient appears darker.

Aluminum highway signs are the best indicators of what ambient temperature looks like. A sign appears blank because it's all at the same temperature. I've seen fresh roadkill still glowing because it hasn't lost all of its body heat yet. Bridges and other concrete structures appear to glow as they are still warmer than ambient from the warmth they soaked up during the day. Same with large rocks sticking out of the ground. Trees and plants glow slightly because they are alive and give off some heat. I've seen dead trees blend in with the ambient gray color instead of glowing brighter. Basically if it's alive it will produce some glow.

I've played around when parked by a store window. I look at the screen after holding my hand on the store window for about 10 seconds and I can see a thermal handprint left behind from where my had was.

Utility pole transformers glow because they are warm. Thermal leaks from houses in winter are easy to see.

Cops hiding in the darkness on the highway are easy to see due to the heat from their vehicle. I am aware of them before my headlights light them up. The cops can hide in darkness but they can't hide the heat from their vehicle.

Dry cold nights produce the best imagery. Different layers of cloud cover in the sky are easy to see which would not be visible to the naked eye. I have also seen "thermal twilight" in the sky well after sunset.

The NV feature is well worth it for better awareness during nocturnal driving.


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Last edited by n1das; 12-16-2019 at 11:32 AM.
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  #8  
Old 12-16-2019, 12:31 PM
rjabend rjabend is offline
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Location: Florida USA
 
Join Date: Dec 2019
Posts: 48
Mein Auto: 2020 BMW X5 40i
Quote:
Originally Posted by n1das View Post
I have the NV system in my 2014 535dx and love it. Things at ambient temperature appear as middle gray color. Anything warmer than ambient by even a very small amount appears to glow. Anything in the display colder than ambient appears darker.

Aluminum highway signs are the best indicators of what ambient temperature looks like. A sign appears blank because it's all at the same temperature. I've seen fresh roadkill still glowing because it hasn't lost all of its body heat yet. Bridges and other concrete structures appear to glow as they are still warmer than ambient from the warmth they soaked up during the day. Same with large rocks sticking out of the ground. Trees and plants glow slightly because they are alive and give off some heat. I've seen dead trees blend in with the ambient gray color instead of glowing brighter. Basically if it's alive it will produce some glow.

I've played around when parked by a store window. I look at the screen after holding my hand on the store window for about 10 seconds and I can see a thermal handprint left behind from where my had was.

Utility pole transformers glow because they are warm. Thermal leaks from houses in winter are easy to see.

Cops hiding in the darkness on the highway are easy to see due to the heat from their vehicle. I am aware of them before my headlights light them up. The cops can hide in darkness but they can't hide the heat from their vehicle.

Dry cold nights produce the best imagery. Different layers of cloud cover in the sky are easy to see which would not be visible to the naked eye. I have also seen "thermal twilight" in the sky well after sunset.

The NV feature is well worth it for better awareness during nocturnal driving.


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Thanks very much for the great rundown. Very helpful!!
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