| Products > Thermal Imaging |
| Need help calibrating Audi autoliv night vision camera |
| (1/3) > >> |
| Bg_rocks:
Hey guys I need some help my 2013 Audi a6 night vision camera got water damaged (failed gasket) after extensive cleaning and soldering is back to working order only thing left to do is I need to manually set the focus distance anyone knows how far the focus is at its best? |
| Bg_rocks:
This is what picture looks like right now nothing is actually sharp my confusion comes from Audi uses a heating element to “calibrate” however that element is an X placed 1.2m in front of the camera and it has nothing to do with the mechanical focus on the lens. According to Audi specs camera sees and recognize people between 10 and 90 meters my idea is setting it up at the middle 45m or am I wrong? |
| Fraser:
Are you familiar with setting the Hyperfocal point of a fixed focus camera ? This is what you need to set on your camera so that targets remain in focus at infinity and provides the best minimum acceptable focus distance as well. I would expect the camera to be capable of an acceptable focus from 0.5m to infinity. A Hyperfocal focus setting for 1.0 metre sounds about right. Hence the Audi test chart being positioned at 1.2m for testing and focus setting. I suggest you focus the camera to provide decent focus of a target at 0.5m and then check the image focus for a target at a decent distance, say around 20m. Infinity focus is a little harder to check due to the low resolution of the camera making small targets indistinct. Try looking at a building a long way away for the infinity focus check. Fraser |
| Bg_rocks:
That does make sense but with normal photography background the lens been f1.1 means a very shallow focus range if it was f11 that would make longer in focus range. Audi placing heat element in front of the car at 1.2m I think is only to determine distance and software to scale pedestrian Audi will not mess with the focus ring since that’s inside behind the heater of the protective glass the picture I am attaching is before the water damage and u can clearly see the buildings are more in focus then right now |
| Bg_rocks:
--- Quote from: Fraser on January 01, 2025, 02:39:30 pm ---Are you familiar with setting the Hyperfocal point of a fixed focus camera ? This is what you need to set on your camera so that targets remain in focus at infinity and provides the best minimum acceptable focus distance as well. I would expect the camera to be capable of an acceptable focus from 0.5m to infinity. A Hyperfocal focus setting for 1.0 metre sounds about right. Hence the Audi test chart being positioned at 1.2m for testing and focus setting. I suggest you focus the camera to provide decent focus of a target at 0.5m and then check the image focus for a target at a decent distance, say around 20m. Infinity focus is a little harder to check due to the low resolution of the camera making small targets indistinct. Try looking at a building a long way away for the infinity focus check. Fraser --- End quote --- Also the camera has really narrow field of view so at 1.2m all u can see is about the license plate of the car in front of u I am not sure there is a point to that to be on focus |
| Navigation |
| Message Index |
| Next page |