Forum Discussion
Stereo Camera
Hello, i want to build a stereo camera. I choosed this camera -> https://de.ids-imaging.com/store/ui-3241le.html But now i need to know which lens i should take. It should have a S-Mount M12...
"joan" wrote:
This only works if the lens is rectilinear though, which is most probably not the case at these values.
You would need to know the radial distortion parameters of the lens or the mapping function.
You are correct, shorter focal length normally means greater distortions and as we approach fish eye lenses linear formulas have greater errors.
"joan" wrote:
Note that in the general case the sensor "size" value indicated in specs (like 1/1.8" here) is more of a "category" than a physical value. (1" sensors are not 1" in any dimension).
The imaging area is also smaller than the whole sensor, due to dark rows, etc. The product sheet for the linked camera indicates 6.784 mm x 5.427 mm (still unclear if this is the whole pixel array or the usable array).
I missed the specified sensor size in the data sheet. But the specified pixel size (5.3 μm) multiplied with the resolution gives the same values, so it looks as this is the usable array that is specified.
Anyhow... Since this is quite expensive cameras I hope that OP's camera dealer can help him/her with selecting a lens with the desired FOV.