Assume you have a 4K or 10K camera without zoom (1x).
Case 1. Object width 2 cm and height 2 cm. It is 50 meter from the lens. The angle becomes << 1 so making the object invisible in the picture.
I am thinking how to choose the correct distance for a small object. I am making a plan where I position myself in filming one event.
You can assume the object is a piece of coal in coal mine i.e. object vs background properties are challenging. So quite low contrast and struggling with detection sensitivity vs reliability i.e. wanted 95% detectability and 5% false alarms.
Camera characteristics but can be improved if necessary
- Camera 4K-10K
- Focal length is 0.5 m
- The resolving power is 50.6 MP
- 150,000 pixel RGB+IR metering sensor
- Sensor Size: 36x24mm, Full-Frame CMOS.
- 10.1-micron pixel pitch
How do you choose the filming distance to the object?