I can recommend the mono 'zoom tube' industrial cameras with live USB output. Very cheap in China, often expensive when resold overseas. I think a 4k one should

I can recommend the mono 'zoom tube' industrial cameras with live USB output. Very cheap in China, often expensive when resold overseas. I think a 4k one should be $100 or less. Maybe $150 including stand, ring light, etc. USB UVC control.