SmallRig RA-F150 Fresnel Lens Cooling Fan is a Thermal Generator!
How is the fan on the Smallrig fresnel lens powered!? In this video I explain the Seebeck effect and how smallrig is using a thermal generator to power a fan that helps cool your LED light running this lens modifier on it.
Link to buy this lens: https://amzn.to/4d8aAPo
They are using literal space age technology to cool this light and they dont mention it anywhere on the website or in the manual and Im flabbergasted I say!
Also go buy one, they're great and useful.