Which is more suitable for fishing, underwater camera, infrared or searchlight? My grandfather always goes fishing.

When fishing, the underwater camera with infrared illumination is better than the underwater camera with searchlight (strong light).

Advantages of underwater camera with infrared illumination: light weight, electricity saving, and high picture definition because infrared light has no obvious refraction in water. Disadvantages: the price is slightly higher.

The underwater camera illuminated by searchlight has the advantages of low price and high heat. If the water temperature is low, it can play an indirect role in attracting fish. Disadvantages: heavy weight, high power consumption, easy refraction in strong light water, unclear picture, high heat, and easy formation of water mist at the lens.