RELATIONSHIP BETWEEN OBJECTIVE LENS SIZE AND LIGHT TRANSMITTANCE: WHY IS 50MM MORE SUITABLE FOR DUSK HUNTING THAN 32MM?

Among the parameters of a rifle sight, the size of the objective lens is one of the key factors affecting its performance. Especially in a hunting scene with complex lighting conditions like dusk, the relationship between the size of the objective lens and the light transmittance is particularly important. So, why is a 50mm objective lens more suit