Film, liquid composition, optical element, and imaging apparatus

A liquid composition, comprising:

• hollow particles made of a material having a refractive index of 1.15 to 2.70;
• a polysilsesquioxane;
• and
• a solvent, wherein
• in a hardened product obtained by applying the liquid composition to a substrate and hardening the liquid composition, at least one of requirements Ib/Ia≥0.7 and Ib/Ic≥0.3 are satisfied when an absorbance derived from a hydrocarbon group not directly bonded to a silicon atom, an absorbance derived from a bond between a silicon atom and a non-reactive functional group, and an absorbance derived from a bond between a silicon atom and a hydroxy group are respectively expressed as Ia, Ib, and Ic, the absorbances being determined by attenuated total reflection using a Fourier transform infrared spectrophotometer.