Not an expert, but CMOS sensors (which are the ones used in cameras? I think?) do not use silver, do they? It’s practically all silicon. (CMOS = Complementary Metal Oxide Semiconductor, where the semiconductor is Si, the metal is Al or more recently Poly-Si and the Oxide is SiO2 obtained by oxidizing the Si)
Unless Si also prevents vampire images from being seen? Does vampire lore explicitly say that all materials were tested and only Silver has anti-vampire properties?
I could be wrong on any of the info I just told you, even a cursory Google search can fail me.