with phone cameras reaching aperture values of f/1.2, having dedicated image sensors and chips, why and how are most of them still inferior to DSLRs?

Question

with phone cameras reaching aperture values of f/1.2, having dedicated image sensors and chips, why and how are most of them still inferior to DSLRs?

In: Technology

Answer 1

So the f-stop is a ratio. An f/1.7 lens sounds impressive but it’s light gathering ability is comparable to an f/11 lens on a DSLR like a Canon 6D. That’s because while the 1.7 ratio sounds impressive; on a physically small sensor and lens the physical hole the light travels through is many times smaller than in a typical DSLR lens. The massive DSLR sensor captures far more total light.