A bit OT, but, If I have a sensor A that is 4 times the area of sensor B, will camera A have 4 times the light gathering power of camera B or twice the power?
I want to compare the Oly tg-5 sensor size ~ 28mm sq with Rx0 sensor ~ 117 mm sq at f/2 and f/4 respectively. the oly is12mp, the sony 15mp. ignore differences due to other factors
edit: both are ~ 24mm (35mm equiv) focal lengths at their widest