Gamma Correction-Yor best friend when autoISO is on without you realising it

Auto ISO was switched on without me knowing it, when shooting on the FS5 for these night scenes.

I discovered a gamma correction tool in Premiere which does a great job in dealing with some of the noise and restoring the image so that it's useable. This has enabled me to fix for the moment without having to reshoot a number of scenes which was affected by this.