Why You Can't Use Base ISO in Log: Explained

Log profiles and base ISO don't play nice together, and most cameras won't let you force it. The reason matters: log pulls the exposure curve hard enough that shooting at true base ISO leaves you with a signal too thin to hold in post. Your camera isn't being difficult. It's protecting the footage. If you're picking up video work and wondering why your native ISO suddenly jumped, this is the explainer to bookmark before the job, not during the grade.