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I am setting up a three camera shoot, and need to match the images from all three cameras to inter-cut. I typically film with FX6, in CINE EI mode, and follow Alister Chapman's exposure advice using a grey card - exposed at IRE=41%: https://sonycine.com/articles/how-correctly-expose-s-log3---a7s-iii---fx3---fx6---fx9/ I understand the grey card should also be exposed at 41% for the A7S3 & A74 for Slog3, however I assume that when using CINE EI on the FX6, I am in essence "over exposing" by one stop (at CINE EI 400) or by two-stops (at CINE EI 200), and so presumably, I should be compensating for this on both the A7S3 & A74? And so if my understanding is correct (and if not, please correct me 🙂) what should the IRE value be when exposing the grey card on the A7S3/A74* to match the FX6 fiming in CINE EI at the FX6 base ISO 800? (*and locking the ISO to the base ISO=800 on A74, and base ISO=640 on A7S3). I read online that 1 stop corresponds to 10% IRE, so would I simply add 10% to 41% for every stop of desired "over-exposure" on the A7S3/A74, to match the impact of CINE EI on the FX6? i.e. grey card @ 51% on A7S3(iso640)/A74(iso800)? to match FX6’s grey card =41%, when filming CINE EI 400 (thus “over-exposing” the Slog3 on A7S3/A74 by 1 stop) grey card @ 61%on A7S3(iso640)/A74(iso800)? to match FX6’s grey card =41%, when filming CINE EI 200 (thus “over-exposing” the Slog3 on A7S3/A74 by 2 stops) I appreciate clarification on the above, and ANY other advice/tips regarding my intention to mix footage from these 3 cameras. Thank you!