My question has to do with interlocks. Now, with the rb pro, pro-s and finally Sd, thr exist different levels of interlocks. My camera body is an rb pro-s - so was wondering what locks would be missing. Reading around here, I know that, for example, the 'dark slide' lock is missing.
I'm wondering about multiple exposure, and other locks and fail safes that are built-in.

Aside- the RZ and flash question, are the RB and RZ familiar that ways?

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