Help Please - Leica Q with SF24D Flash mounted - unwanted exposure preview

[BFMount]

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Hi I am new to Leica Q. Mounting a used SF24d, the flash works fine in manual mode as expected. I know it does not provide TTL never use it anyway.

The problem is exposure preview cycling. Link to video showing the behaviour - https://photos.app.goo.gl/zSdGYgHrTUL69tLE8. 

Is the flash defective? It works fine. I read the Q's manual and the Flash manual. My thought was a setting somewhere but I cannot find it. A couple ways to 'solve' it:

- If I turn off the camera setting exposure preview 'pasm' and change it to 'pas' the problem is solved, but is that the correct answer?

- If I change to P, A, S, the problem goes away. Only in Manual do I get the 'warning' / exposure preview cycle. If the flash is mounted, why does the Q still complain and try to tell me I am under exposed?

Thank you!

[AndrewDD]

Setting it to PAS is the correct answer. That's how I set my Q2  (and previously Q) when using flash. 

I had the same problem on a TL2 I briefly owned - it doesn't have the option to switch to PAS. That was the main reason I quickly got rid of it.