Alpha 1 rear curtain sync not working

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3ricj New Member • Posts: 4
Alpha 1 rear curtain sync not working

I'm coming from a having used rear curtain sync on my a7r3 and a7r4 without issue on the external strobe port.

Try as I might, I can't seem to make it operate on my new alpha 1: it's always shooting the strobe at the start of the frame.

I have tried e shutter and mechanical shutter and Everything else I can think of. I tried a basic hotshoe to pcsync adapter and had the same results.

Has anyone been able to make this work? I'm using studio strobes so I need to use the PC sync. For reference, I'm using 2.5second exposures

The same strobes work flawlessly in rear curtain sync on all my other cameras (not that it should matter, it's a dumb signal).

Any ideas?

I am beginning to think this is a firmware bug

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