Taken as a test shot for my new GFX100S, using Pentax 645 55mm DFA lens and Fotodiox adaptor.
Rocks at Turimetta Beach in Sydney's north.
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I am happy to report that the camera operated well with an external power source. I like the ability to manually set long exposure times in manual mode; not only does this avoid the need to time things in Bulb mode, it also makes those shutter speeds available for the continuous shooting; in this case, I used 1 minute files.
The camera won't allow 16-bit mode in continuous shooting mode, so the lit scene was shot on ISO640 for 15 minutes (16-bit). The sky was shot using ISO2000 using a stack of 1-minute files (14-bit).
I'll have to see what I can do to reduce the gaps in the trails. Perhaps a setting or two can be tweaked...