Great forum, I've been reading along here quite a bit. Now I had to register to be able to contribute something or ask questions.
It's great that there is the possibility of the camera plate via Hejnar Photo, after Arca-Swiss plates from Clearsight can no longer be found.
But has anyone already tried this Hejnar Photo plate with a 501cm / 503 cx? I'm asking because I'm afraid the camera plate is thicker than the rubber feet, which means that the Hasselblad won't stand stable and it isn't as "low profile" as she could be. Am I right in my assumption?
The rubber feet should be about 5mm (0.2 inch) high, the Arca-Swiss plate from Hejnar Photo has a profile of just under 7mm (0.27 inch).
Alternatively, it would be an idea to mount a rubberised plate with integrated Arca-Swiss:
https://www.proaim.be/products/proaim-snaprig-medium-baseplate-stand-for-dslr-dslm-cameras-bp213 The width and depth seems perfect, but this adds more than 120g to the setup. However, I have ordered the Proaim Baseplate and will be happy to report back if needed.