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Help disconnecting extension tubes



I bought a stack if Hasselblad extension tubes.
They are black with chrome buttons.

How do I separate each tube??

I press the button and twist... but I don't want to force it.

Is there something I am missing?
Yes, cocking the extension tube, like you'd do with a lense. After that, they're easy to separate.

- Jeroen
If they jam when trying to seperate them, wind the cocking key on the bottom tube to cock them all. Then place them on a camera body, and start to seperate them one at a time, starting with the tube furthest away from the camera body.

Dave Odess

Factory trained Hasselblad technician
The screw blade was turned a bit, I moved it into position, and they all came apart