Zinstax made an Instax adapter for the Mamiya RB67 and it looks like a lot of fun for Mamiya fans. The video above and below demonstrates how the accessory work. If you want to get one for yourself they can be ordered directly from zins.tax they are out of stock currently but the creator has a waiting list for the next batch.
The BINSTAX is an injection-molded ABS/PC blend with brass locking pins and an aluminum crank. There is also a dark slide holder on the back made of 6000 series Aluminium that was CNC machined and bead blasted.
