Pocketwizard Plus Receiver lens mount_Mamiya 645 It'll fire the shutter when

It'll fire the shutter when you mash the button

and the diaphragm- despite a bit of oil- moves well

The Asahi Angle Finder slips on to the viewfinder of a Pentax Spotmatic (or similar) and provides a clear view of the viewfinder from any 90-degree angle (the mount rotates

8 STM is a compact standard lens for the Canon EOS R mirrorless system

Memory Stick

Pocketwizard Plus Receiver lens mount_Mamiya 645 It'll fire the shutter whenThe Pocketwizard Plus Receiver accepts radio signals from a compatible transmitter (sold separately) and permits long distance flash or camera triggering. Includes PC sync cable. Note that this item is a receiver only; you will also need a transmitter to trigger a remote camera or flash as described above.