Canon IV

April 1951 - April 1952

Production: 1400 units
Serial numbers: 51270 - 67825

With the three-mode optical viewfinder and other features, this camera really publicized Canon’s innovative camera technologies.

It had cordless flashbulb synchronization since the flash unit rail had built-in flash synchronization contacts. Up to then, a troublesome synch cord was required to connect the flash unit to the camera. Attaching the flash unit to the camera side’s rail achieved electronic connection at the same time. The FP-, F-, and M-sync contacts switched automatically. The dedicated Flash Unit X was marketed simultaneously with the camera.