You can use a Phase One digital back with a V mount on your Hasselblad 500C. In order for the digital back to receive a capture signal you will need a sync cable that connects to the flash port on the lens to the multi-pin port on the digital back (PC to Multi-pin).
If you use a digital back on this camera be aware that you can over shoot with it which will cause images to have a magenta cast, or a double exposure. Phase One digital backs will take a normal exposure and a black calibration exposure (this is an exposure with the shutter closed and exposed for the same amount of time as the initial exposure). This black exposure is used to map out noise in the image. Because this camera is fully manual you can expose the sensor during the black calibration which will result in the problematic looking image.
The best practice is to make an exposure and wait for the digital back so flash the green ready light and beep. This indicates that you are now ready to capture your next image without risk of over shooting.
