Utilizing the Custom Functions on the 645DF when using Live View

When using Live View  with a Leaf Aptus-II on a Mamiya 645DF, the shutter speed needs to be set to “Time” before entering Live View in Leaf Capture/Capture One, and then it needs to be set back to the working shutter speed after you come out of Live View

This tip is meant to save the time that it takes to dial back and forth between the working shutter speed and “T” mode.

We will use “C1” and “C2” on the main dial and set them to remember “T” mode (C1) and our working shutter speed (C2).

Setting C1 to “T” mode

1. Set the main dial to “M” and use the thumbwheels to select “Time” and your desired aperture e.g. f8.0.

2. Press and hold the “Set” button for one second until you here a short beep and see the display flashing once.

Mamiya Leaf tips and tricks

3. Press and hold the Set button and turn the main dial to “C1”.

mamiya Leaf Custom Functions

Setting C2 to the working shutter speed

1. Set the main dial to “M” and use the thumbwheels to select your desired shutter speed and aperture (e.g 1/250th and f8.0).


2. Press and hold the Set button for 1 second until you here a short beep and see the display flashing once.

Mamiya Leaf custom functions

3. Press and hold the Set button and turn the main dial to “C2”.

Mamiya Leaf custom functions

Now when you use Live View all you need is to:

  • Select C1
  • Enter Live View
  • Press the shutter

To exit:

  • Turn Live View Off
  • Press the shutter
  • Select C2

You can now take a shot with your C2 settings.

To learn more about programming the C1, C2 and C3 functions, refer to page 53 in the Mamiya 645DF User Guide.