PhaseOne 645DF - Page 118

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Mirror Up
When using mirror up with the Drive Dial in the M.UP position ensure that
the Exposure Mode Dial and the focus mode are both in Manual mode (M).
It is not possible for the camera to measure light or focus when the mirror is
up. Please consult the Mamiya 645 Instruction manual to learn how to use
Mirror Up.
T-mode on the Mamiya 645AFD
T-mode is not supported for digital backs on the Mamiya 645 AFD or AFD
645 II. This is usually not a problem as the Mamiya can use exposure times
as long as 16 minutes. The recommended maximum exposure time with the
IQ180 back is 2 minutes and the IQ160 and IQ140 is 1 minute.
The Phase One 645AF, 645DF and the Mamiya AFDIII can use the Bulb
function to work in the same way as the T Mode. Please consult the relevant
manual for more infomation or see page 91 of this user guide to learn more
about the Bulb function for the Phase One 645DF.
Viewnder Masking
The image area of the Phase One and Mamiya 645 cameras is approximately
56x42 mm. A viewnder mask is only needed for the IQ140 model. Viewnder
masking is not necessary for IQ180 and IQ60 models as their light sensitive
CCD measures 53.9x40.4 mm.
Shutter Release Button
Drive Dial
Mirror*
*Do not touch the mirror
Exposure Mode Dial