Average Exposure Metering Mode (A)
(Set the exposure metering mode selector lever to "A".)
The average light of the entire picture area is measured, with emphasis on the center.
Spot Exposure Metering Mode (S)
(Set the exposure metering mode selector lever to "S".)
The light in the circle at the center of the picture area is measured to determine the exposure. This mode is best suited for strongly backlit subjects, or when you desire to measure a specific area. When the spot you want to measure is not at the center of the picture, use the AE lock function. (See pages
Average/Spot Auto Switching Exposure Metering Mode (A-S AUTO)
(Set the exposure metering mode selector lever to "A-S".)
With the
The spot mode is selected automatically when the brightness within the spot metering area is lower than the brightness of the average metering area by about
1.5EV or greater. The average mode is selected when the spot exposure metering value is the same or brighter than the average value. When the difference between the spot value and average value is between 0.75 and 1.5 EV, the appropriate exposure is achieved at an intermediate value.
•lf a polarizing filter is necessary, use a circular polarizing filter. A linear polariz- ing filter is not compatible with the Mamiya 645 AF and its operations.
Exposure Compensation
In some situations, such as a great difference between the subject and background brightness or overall subject tones that will not meter correctly because they are all black or white, the resulting photograph may be under- or overexposed. When this occurs, use the exposure compensation function. Exposure compensation can also be used when you want to intentionally create overexposed or underexposed pictures.
Turn the exposure compensation dial while pressing the exposure compensation dial lock release button “A” located on the right side of the viewfinder. The exposure can be adjusted within a range of ±3 EV in 1/3 steps.
Be sure to set the exposure compensation dial back to the "0" position once you are finished taking photos with exposure compensation.
Display of the exposure compensation in
the viewfinder's LCD panel
45 | 46 |
