Exposure Metering Modes

There are three exposure metering mode to select a proper exposure modes appropri- ate to the lighting condition of subject.

How to select an exposure mode

1.Exposure mode mark is displayed when the

 

 

exposure mode button A is pressed. Since three

F

 

different exposure modes are displayed sequen-

C X

M

tially when either the front or rear dial is turned,

 

Av

 

Tv

 

P

 

select an appropriate exposure mode.

 

 

A

2. Press the SET button or exposure metering

B

mode button A to enter the setting.

Exposure Metering Modes

 

 

Exposure metering is performed after automatically

 

 

selecting average/spot exposure metering.

 

 

• Depending on the subject conditions, center-

 

 

weighted average/spot exposure metering is selected

 

 

automatically, and the correct exposure is measured.

 

Average/spot auto

• Spot exposure metering is automatically selected

 

when the brightness of the spot exposure metering

 

exposure metering

 

range becomes darker than the brightness of the

 

 

 

 

entire screen.

 

 

• If there is very little difference between the spot

 

 

exposure metering value and center-weighted aver-

 

 

age exposure metering value, the correct exposure

 

 

level is obtained as the intermediate value.

 

 

 

 

Center-weighted aver-

The average brightness of the entire screen is mea-

 

age/spot exposure

sured, emphasizing the center of the screen.

 

metering

 

 

 

 

 

 

The brightness of an area equivalent to 7.6% at

 

Center spot exposure

screen center is measured, and the exposure is de-

 

termined. The circle at screen center serves as a

 

metering

general guideline. This mode is suited to measuring

 

 

subjects with strong contrasts or measuring only

 

 

screen portions.

 

 

 

Exposure Metering Modes / Exposure warnings

Important

●When a polarizing filter is used, ensure that a circular polarizing filter (circular filter: C-PL) is used. The correct exposure cannot be obtained with a normal polarizing filter (PL).

Exposure warnings

With an inappropriate exposure setting, when shooting subjects that are too light or dark, the user is warned by the flashing external LCD or the LCD inside the viewfinder. At such times, the correct exposure cannot be obtained.

Warnings that the exposure is outside the metering range

○Program AE (P) ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥

The shutter speed and f-number blink.

○Aperture priority AE (Av) ‥‥‥‥‥‥‥‥‥‥‥‥

The shutter speed blinks.

○Shutter priority AE (Tv) ‥‥‥‥‥‥‥‥‥‥‥‥‥

The f-number blinks.

○Manual mode (M) ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥

The exposure metering value difference is displayed.

The time used for the metering timer can be changed.

Custom settings (C-04 on page 93)

61

 

62

 

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Mamiya 645 AFD III manual Exposure Metering Modes, How to select an exposure mode, Exposure warnings
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645 AFD III specifications

The Mamiya 645 AFD III is a substantial piece of photographic equipment that has long earned its place as a favorite among professional photographers and serious enthusiasts. Building upon the success of its predecessors, this medium format camera offers a blend of advanced technology and ergonomic design, making it a robust tool for capturing stunning images.

One of the primary features of the Mamiya 645 AFD III is its medium format film capability, which utilizes 120 or 220 film. This allows photographers to achieve superior image quality with greater detail and a richer tonal range compared to standard 35mm cameras. The camera's 6x4.5 cm frame size is ideal for producing high-resolution images that are perfect for large prints and commercial works.

The AFD III is equipped with an advanced autofocus system, featuring a 5-point autofocus sensor that works efficiently in a variety of lighting conditions. The AF lock feature enables precise focusing on subjects, ensuring that photographers do not miss crucial moments. The camera also supports manual focus for those who prefer greater control over their shots.

Another significant aspect of the Mamiya 645 AFD III is its compatibility with a wide range of interchangeable lenses. Mamiya's extensive line of lenses includes options for wide-angle, standard, and telephoto photography, catering to diverse creative needs. This versatility is enhanced by the camera's electronic aperture control, which allows for smooth adjustments while taking photos.

Built with a durable, all-weather body, the Mamiya 645 AFD III stands up to the rigors of professional use. Its design focuses on user comfort, with intuitive placement of buttons and controls that facilitate quick adjustments on the fly. The camera's clear viewfinder provides a bright, unobstructed view for accurate composition.

The inclusion of an electronic film advance further simplifies the shooting process. The camera can automatically advance the film to the next frame, minimizing the risk of double exposure. Additionally, the Mamiya 645 AFD III features a built-in metering system, allowing for accurate exposure readings in various lighting environments.

For those transitioning to digital photography, the AFD III can be paired with a digital back, making it a flexible choice for both film and digital mediums. This adaptability ensures that photographers can choose the best format for their creative vision.

In conclusion, the Mamiya 645 AFD III is a medium format camera that combines quality, versatility, and user-friendly technology. Its impressive features, robust build, and support for various photographic needs make it an exceptional choice for anyone serious about photography. Whether shooting landscapes, portraits, or commercial work, the Mamiya 645 AFD III provides the tools needed to capture stunning images with precision.
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