AE Lock Mode

Shooting with the AE lock function is useful in cases where the desired focal point differs from where the focal point is usually measured, or when it is necessary to measure the exposure using spot metering in order to bring the desired subject into focus.

The AEL button will lock the Auto-exposure value as the photo is being recomposed.

Metered-value difference indicator

Keep pressing the AEL button A, and the differ- ence between the metered exposure value and

CF X

M

 

Tv

P

Av

 

A

 

1.Turn the shutter release mode selector lever to “S” or “C.”

2.Turn the exposure mode setting dial and select “P,” “Av,” or “T”.

3.Focus on the subject for metering exposure, and press the AEL button A on the rear of the

grip. will appear on the viewfinder LCD, indicating that the exposure value is locked.

4.Move the camera to recompose the shot, then take the picture.

★ on the viewfinder LCD blinks to indi- cate the exposure is locked, when you con- tinue to take the next picture in the AE lock mode.

★If you turn the shutter release mode selector lever to the “L” (power OFF) position, or after a lapse of one hour, the AE lock mode will automatically be cancelled.

★In the Manual “M” exposure mode, you cannot use the AE lock function.

★When the exposure metering value differ- ence display appears, press AEL button A for about 1 second. The one-push shift function is now activated to shift to the shutter speed based on the metered result. (page 59)

the exposure of the new composition will be dis- played on the viewfinder LCD. This function can be used to see if an object of very different bright- ness levels can be properly photographed.

★If the difference between the set value and the metered value exceeds 6EV, the viewfinder LCD blinks “– u –” for underexposure and “– o – ” for overexposure.

By turning the front or rear dial in the AE lock mode, you can change the aperture and shutter speed value without changing the exposure value that is set when entered into AE lock mode.

In the “P” mode (Program AE) mode, turning either the front or rear dial shifts the program to “PH” and “PL .” When in “Av” (Aperture-priority AE) or “Tv” (Shutter- priority AE), turning one of the dials changes both the aperture and shutter speed values.

★Exposure compensation and auto-bracketing function can be used when the camera is in the AE lock mode in normal operation or with the mirror locked up.

1. The way to cancel the AE lock can be changed. Custom settings (C-17 on page 94)

2. Half-pressing of he shutter release button can activate the AE lock

mode. Custom settings (C-16 on page 94)

3.The assignment of the AEL button and AFL button can be swapped. Custom settings (C-15 on page 94)

65

 

66

 

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Mamiya 645 AFD III manual AE Lock Mode, Metered-value difference indicator
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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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