Manuals / Phase One / Photography / Digital Camera

Phase One 645 AF manual AFL function lock mode, Mode one-push setting, Bulb exposure time setting

Models: 645 AF

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C-19 AFL function lock mode

This function is used to set the AF lock method when the AFL button is operated.

There is a choice between AF locking by pressing the AFL button and performing the AF operation for AF locking and AE locking.

0:Yes (AF lock only: initial setting)

1:Yes (AF operation/AE lock)

C-20 M mode one-push setting

This function is used to set whether one-push shift operation in manual mode is to be based on the shutter speed or f-number.

0:Shutter speed shift (initial setting)

1:F-number shift

C-21 Bulb exposure time setting

This function enables bulb shooting by setting the bulb shooting time from 1 to 60 minutes provided that the battery charge lasts. It can be used to decide on the bulb shooting time from 1 to 60 minutes.

C-22 Bulb shutter release setting

This function is used to set how to operate the shutter button for bulb shooting. At the “0” setting, the shutter is opened and closed while the shutter button is held down; at the “1” setting, it is opened and closed each time the shutter button is pressed.

0:While shutter button is pressed (initial setting)

1:Each time shutter button is pressed

C-23 Shutter speed in X mode

This function is used to set the shutter speed in X (synchronizing) mode. The initial setting is 1/125 sec. The kind of large flash unit for use in studios has a long firing time and so it may not synchronize at a high shutter speed setting. Take one or more test shots, and set the synchronization speed.

0:1/125 sec. (initial setting)

1:1/90 sec. (1/80 sec.*)

2:1/60 sec.

3:1/45 (1/40 sec.*)

* When the exposure value step width has been set to 1/2 step

C-24 Automatic sync speed setting

This function is used to set the shutter speed when using the flash unit made by Metz (with the SCA3952 adapter) in P (program) or Av mode.

0:1/60 to 1/125 sec. (initial setting)

1:Less than 1/125 sec. (metered value)

C-25 TTL flash compensation mode

This function is used to set whether to link exposure compensation and flash compensation when using the flash unit made by Metz (with the SCA3952 adapter).

0:Not linked (initial setting)

1:Linked

C-26 AF beam setting

The AF auxiliary light fires automatically when the subject is too dark to perform AF, but this function can be used to prevent the AF auxiliary light from firing.

0:Fires (initial setting)

1:Does not fire

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Phase One 645 AF AFL function lock mode, Mode one-push setting, Bulb exposure time setting, Bulb shutter release setting
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645 AF specifications

The Phase One 645 AF is a high-end medium format camera system designed for professional photographers seeking exceptional image quality and versatility. With its robust feature set and advanced technologies, it has become a preferred choice for commercial, portrait, and landscape photography.

At the heart of the 645 AF is its large 645-format sensor, which captures images at a remarkably high resolution. This sensor size not only ensures more detail in each shot but also provides superior dynamic range, allowing photographers to reproduce subtle lighting nuances in their work. The high pixel count is complemented by Phase One’s exceptional image processing capabilities, making it an ideal choice for large print production and high-fidelity image requirements.

One of the defining characteristics of the Phase One 645 AF is its modular design. Photographers can easily swap out different components, such as lenses and digital backs. This flexibility allows users to tailor their camera system to specific shooting requirements, whether that means switching to a high-resolution back for studio work or a faster one for dynamic scenes. The system is compatible with a wide range of Phase One lenses, which are known for their sharpness and optical quality.

The camera features a fast and accurate autofocus system, making it suitable for a variety of shooting conditions. With multiple focus points and advanced tracking capabilities, the 645 AF ensures that subjects are captured with precision, even in fast-paced environments. Additionally, the camera supports various shooting modes, including continuous shooting, which is crucial for capturing fleeting moments.

Another impressive technological advancement of the 645 AF is its robust build quality. Designed to withstand the rigors of professional use, the camera employs weather-sealed construction, ensuring reliable performance in challenging conditions. The ergonomic design provides comfortable handling during long shoots, making it a practical choice for professionals.

Moreover, the Phase One 645 AF integrates seamlessly with the company's Capture One software, allowing photographers to process their images efficiently. This software offers extensive editing capabilities, ensuring that images can be fine-tuned to meet artistic standards.

In summary, the Phase One 645 AF stands out in the world of medium format photography. Its impressive resolution, modular design, superior autofocus capabilities, and rugged construction make it a powerful tool for photographers who demand the very best. By combining state-of-the-art technology with a commitment to quality, the Phase One 645 AF continues to be a benchmark in professional photography.