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Phase One 645 AF manual Flash photography, This camera’s synchro contact is an X contact

Models: 645 AF

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NOTICE:

This camera’s synchro contact is an X contact.

Using flashes designed exclusively for other makers of cameras may damage the camera’s internal mechanisms if connected to the camera’s hot-shoe. In this situation, use an off-camera flash bracket and connect a sync. cord to the camera’s synchro terminal.

When using flashes with a flash duration of 1/500 sec. or longer, set the shutter speed to 1/30 sec. or less.

3.8Flash photography

Phase One 645 AF is equipped with a horizontal local-plane metal shutter; this makes it unnecessary for the user to acquire lenses equipped with central shutters, though it still is possible to use these lenses optically.

The focal-plane shutter provides higher shutter speeds, compared to central shutter lenses, which allow you to freeze a fast moving target by using very high shutter speeds.

When using a focal-plane shutter it is not possible to achieve flash synchronization faster than 1/125sec, as the 2 shutter blades at e.g.1/500 are moving parallel creating a small slit allowing a small fraction of the light to enter the sensor area of the digital back. This shutter method allows for shutter speeds of up to 1/4000 sec.

A central shutter will make it possible to achieve slightly higher shutter and flash sync speeds, but central shutters but will not be able to achieve high shutter speed.

1.To use a grip type flashgun or a strobe with other electric contacts than X contact, connect the sync. cord to the camera’s sync. terminal. (See note below about flashes designed exclusively for other camera makes.)

2.While pressing the unlock button, turn the exposure mode setting dial and set it to “X” (1/125 sec.) or “M” (manual). When “M” (manual) is selected, turn the front dial and set the shutter speed to 1/125 sec. or slower.

3.Turn the rear dial to set the aperture, and then take the picture.

In addition to its standard flash sync system, the Phase One 645 AF features TTL (through the lens), off the film (OTF), electronic flash exposure metering.

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Image 39
Phase One 645 AF manual Flash photography, This camera’s synchro contact is an X contact
Page 38 Page 40

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.