3.5Using focus lock and infrared focusing

Using the Focus Lock Function

If the object that you want to focus on is not in the focus frame, the camera focuses on the background at the center. In such cases use the focus lock function to lock the focus before releasing the shutter.

1. Set the focus mode selector lever to “S” or “C.”

Put the subject in the focus frame and halfpress the shutter release button.

2. Lock the focus.

When the focus mark in the viewfinder LCD is lit, press the AF lock button on the front of the camera to lock the focus.

3. Adjust the composition.

With the shutter release button half-pressed, slide the camera to achieve the desired composition, and release the shutter.

When the focus mode is set at “S” (single focus mode) and the focus mark is lit, hold the shutter release button halfway down to lock the focus.

NOTE

Assignment of the AEL and AFL buttons can be swapped.

Custom settings C-15.

-You can set the camera so that when the AFL button is pressed, AF is activated and AF lock is performed Custom settings C-19.

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Phase One 645 AF manual Using focus lock and infrared focusing, Using the Focus Lock Function, Lock the focus
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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.
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