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Phase One XF

Medium format AF digital SLR camera

Specification

■ Production details
Announced:May 2015
System:● Mamiya M645 (1975)
■ Imaging plane
Maximum format:Medium format 6x4.5
Mount and Flange focal distance:Mamiya M645 [63mm]
Imaging plane:53.9 × 40.4mm sensor
Resolution:<No data>
■ Shutter
Type:Focal-plane
Model:Electronically controlled
Speeds:3600 - 1/4000 + B, T
Sensor-shift image stabilization:-
■ Exposure
Exposure metering:Through-the-lens (TTL), open-aperture
Exposure modes:Programmed Auto
Aperture-priority Auto
Shutter-priority Auto
Manual
■ Physical characteristics
Weight:790g
Dimensions:152x108x85mm

Manufacturer description

COPENHAGEN, June 2, 2015 -- Phase One todayintroduced the new standard in professional photography equipment. Designed in-house by Phase One, the XF Camera System represents a fundamental re-engineering of all key elements in a modern camera system. With robust, aerial-grade mechanics, advanced electronics, a new autofocus platform, new modularity options, new software and customizable touch controls, this system is based on more than 20 years of digital imaging design expertise, a commitment to open systems, and a relentless focus on image quality.

“Our key objective is to help the world’s best photographers capture more epic images, to stand out as artists and have fun in the process,” said Henrik O. Håkonsson, President, Phase One. “Our new XF Camera System is designed to be like a ‘Stradivarius’ in the hands of an expert.”

Phase One has designed the XF Camera System to deliver its fastest, most robust and most expandable camera system for professional photographers. Important advancements include:

  • New Autofocus Platform – The XF Camera System marks an important milestone for Phase One -- a new patent pending and fully controlled in-house autofocus system: the Honeybee Autofocus Platform (HAP-1).
  • New Flexible OneTouch User Interface (UI) – Based on clean Scandinavian design principles, the OneTouch UI is a seamless and highly customizable combination of dials, keys and touch screens, allowing photographers to personalize camera controls for their specific shooting requirements, via camera or software. Using a new modern Phase One Camera OS, the OneTouch UI is user upgradeable and will evolve in accordance with customer needs and feedback.
  • New IQ3 Digital Backs – A new full frame IQ3 80MP digital back is the first of its kind to offer exposures of up to 60 minutes using a new and Phase One-exclusive imaging sensor. It joins the new IQ3 60MP and IQ3 50MP digital backs -- all three of which feature a high-bandwidth interface that enables advanced tools in the new OneTouch UI, including power-sharing capabilities.
  • New Lenses Ready for 100MP and Beyond – Two new Phase One Schneider Kreuznach Leaf Shutter lenses -- 120mm and 35mm -- are both designed to resolve beyond 100MP. They add to Phase One’s range of 20 high-resolution medium format optics, including a dedicated Leaf Shutter range, a Focal Plane range, specialty and zooms, and support for 60 legacy lenses.
  • New Capture One Pro 8.3 – Delivering the market’s best RAW image quality, more than 25 advanced photographic tools, and industry leading professional workflow, Capture One Pro 8.3 is built specifically for the XF Camera System and supports more than 300 different models of 35mm DSLRs. It offers the option to customize XF camera controls and delivers up to 30 percent faster tethered shooting.
  • New Modular Viewfinders – The XF Camera System introduces a new 90° Prism viewfinder and a new waist-level finder. The full frame solid glass prism viewfinder is the brightest of its kind, and comes standard on all XF cameras. The new waist-level viewfinder (an industry classic) can measure exposure thanks to the HAP-1 autofocus platform ability to perform light metering.

Phase One Medium Format Advantages

Medium format sensors are 2.5 times larger than those found in high-end 35mm DSLRs. They produce unmatched resolution combined with large, high dynamic range pixels with exceptional wide angular response. Phase One always aims to customize its sensors, and has developed a world leading expertise in sensor design and optimization. And, while other cameras simply offer interchangeable lenses, Phase One’s commitment to an open platform philosophy extends beyond its choice of lenses to its camera body, viewfinders and digital backs, all of which are interchangeable for maximum creative options – (including the option to interface with other manufacturers, such as mounting a back on a technical camera) -- as well as long-term upgrade possibilities and investment value.

Phase One XF Medium Format Camera Delivers Fastest Response time

The Phase One XF camera is built on an all-new electronics architecture using faster processors, with new sensor advancements (including gyroscopic sensors and accelerometers) and an integrated wireless Profoto flash trigger.

The “Honeybee Autofocus Platform” (HAP-1) is designed with a new custom processor and high-resolution CMOS AF sensor that combines a unique floating-point architecture and fully programmable interface. It is built for precision in typical professional environments using a new white spectrum focus assist light and Phase One developed patterns. With the new Hyperfocal Point Focusing feature, it is possible to set a Hyperfocal point for each lens and have HAP-1 automatically return to that specific point when needed.

The New XF OneTouch User Interface is designed for power and simplicity.

  • Intuitive Touch - There are two touch screens: A 1.6” grip screen is designed for clear visibility under any lighting condition using a transflective capacitive touch display. On the back is a 3.2” retina touch screen designed to show high-quality image previews, with the ability to zoom to 100 percent with a single tap.
  • Soft-configured controls – The XF Camera controls can be controlled from the camera or via tethered computer/mobile device. Three customizable dial and six customizable controls let photographers personalize the operation of each control to support their needs at any given time.
  • Upgradeable Camera OS – The new XF Camera OS powering its OneTouch UI allows for easy and fast upgrades that will provide both new features and unique customization in accordance with the feedback of our customers. XF Camera Systems users are encouraged to submit ideas and feature requests and will be able to easily upgrade their system at regular intervals to benefit from new features.

The New IQ3 Digital Backs – These include the first Phase One exclusive 80-megapixel sensor capable of 60 minutes exposure. IQ3 Digital Backs use a new high-capacity interface capable of delivering faster data transmission and power sharing between the system’s two batteries. The IQ3 high-capacity interface is the enabler of many advanced integration features and will be the foundation for OneTouch UI updates for years to come.

Capture One 8.3 – Capture One distinguishes Phase One systems from the rest, to offer photographers the most consistent image quality, by industry leading RAW conversion and image processing tools. With this update, Capture One delivers 30 percent faster tethered shooting. And with direct Wi-Fi connectivity of the IQ3 range, capturing images on the XF can be triggered from Capture Pilot running on any iOS device.

Unparalleled Service & Support

Phase One offers best in class support, including guaranteed 8-hour response time for hardware customers, an unparalleled 5-year system warranty, 5-year uptime guarantee, and support directly from Phase One as well as through a worldwide network of carefully selected partners.

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Mamiya M645 system cameras
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35mm full frame

43.27 24 36
  • Dimensions: 36 × 24mm
  • Aspect ratio: 3:2
  • Diagonal: 43.27mm
  • Area: 864mm2

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Image stabilizer

A technology used for reducing or even eliminating the effects of camera shake. Gyro sensors inside the lens detect camera shake and pass the data to a microcomputer. Then an image stabilization group of elements controlled by the microcomputer moves inside the lens and compensates camera shake in order to keep the image static on the imaging sensor or film.

The technology allows to increase the shutter speed by several stops and shoot handheld in such lighting conditions and at such focal lengths where without image stabilizer you have to use tripod, decrease the shutter speed and/or increase the ISO setting which can lead to blurry and noisy images.

Original name

Lens name as indicated on the lens barrel (usually on the front ring). With lenses from film era, may vary slightly from batch to batch.

Format

Format refers to the shape and size of film or image sensor.

35mm is the common name of the 36x24mm film format or image sensor format. It has an aspect ratio of 3:2, and a diagonal measurement of approximately 43mm. The name originates with the total width of the 135 film which was the primary medium of the format prior to the invention of the full frame digital SLR. Historically the 35mm format was sometimes called small format to distinguish it from the medium and large formats.

APS-C is an image sensor format approximately equivalent in size to the film negatives of 25.1x16.7mm with an aspect ratio of 3:2.

Medium format is a film format or image sensor format larger than 36x24mm (35mm) but smaller than 4x5in (large format).

Angle of view

Angle of view describes the angular extent of a given scene that is imaged by a camera. It is used interchangeably with the more general term field of view.

As the focal length changes, the angle of view also changes. The shorter the focal length (eg 18mm), the wider the angle of view. Conversely, the longer the focal length (eg 55mm), the smaller the angle of view.

A camera's angle of view depends not only on the lens, but also on the sensor. Imaging sensors are sometimes smaller than 35mm film frame, and this causes the lens to have a narrower angle of view than with 35mm film, by a certain factor for each sensor (called the crop factor).

This website does not use the angles of view provided by lens manufacturers, but calculates them automatically by the following formula: 114.6 * arctan (21.622 / CF * FL),

where:

CF – crop-factor of a sensor,
FL – focal length of a lens.

Mount

A lens mount is an interface — mechanical and often also electrical — between a camera body and a lens.

A lens mount may be a screw-threaded type, a bayonet-type, or a breech-lock type. Modern camera lens mounts are of the bayonet type, because the bayonet mechanism precisely aligns mechanical and electrical features between lens and body, unlike screw-threaded mounts.

Lens mounts of competing manufacturers (Canon, Nikon, Pentax, Sony etc.) are always incompatible. In addition to the mechanical and electrical interface variations, the flange focal distance can also be different.

The flange focal distance (FFD) is the distance from the mechanical rear end surface of the lens mount to the focal plane.

Lens construction

Lens construction – a specific arrangement of elements and groups that make up the optical design, including type and size of elements, type of used materials etc.

Element - an individual piece of glass which makes up one component of a photographic lens. Photographic lenses are nearly always built up of multiple such elements.

Group – a cemented together pieces of glass which form a single unit or an individual piece of glass. The advantage is that there is no glass-air surfaces between cemented together pieces of glass, which reduces reflections.

Focal length

The focal length is the factor that determines the size of the image reproduced on the focal plane, picture angle which covers the area of the subject to be photographed, depth of field, etc.

Speed

The largest opening or stop at which a lens can be used is referred to as the speed of the lens. The larger the maximum aperture is, the faster the lens is considered to be. Lenses that offer a large maximum aperture are commonly referred to as fast lenses, and lenses with smaller maximum aperture are regarded as slow.

In low-light situations, having a wider maximum aperture means that you can shoot at a faster shutter speed or work at a lower ISO, or both.

Closest focusing distance

The minimum distance from the focal plane (film or sensor) to the subject where the lens is still able to focus.

Closest working distance

The distance from the front edge of the lens to the subject at the maximum magnification.

Magnification ratio

Determines how large the subject will appear in the final image. For example, a magnification ratio of 1:1 means that the image of the subject formed on the film or sensor will be the same size as the subject in real life. For this reason, a 1:1 ratio is often called "life-size".

Manual focus override in autofocus mode

Allows to perform final focusing manually after the camera has locked the focus automatically. Note that you don't have to switch camera and/or lens to manual focus mode.

Manual focus override in autofocus mode

Allows to perform final focusing manually after the camera has locked the focus automatically. Note that you don't have to switch camera and/or lens to manual focus mode.

Electronic manual focus override is performed in the following way: half-press the shutter button, wait until the camera has finished the autofocusing and then focus manually without releasing the shutter button using the focusing ring.

Manual diaphragm

The diaphragm must be stopped down manually by rotating the detent aperture ring.

Preset diaphragm

The lens has two rings, one is for pre-setting, while the other is for normal diaphragm adjustment. The first ring must be set at the desired aperture, the second ring then should be fully opened for focusing, and turned back for stop down to the pre-set value.

Semi-automatic diaphragm

The lens features spring mechanism in the diaphragm, triggered by the shutter release, which stops down the diaphragm to the pre-set value. The spring needs to be reset manually after each exposure to re-open diaphragm to its maximum value.

Automatic diaphragm

The camera automatically closes the diaphragm down during the shutter operation. On completion of the exposure, the diaphragm re-opens to its maximum value.

Fixed diaphragm

The aperture setting is fixed at F/ on this lens, and cannot be adjusted.

Number of blades

As a general rule, the more blades that are used to create the aperture opening in the lens, the rounder the out-of-focus highlights will be.

Some lenses are designed with curved diaphragm blades, so the roundness of the aperture comes not from the number of blades, but from their shape. However, the fewer blades the diaphragm has, the more difficult it is to form a circle, regardless of rounded edges.

At maximum aperture, the opening will be circular regardless of the number of blades.

Weight

Excluding case or pouch, caps and other detachable accessories (lens hood, close-up adapter, tripod adapter etc.).

Maximum diameter x Length

Excluding case or pouch, caps and other detachable accessories (lens hood, close-up adapter, tripod adapter etc.).

For lenses with collapsible design, the length is indicated for the working (retracted) state.

Weather sealing

A rubber material which is inserted in between each externally exposed part (manual focus and zoom rings, buttons, switch panels etc.) to ensure it is properly sealed against dust and moisture.

Lenses that accept front mounted filters typically do not have gaskets behind the filter mount. It is recommended to use a filter for complete weather resistance when desired.

Fluorine coating

Helps keep lenses clean by reducing the possibility of dust and dirt adhering to the lens and by facilitating cleaning should the need arise. Applied to the outer surface of the front and/or rear lens elements over multi-coatings.

Filters

Lens filters are accessories that can protect lenses from dirt and damage, enhance colors, minimize glare and reflections, and add creative effects to images.

Lens hood

A lens hood or lens shade is a device used on the end of a lens to block the sun or other light source in order to prevent glare and lens flare. Flare occurs when stray light strikes the front element of a lens and then bounces around within the lens. This stray light often comes from very bright light sources, such as the sun, bright studio lights, or a bright white background.

The geometry of the lens hood can vary from a plain cylindrical or conical section to a more complex shape, sometimes called a petal, tulip, or flower hood. This allows the lens hood to block stray light with the higher portions of the lens hood, while allowing more light into the corners of the image through the lowered portions of the hood.

Lens hoods are more prominent in long focus lenses because they have a smaller viewing angle than that of wide-angle lenses. For wide angle lenses, the length of the hood cannot be as long as those for telephoto lenses, as a longer hood would enter the wider field of view of the lens.

Lens hoods are often designed to fit onto the matching lens facing either forward, for normal use, or backwards, so that the hood may be stored with the lens without occupying much additional space. In addition, lens hoods can offer some degree of physical protection for the lens due to the hood extending farther than the lens itself.

Teleconverters

Teleconverters increase the effective focal length of lenses. They also usually maintain the closest focusing distance of lenses, thus increasing the magnification significantly. A lens combined with a teleconverter is normally smaller, lighter and cheaper than a "direct" telephoto lens of the same focal length and speed.

Teleconverters are a convenient way of enhancing telephoto capability, but it comes at a cost − reduced maximum aperture. Also, since teleconverters magnify every detail in the image, they logically also magnify residual aberrations of the lens.

Lens caps

Scratched lens surfaces can spoil the definition and contrast of even the finest lenses. Lens covers are the best and most inexpensive protection available against dust, moisture and abrasion. Safeguard lens elements - both front and rear - whenever the lens is not in use.