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Sony a9 II

35mm AF digital mirrorless camera

Specification

Production details
Announced:October 2019
System: Sony E (2013)
Imaging plane
Maximum format:35mm full frame
Mount and Flange focal distance:Sony E [18mm]
Imaging plane:35.6 × 23.8mm CMOS sensor
Resolution:6000 × 4000 - 24 MP
Shutter
Type:Focal-plane
Model:Electronically controlled
Speeds:30 - 1/32000 + B
Sensor-shift image stabilization:Yes
Exposure
Exposure metering:Through-the-lens (TTL)
Exposure modes:Programmed Auto
Aperture-priority Auto
Shutter-priority Auto
Manual
Physical characteristics
Weight:678g
Dimensions:128.9x96.4x77.5mm

Manufacturer description

SAN DIEGO — October 3, 2019 — Sony Electronics today announced Alpha 9 II (model ILCE-9M2). The latest model from Sony’s acclaimed line-up of α (Alpha) full-frame interchangeable lens cameras, the new model has been created to support working professionals in the fields of sports photography and photojournalism.

The new Alpha 9 II builds on the impressive legacy of the original Alpha 9, maintaining groundbreaking speed performance, including blackout-free continuous shooting at up to 20 frames per second with Auto Focus and Auto Exposure tracking at 60 calculations per second.

Updates include significantly enhanced connectivity and file delivery, continuous shooting at up to 10 fps with mechanical shutter, and evolved AF performance with newly optimized algorithms, re-designed build to enhance durability and operability.

“The voice of our customers is absolutely critical to Sony – we are always listening,” said Neal Manowitz, deputy president for Imaging Products and Solutions Americas at Sony Electronics. “The Alpha 9 II is the direct result of our work with agency, sports and news photographers since the launch of the original Alpha 9. We have added connectivity and network capabilities that drastically improve the professional workflow, while also making enhancements to design, interface and processing power that complete the user experience. Complemented by our extremely versatile E-mount system – with 55 native lenses introduced at this point including super-telephoto 600mm and 400mm G Master™ series lenses – this new camera is a tool unlike any other for professionals, whether in the field or on the field.”

Raising the Bar for Built-in Connectivity in the Professional’s Workflow

The Alpha 9 II includes a built-in 1000BASE-T Ethernet terminal, enabling gigabit communication for high-speed, stable data transfer operations. Additionally, File Transfer over SSL or TLS encryption (FTPS) is supported for increased data security and PC remote (tether) shooting performance is improved, with decreased release time lag and reduced live view screen delay when using the ‘Remote Camera Tool’ desktop application. The speed of the camera’s built-in wireless LAN functionality has also been increased, adding a stable and fast 5 GHz (IEEE 802.11ac) band, in addition to the 2.4 GHz provided in the Alpha 9. IEEE 802.11a/b/g/n/ac standards are all supported.

Designed to improve the speed of news agencies’ workflow, the Alpha 9 II features a new Voice Memo function that allows spoken information to be attached to images in the form of voice memos that can be replayed when the images are reviewed. The voice data can also be included with images sent to an editor, giving them important information needed for effective editing. Alternatively, a field photographer can also use the ‘Transfer & Tagging add-on’ “Imaging Edge™” application to transfer voice tags with the images to their mobile device and have the voice memos automatically converted to text and added to the JPEG images in the form of IPTC metadata. All of this can be done automatically or manually selected by the photographer.

By combining wireless voice/image transfer and automatic voice-to-text conversion with the ability to auto-transfer images with attached voice memos via FTP, it is possible to shoot and transfer the results to an FTP server without ever having to operate a smartphone. FTP settings within the app can also be sent to a camera via Bluetooth®, allowing for a faster workflow.

The Platinum Standard for Speed and Auto Focus Performance

The new Alpha 9 II shares the same acclaimed 35mm full-frame stacked 24.2 MP Exmor RS™ CMOS image sensor with integral memory as the original Alpha 9, giving it the same unmatched speed performance and outstanding image quality. The new model can shoot continuously and completely silently at 20 fps for up to 361 JPEG images or 239 compressed RAW images, with no viewfinder blackout allowing the photographer to follow the subject and action with no interruption to the EVF during picture taking. For times when mechanical shutter is preferred or required, the new Alpha 9 II has been improved to shoot at up to 10 fps, about 2x the speed of the Alpha 9.

The camera is able to function while continuously calculating Auto Focus and Auto Exposure at up to 60 times per second, with newly optimized AF algorithms that provide notably enhanced AF precision and performance, ensuring that even the most erratic subject motion that is associated with sports are captured with high precision. Also useful for sporting events, the camera now offers an anti-flicker shooting mode that automatically detects and adjusts for the presence of fluorescent or artificial lighting to maximize image quality.

The advanced focusing system in the new Alpha 9 II is far beyond the capabilities of any professional camera. Comprised of 693 focal-plane phase-detection AF points covering approximately 93% of the image area, as well as 425 contrast AF points, the Fast Hybrid Auto Focus system achieves extremely fast and accurate performance, ensuring all fast-moving subjects are accurately captured. Additional notable focusing capabilities include Real-time Eye AF with right eye / left eye selection, Real-time Eye AF for animal augmented with a new algorithm, Real-Time Eye AF for movie, Real-time Tracking, selectable focus frame color, Touch Pad focus point control while using the viewfinder and more. AF can also now continuously track even if continuous shooting is greater than F16, providing further accuracy for shots that require slower shutter speeds.  

Refined Build and Operability

  • Upgraded BIONZ X™ image processing engine gains maximum benefit from the sensor’s fast readout speed; processor works with front-end LSI to enhance speed in AF/AE detection, image processing, face detection and accuracy, and more
  • Upgraded dust and moisture resistant design to meet the needs of professionals in even the most challenging outdoor conditions; stronger sealing provided at all body seams as well as the battery compartment cover and media slot
  • Latest developed image-processing algorithm reduces noise in the medium-to-high sensitivity range while improving subjective resolution and image quality
  • 5-axis optical in-body image stabilization system that provides a shutter speed advantage of 5.5 steps
  • Improved grip configuration for even greater comfort and sure hold; compatible with Sony VG-C4EM Vertical Grip
  • Improved button design and feel; increased diameter and feedback of the ‘AF-ON’ button; a refined multi-selector joystick design; an exposure compensation dial lock button; and a redesigned shape and new position for the rear dial
  • Redesigned shutter mechanism to suppress even the slightest movement that can cause image blur; tested for durability in excess of 500,000 shutter cycles
  • USB Type-C™ connector that supports fast USB 3.2 Gen 1 data transfer
  • Dual media slots that are both compatible with UHS-I and UHS-II SD cards, allowing higher overall capacity and faster read/write speeds
  • Digital audio interface has been added to the camera’s Multi Interface Shoe™ (MI Shoe), enabling the new ECM-B1M Shotgun Microphone or XLR-K3M XLR Adaptor Kit to be connected directly to the MI Shoe for cleaner, clearer audio recordings

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35mm full frame

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

Travellers' choice

Note

Among autofocus lenses designed for 35mm full-frame mirrorless cameras only. Speed of standard and telephoto lenses is taken into account.

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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.

Electromagnetic diaphragm control system

Provides highly accurate diaphragm control and stable auto exposure performance during continuous shooting.

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.