Panasonic announces joint initiative of NewTek AutoLink™ for Panasonic PTZ, automatically detecting Panasonic IP cameras for TriCaster and NewTek IP Series workflows
Panasonic and NewTek have joined forces to bring NewTek AutoLink™ to industry customers.
The new software application, which detects and automatically connects to Panasonic network-based PTZ cameras, provides quicker set up, easier integration and more efficient use of bandwidth.
The presence of Panasonic IP cameras is automatically detected from NewTek TriCaster® and the IP Series Video Mix Engine. Cameras become immediately available for use in networked video production workflows without any additional configuration.
There is no restriction on the number of IP cameras that can be connected, ready to take live into production. Video translation and transmission is also only initiated when the camera source is selected, crucially saving valuable bandwidth and system resources.
NewTek AutoLink is PC-based conversion software that allows camera control, NDI and streaming, and works with Panasonic IP enabled professional cameras supporting RTSP stream delivery over an Ethernet connection.
Compatible with Panasonic PTZ cameras, studio cameras and 4K box camera, AutoLink enables the user to manage orientation, zoom, focus and iris of supported cameras, and store and recall camera presets, directly from the user interface or a compatible controller.
“I see NewTek AutoLink™ as a huge benefit for the Australian market. Providing this software for our popular AW Series remote cameras delivers a real plug-and-play system that will truly streamline operations for existing and new production customers.”
Dr. Andrew Cross, president and CTO for NewTek added:
“NewTek and Panasonic share a vision of an IP workflow-driven production environment. The beauty is that you can connect as many IP cameras as needed – without using up all your available bandwidth.”
For more information, customers should contact their Panasonic Broadcast distributor or call Panasonic on 132 600.
Panasonic is proud to announce the LUMIX DC-GH5, its flagship digital single lens mirrorless camera that takes the LUMIX pedigree and a raft of innovations to create the most powerful hybrid ever designed for the uncompromising video professional. This much-anticipated model will be available in Australia in April 2017.
The DC-GH5 introduces a trio of world-firsts that make it an undisputed leader in its class. It is the first consumer digital camera to offer 4K 10-bit 4:2:2 25/30p video recording to SD Cardi; has the distinction of offering 4K quality video at 50/60 frames per second (fps)ii; and has evolved its original 4K Photo to the stunning 6K Photoiii.
In addition, this camera also offers unrivalled picture quality with a 20-megapixel sensor and 5-Axis Dual IS 2iv for outstanding stabilisation. The DC-GH5 is built with the demands of the professional in mind, from the weather-sealed body to its large-capacity batteries, dual SD Card slots and powerful Bluetooth and Wi-fi connectivity.
Doug Campbell, Senior Product Manager, Imaging, Panasonic, said: “It’s very exciting to launch this flagship camera which delivers professionals ‘the best of the best’, as it breaks new ground with its innovations across both video and hybrid photography.”
Key Capabilities
4K 10-bit 4:2:2 25/30p video recording to SD Card for the discerning video professional
The DC-GH5’s 10bit 4:2:2 video recording in 4K resolution captures over 1 billion colours – in comparison, other cameras in this class can only offer 16.7 million colours. The result is cinematic, subtle gradation and far more colour information. For the serious film maker, this provides significantly more editing flexibility in post-production.
In the past, this level of quality could only be achieved with a broadcast camera, far larger and heavier and costing many times more than the DC-GH5. To capture data, an external recorder would be needed, meaning additional cost and bulk. The DC-GH5’s sleek, powerful body and direct SD Card recording is a highly mobile and lightweight solution with no compromise on quality – meeting the demands of a range of challenging professional shooting conditions, particularly when the user can’t carry a lot of equipment.
4K 50p/60p video recording
The DC-GH5 is the only camera in its class to offer amazing 4K quality at 50/60fps. This higher frame rate is perfect for capturing very natural motion for applications such as documentary film making and news reporting. It’s also ideal for creating gorgeous slow motion footage while maintaining the level of detail provided by 4K resolution. And for those who need even higher frame rates for cinematic slow motion, the DC-GH5 is capable of recording at up to 180fps in full high definition.
20-megapixel Digital Live MOS sensor for incredible image quality
The DC-GH5’s 20-megapixel sensor – with the Low Pass Filter removed and a new Venus Engine processor – provides new levels of detail, outstanding low-light performance and impressive dynamic range.
Amazing 5-Axis Dual IS 2 stabilisation
Panasonic’s Dual IS 2 technology combines 5-axis internal stabilisation with the optical image stabilisation in selected lenses to provide up to 5 stops of image stabilisationv , even at telephoto focal lengths. Dual IS enables photographers to use much slower shutter speeds and ISO values and still achieve pin sharp results. Videographers can get incredibly stable performance when shooting handheld, even in the highest quality video modes. This is a revolutionary improvement for professionals, and will in many situations eliminate the need to carry a tripod or Steadicam rig.
Industry-leading 6K Photo
Panasonic was the first to introduce 4K Photo, allowing users to select a high quality still photo from a precise moment of video footage. Now, with 6K Photo, the DC-GH5 can record a burst of 18 megapixel still images continuously at 30fps with no buffer limit, so photographers never miss that decisive moment. The original 4K Photo now features twice the frame rate, capturing 60fps in 8-megapixel resolution. In 6K/4K PHOTO, three exclusive modes can be selected depending on the situation: 6K/4K Burst, 6K/4K Burst (Start/Stop) and 6K/4K Pre-burst.
A camera built for the exacting professional
The DC-GH5 has a magnesium alloy weather sealed construction that is splash, dust and freeze-proof, for professionals who rely on their equipment to keep performing in any environment. Panasonic’s heat dissipation technology prevents overheating and ensures the camera can record without time restrictions, even with stabilisation activated and using the highest quality 4K video modes.
The large capacity batteries enable hours of uninterrupted video shooting, and when paired with the optional battery grip the battery life is doubled. The Dual SD UHS-II Card slots – a first in a LUMIX camera – also provide the flexibility and protection of recording simultaneously to both cards or backing up data to the second SD Card slot.
These features make the DC-GH5 the best choice for wedding and event videographers, documentary photographers and film makers – and in any situation where a professional’s reputation rests on their ability to capture a once in a lifetime moment.
For precise shooting, the camera is equipped with a best-in-class 3.6 million-dot OLED viewfinder that has an increased magnification of 0.76x. This very large, crystal clear and highly accurate viewfinder delivers perfect results in the brightest outdoor conditions, supported by a sizeable 3.2-inch articulated touch screen monitor, with a sharp 1.6 million-dot resolution. Other features the field user will appreciate are full size HDMI output, removing the need for an adaptor and providing greater data protection. Bluetooth 4.2 Low Energy connection and secure 5GHz Wi-Fi® (IEEE 802.11ac) streamline field work with convenient remote control and sharing with other devices, and faster data transmission.
Key optional accessories and functionality
XLR Microphone Adaptor DMW-XLR1
When paired with the DMW-XLR1, the DC-GH5 gains two professional grade XLR inputs, enabling videographers to use their broadcast-level microphones. The adaptor is powered by the DC-GH5 battery and audio is transferred cable-free to the video file on the SD Card. This interface unit also supports 48 volt phantom power (which provides power to condenser microphones) and includes independent pads, low cut filters and gain control on each channel. The XLR1 also has a hot shoe mount on top to conveniently mount a microphone, wireless microphone receiver or a video light.
Battery Grip DMW-BGGH5
The Battery Grip is weather sealed, enables a second battery to be used and replicates the main camera controls for portrait shooting convenience, including the joystick.
V-Log compatibility (with purchase of V-Log L video recording software upgrade)
The DC-GH5’s V-Log profile enables videographers to capture footage with the same flat colour profile found in Panasonic’s Varicam broadcast camera. This profile offers exceptional flexibility as well as a wider dynamic range for colour grading in post-production. It increases the dynamic range in video shooting to over 12 stops of latitude and has similar characteristics to Cineon, which is a characteristic curve for film digitisation. V-Log is the best way to shoot for professionals looking to heavily colour grade, used in conjunction with 4K 10-bit 4:2:2 mode.
Scheduled upgrades
The camera will offer compatibility with 400-Mbps 4:2:2 10-bit All-Intra video recording in 4K 30p/25p/24p and Full-HD later in 2017. At the same time, Panasonic will also add high-resolution video recording in Anamorphic mode; 4K Hybrid Gamma Profile which is compatible with 4K HDR television; and USB tethering.
DC-GH5 pricing and availability
The DC-GH5 will be available in Australia in April 2017 from photographic specialists and consumer electronics retailers. The accessory battery grip and XLR microphone adaptor will also be available from April.
DC-GH5PRO – Pro kit with 12-35mm f2.8 lens (H-HSA12035E): RRP $3999
DMW-BGGH5E – Accessory Battery Grip: RRP $399
DMW-XLR1E – XLR Microphone Adaptor: RRP $499
Product Background
Sensor providing unprecedented image quality from a LUMIX camera
The DC-GH5 has a new 20-megapixel Digital Live MOS sensor with the Low Pass Filter removed for enhanced resolution and detail. In addition, the new Venus Engine has a number of technologies that are designed to deliver a stunningly natural image. Multipixel Luminance Generation ensures that even pixels on the edges of images are precise without false colours. Three-dimensional Colour Control balances hue, saturation and brightness for rich colour reproduction from dark to light. High Precision Multi Process Noise Reduction both identifies noise and preserves detail, supporting low-light shooting at ISO 25600.
The Digital Live MOS sensor’s signal readout speed is 1.7x faster than the GH4, and the Venus Engine processes the signals 1.3x faster. As a result, the DC-GH5 can capture high quality stills and video while utilising the full sensor area, even when shooting in 4K 50/60p and 6K Photo modes. This ensures the lens’ full angle of view is maintained.
Extensive professional features
Versatile file formats – MOV, MP4, AVCHD Progressive and AVCHD – are available at a variety of frame rates, and there is no recording time limit for both FHD and 4K video. Professionals can switch recording frequencies between 59.94Hz / 50.00Hz / 24.00Hz. Panasonic also offers a suite of professional video effects. VFR (variable frame rate) recording with overcranking and undercranking for quick motion is available for the first time in 4K (60fps, maximum 2.5x slower) as well as Full HD (180fps, maximum 7.5x slower)vi. The minimum frame rate for quick motion video is 2 fps. Time Lapse video can also be produced in-camera, with Focus Transition which can be set in advance to move the focus between different subjects. In addition to ‘Cinelike D’ and ‘Cinelike V’ gamma settings, the DC-GH5 provides 709-like gamma and knee control for HDTV compatibility.
The DC-GH5 offers a host of other practical features in response to requests from professional users. They include Waveform Monitor Display; SMPTE-compliant Time in Rec Run or Free Run to synchronise multiple video footage or sound sources in post-production workflow; Luminance Level selectable between 64-1023 / 64-940 / 0-1023 (10-bit); Synchro Scan to suppress flicker; Master Pedestal adjustment with ±15 steps; and Color Bars (SMPTE / EBU / ARIB Standard).
New AF system with DFD Technology ensures you never miss a once-in-a-lifetime moment
Panasonic’s Contrast AF with DFD (Depth From Defocus) technology has been further advanced to enhance performance when tracking moving subjectsvii. The speed of the sensor drive during auto focusing is 480 fps, twice as fast as the GH4. The DC-GH5 is able to achieve ultra high-speed AF of approximately 0.05viiisec and 12 (AFS)/ 9 (AFC) fps high-speed burst shooting in full resolution with mechanical shutter.
For amazingly precise focusing, the focus areas have been increased from 49 to 225. Users can create a group of 225 focus areas and move or change it in size according to the composition. Panasonic also offers Face/Eye Recognition, Tracking AF, 1-area AF and Pinpoint AF.
All focusing operations can be controlled with the new joystick located on the thumb position, so the user does not have to take their eye off of the subject even when using the LVF or releasing their finger from the shutter button. The LUMIX GH5 is equipped with AF Custom Settings, including AF Sensitivity, AF Area Switching Sensitivity and Moving Object Prediction Level. Four presets are available for frequently used situations.
High mobility and rugged design for heavy field use
To be tough enough to withstand heavy field use, the DC-GH5 has a magnesium alloy full diecast front/rear frame. Secure construction and sealing for every joint, dial, and button make the LUMIX DC-GH5 not only splash and dust-proof but also freeze-proof down to -10 degrees Celsius.
The DC-GH5 offers dual SD Memory Card slots, compatible with high-speed, high capacity UHS-II. Users can select Relay Recording, Backup Recording or Allocation Recording modes. In Relay Rec, data is automatically written to the SD Memory Card in the second slot when the SD Memory Card in the first slot is full. Backup Rec captures data to both SD Memory Cards simultaneously. In Allocation Rec, data is automatically allocated to the designated SD Memory Card according to the type of content – RAW, JPEG, 6K/4K PHOTO, or video. Both slots have access lamps so it is easy to see at a glance if the card is in use.
Ensuring precise focus, the impressively-designed OLED (Organic Light-Emitting Diode) Live View Finder (3,680K-dot) has an increased magnification of 0.76x (35mm camera equivalent). The high-speed OLED technology delivers a time lag of less than 0.01 secix and an exceptional 10,000:1 high contrast ratio. An eyepoint distance of approx. 21 mm improves visibility for glasses wearers. The 3.2-inch 1620K-dot touch-control rear monitor uses a pixel structure of RGB (Red / Green / Blue) and White for even higher visibility in bright sunlight. It has a versatile 270-degree tilting design.
The durable shutter unit offers a life of around 200,000 releases, and a lightning-quick shutter speed of up to 1/8000 sec (mechanical shutter) or up to 1/16000 sec (electronic shutter). The external flash can be synchronised with max.1/250 second shutter speed.
[i] 4:2:0 8-bit in 4K 50p/60p on an SD Memory Card [ii] For a Digital Single Lens Mirrorless camera as of 4 January, 2017 [iii] 6K PHOTO’ is a high speed burst shooting function that cuts a still image out of a 4:3 or 3:2 video footage with approx.18-megapixel (approx. 6000 x 3000 effective pixel count) that the 6K image manages. [iv] 5-Axis Dual I.S.2 can be used with the H-FS12060 and H-FS14140 (requires firmware update) as of January 4, 2017. The firmware for 5-Axis Dual I.S.2 with H-RS100400 will be released in February 2017. H-ES12060, H-HSA12035, H-HSA35100, H-FSA45200 and H-FSA100300 are all compatible with 5-Axis Dual I.S.2. [v] Based on the CIPA standard [Yaw/Pitch direction: focusing distance f=50-140mm (35mm film camera equivalent f=100-280mm), when H-FS14140 is used. [vi] In 24p playback. Effect value varies depending on the recording format and frequency. [vii]Contrast AF with DFD Technology works only with Panasonic Micro Four Thirds lenses [viii] In AFS, at wide-end with H-ES12060 (CIPA). [ix] Panasonic measurement standard.
Panasonic’s latest FZ Series super telephoto camera, the DC-FZ80, is feature-packed for great appeal and versatility. Capabilities include a powerful 60x zoom lens spanning 20mm-1200mm; 4K technologies including 4K Photo, 4K Video and Post Focus; an 18-megapixel sensor; Depth from Defocus for highly responsive autofocus; plus a Live View Finder and touch screen.
The LUMIX DC-FZ80 is priced at $599RRP and will be available in Australia in March from photographic specialists and consumer electronics retailers.
Key features
Powerful zoom lens
This very affordable camera provides impressive wide angle shooting and homing in on distant subjects. The DC-FZ80 has an exceptionally versatile LUMIX DC VARIO 20mm ultra wide-angle lens with a 60x optical zoom (35mm camera equivalent: 20-1200mm) – capturing around 140% wider angle of view compared with a 24mm lens. POWER O.I.S. (Optical Image Stabiliser) with Active Mode suppresses blur in video and still image recording.
The latest 4K capabilities
The DC-FZ80 boasts 4K Video and 4K Photo, giving the photographer even greater scope to capture breathtaking shots. The camera offers 4K video recording at 4x the resolution of Full HD (3840 x 2160). 4K Live Cropping provides video shooters with amazing flexibility – for example, cropping to create smooth, slow zooms or stable pans – while maintaining Full HD picture quality in the final footage.
For still shooting, 4K Photo with 4K Pre-burst mode shoots 30 frames per second before and after the shutter is released to capture the defining shot. Batch Save stores an entire burst sequence of up to 150 frames at just one press of a button. Light Composition mode saves the brightest pixels from a series of shots in-camera, to produce more dramatic images of night scenes such as fireworks.
Panasonic’s Post Focus feature allows the user to choose the focal point of an image after it’s been taken. From a single photo you can create multiple shots with different focus points. Supplementing this, Focus Stacking allows the user to combine focal points to achieve complete foreground to background focus.
Impressive image quality and responsiveness
The new 18.1-megapixel High Sensitivity MOS Sensor, together with the Venus Engine image processor, elevates response, sensitivity and image quality to an even higher level.
The camera is quick and responsive to support the demands of dynamic telephoto shooting. Depth from Defocusi technology minimises focusing time. The camera and the lens exchange the digital signal at max 240fps, allowing the camera to achieve an autofocusing speed of approx. 0.09 seciI. This capability is particularly impressive when paired with the DC-FZ80’s super telephoto focal length lens. The camera offers high-speed burst shooting at 10 fps (AFS) / 6 fps (AFC) in 18.1-megapixel full resolution with a mechanical shutter.
Intuitive controls
The DC-FZ80 has a 1170K-dot Live View Finder (LVF) with a magnification ratio of approx 0.46x (35mm camera equivalent in 4:3). The high 60-fps frame rate minimises image lag to shoot fast-moving subjects. A 3-inch 1040K-dot touch control rear monitor provides quick focusing and shutter release, and supports after-shooting operations including selecting 4K Photo shots or setting Post Focus. Full manual control and P/A/S/M mode allow advanced users to enjoy more creative photography. The grip design has been re-engineered for stability during extended shooting.
Other key features
Flexible video recording options include High Speed Video for fast motion recording at 120fps/100 fps 50Hz/FHD. Time Lapse and Stop Motion Animation are also available.
The new pocketable LUMIX DC-GX850 combines superior shooting features with style. This entry-level GX Series model has powerful 4K Photo and 4K Video features; an attractive design in a choice of orange, ‘cherry blossom’, or two-tone black and silver; and a handy 180-degree flip-up rear monitor ideal for video blogs.
Doug Campbell, Senior Product Manager, Imaging, Panasonic, said: “This compact system camera offers true quality and value, with all the core LUMIX G Series features so first-time photographers can capture stunning shots. With its introduction, our entire G Series range now offers our 4K suite of technologies. 4K Photo means you can be confident in capturing that fleeting moment to share with friends. And, 4K Video recording that fits in your pocket really brings vlogs to life.”
The LUMIX DC-GX850 is priced at $799RRP and will be available in Australia in March from photographic specialists and consumer electronics retailers.
Powerful 4K
The DC-GX850 has Panasonic’s very latest 4K capabilities, including 4K Video recording at 4x the resolution of Full HD. The DC-GX850 captures smooth 4K Video in 3840 x 2160 at 30p/25p/24p in MP4i, in addition to Full HD 1920 x 1080 50p/60p.
Say goodbye to the disappointment of pressing the shutter too early or too late – the camera is designed to capture the unmissable moment. 4K Photo captures split-second shots with total precision by shooting 30 frames per second before and after the shutter is released. In addition, Batch Save stores an entire burst sequence of up to 150 frames at just one press of a button.
Light Composition combines the brightest pixels from a series of images to create vibrant night scenes such as fireworks.
Once set, Post Focus allows you to choose the focal point of an image after it’s been taken. You can then use the touchscreen to select the exact area you want to focus on – ideal for macro shots of food. Focus Stacking allows the user to combine focal points to achieve complete foreground to background focus.
High-resolution, responsive shooting
The stylish, sleek DC-GX850 compact system camera has a high-quality 16.0 megapixel sensor for crisp, detailed images, combined with technologies for precise focus and fast, responsive shooting. An attractive and versatile matching silver LUMIX G lens is supplied with the camera – the LUMIX G VARIO 12-32mm / F3.5-F5.6 ASPH./MEGA OIS.
The fast, accurate Contrast AF System features DFD (Depth From Defocus) technology exchanging digital signals between the camera and the lens at a max. 240 fpsii, to achieve ultra-fast autofocusing of approx. 0.07 seciii. High speed burst shooting at 5.8 fps (AFS) / 5 fps (AFC) captures fast-moving subjects in crisp focus.
The DC-GX850 offers an array of clever autofocus features for the user, including Low-Light AF with autofocus in -4EV lighting; Starlight AF for capturing subjects such as stars in the sky at night; as well as 49-point focus detect, Custom Multi AF, Face/Eye Detection AF, Face Recognition AF and Pinpoint AF.
Hands free selfies with the flip-up monitor
The LUMIX DC-GX850 has a large 3.0-inch 1040K-dot touch control monitor that flips 180 degrees. It offers high visibility for outdoor shooting, minimising reflection.
Once the LCD monitor is flipped up, Self Shot Mode is triggered. Capabilities include Face Shutter, which triggers the shutter after you wave your hand in front of your face, and Buddy Shutter, which operates when the camera detects two faces next to each other. This is ideal to take a quick shot with friends, especially when using a selfie stick. In these modes, the camera can take the shot immediately, or after a 3-second or 10-second countdown.
Panasonic has also introduced some new modes to enhance creativity. A Panorama Selfie mode takes advantage of the flip up screen to fit in large groups against dramatically scenic backgrounds. Background Control mode offers Defocus, where the subject’s face is sharp and the background is blurred for a natural, attractive portrait; and Clear, where the subject and background are both sharp.
The remote control Jump Snap feature is designed for fun group shots – the acceleration sensor on a smartphone detects the highest point of a jump and releases the camera shutter via Wi-Fi and the Panasonic Image App.
Ease of use and creativity
Full wireless control and photography via the Panasonic Image App
Snap movie mode makes it simple to quickly capture and share a 2.8-second creative video across Vine, Instagram and Facebook
RAW image processing in-camera
User-friendly Intelligent Auto shooting-assist mode for beginners
[i] Recording stops when the continuous recording time exceeds 5 minutes with [MP4] in [4K] [ii] Contrast AF with DFD Technology works only with Panasonic Micro Four Thirds lenses [iii] In AFS, at wide-end with H-FS14140 (CIPA)
The new lens is the first LEICA F2.8-4.0 lens Panasonic has introduced and the company plans to expand this new LEICA Series with additional lenses. An 8-18mm (16-36mm, 35mm camera equivalent) wide zoom lens and 50-200mm (100-400mm, 35mm camera equivalent) telephoto zoom lens are presently under development.
The LEICA H-ES12060E is a highly mobile lens, with outstanding optical performance for video and still recording across its versatile 5x wide angle to telephoto zoom range. The lens has a rugged splash and dustproof design for field use and is freeze proof down to -10℃. Enhancing the low-light performance of the wide aperture, the POWER O.I.S. (Optical Image Stabiliser) effectively compensates for blurring, making it easy to shoot in dim lighting.
The LEICA H-ES12060E has a compact internal design with a 9-blade aperture diaphragm that produces bokeh with a smooth, circular shape. The lens incorporates 14 elements in 12 groups, including four aspherical lenses and two ED (Extra-low Dispersion) lenses for precise imaging. Panasonic’s Nano Surface Coating technology minimises ghosts and flaring. The lens is available in a stylish metallic black.
In addition, further strengthening the capabilities of its DSLM (Digital Single Lens Mirrorless) interchangeable lens lineup, Panasonic has refreshed four of its LUMIX G lenses to support the advanced functions of the latest LUMIX G digital cameras
Panasonic’s four stylish new LUMIX G lenses are:
LUMIX G X VARIO 12-35mm / F2.8 II ASPH. / POWER O.I.S. (H-HSA12035E)
LUMIX G X VARIO 35-100mm / F2.8 II / POWER O.I.S. (H-HSA35100E)
LUMIX G VARIO 45-200mm / F4.0-5.6 II / POWER O.I.S. (H-FSA45200E)
LUMIX G VARIO 100-300mm / F4.0-5.6 II / POWER O.I.S. (H-FSA100300E)
These lenses also boast dust and splash-proof durability, bringing to nine the number of LUMIX G lenses that feature a rugged design to withstand use under harsh conditions.
The new LUMIX G lenses and the LEICA H-ES12060E are built for powerful stabilisation in all situations. They offer POWER O.I.S. (Optical Image Stabiliser) and also work with the Dual I.S. (Image Stabiliser)*1, 5-axis Dual I.S.*2, and the 5-axis Dual I.S. 2*3 systemi when mounted on an applicable Panasonic LUMIX DSLM camera. They are also compatible with the LUMIX G sensor drive at 240fps to take advantage of the high-speed, high-precision Contrast AF.
Notably, the five new lenses excel in video recording performance. In addition to the silent operation achieved by the inner focus drive system, the micro-step drive system in the aperture control section helps the camera to smoothly catch up to the brightness changes when zooming or panning. The AF tracking performance in zooming is also improved thanks to high-speed frame analysis for focus control.
