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Martin Vronsky

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  1. Press Release: Panasonic introduces the World’s Smallest and Lightest1 Long Zoom Lens: LUMIX S 28-200mm F4-7.1 MACRO O.I.S. (S-R28200) A wide and long zoom range of 28-200mm, that fits all in the palm of your hand Newark, NJ (February 21, 2024) – Panasonic is pleased to introduce the LUMIX S 28-200mm F4-7.1 MACRO O.I.S. (S-R28200) lens based on the L-Mount system standard. Designed with meticulous attention to detail in optics and mechanics, the new LUMIX S 28-200mm is the world's smallest and lightest1 long zoom lens, with total length of 93.4mm2 (3.67 inches) and mass of approximately 413 g. (14.57 oz). The first wide-to-tele zoom for the LUMIX S Series lineup, the lens is compact and lightweight to match the camera body. In addition to delivering outstanding imaging performance with stunning bokeh, the lens is also capable of half life-size macro shooting and close-up photography from just 3cm between the end of the lens and the subject. With a wide range of focal lengths from 28mm wide angle to 200mm telephoto, a variety of scenarios from landscapes to portraits can be captured in high resolution with this single lens. The new 28-200mm boasts high-speed, high-precision, and silent autofocus, while its 5-axis Dual I.S. 2 (Image Stabilizer) compatibility compensates for up to 6.5 stops4 of correction to enable the creator to concentrate on capturing the subject. It also offers micro-step aperture control for smooth exposure changes, as well as the ability to choose between linear or nonlinear focus ring settings. These features have become hallmark characteristics of LUMIX S Series lenses. Main Features 1. Excellent Mobility with the World’s Smallest and Lightest1 Long Zoom Lens - The optical system and mechanism with attention to detail are designed to realize smaller size and lighter weight. - A total length of approx. 93.4 mm2 (3.67 inches) and a mass of approx. 413 g (14.6 ounces). 2. Ideally Suited to Capture Any Scenario - With the minimum shooting distance of 0.14 m3 (5.5 inches) and the maximum shooting magnification of 0.5x, half life-size macro shooting is possible).2 - Achieves high resolution, outstanding photographic performance, and stunning bokeh in entire zoom area, from the center of the image to the edges. - The long zoom lens covers a wide range of focal lengths from a 28mm wide-angle to a 200mm telephoto zoom. 3. Optimal Operability for Video Production - Effectively suppresses focus breathing, in which the angle of view changes caused by movements in the focus position. The LUMIX S 28-200 lens will be available at valued channel partners at the end of April 2024 for $899.99. 1. As of February 22, 2024. Among interchangeable lenses for AF compatible full-frame mirrorless cameras, and lenses with an optical zoom of 7x or more. Based on a Panasonic survey. 2. When focal length is 28mm. 3. 14cm from focal plane. 4. Based on the CIPA standard [Yaw/Pitch direction: focusing distance f=200mm. When LUMIX S1 is used.]
  2. Press Release: Future Firmware Update Plan for OM-1 February 21, 2024 – Thank you for your continued support of our products. Since the announcement of the OM SYSTEM OM-1 Mark II interchangeable lens camera on January 30, there have been many inquiries regarding the possibility of a firmware update to the OM SYSTEM OM-1 (released March 2022). As a result, we would like to advise of our plan for a future firmware update for OM-1: Future Firmware Update Plan for OM-1 Scheduled to be released around this autumn (northern hemisphere), the following changes for the OM-1 via a firmware update are planned: Autofocus: Improvement of some AF performance capabilities, such as S-AF and C-AF in all-target mode to improve capture of main subjects. Operability: Improved usability through the option to assign the trash (delete) button as a menu access shortcut. Please note the following: It will not include new features introduced with the OM-1 Mark II, such as Live GND and AI Detection AF for humans. It will provide some AF performance improvements only and therefore the new AF performance of the OM-1 will not match the OM-1 Mark II. We will continue to provide products and services that enrich the photography experience. * Details are subject to change
  3. Press Release: Sony Electronics Announces a New Compact FE 24-50mm F2.8 G Standard Zoom Lens Designed for High Performance and Portability A large-aperture, constant F2.8 standard zoom full-frame E-mount lens that delivers outstanding end-to-end image quality in a compact and lightweight form factor SAN DIEGO, Feb. 21, 2024 - Sony Electronics is pleased to announce the release of the FE 24-50mm F2.8 G standard zoom lens (SEL2450G), which is compatible with Sony's α™ (Alpha™) cameras. The 72nd addition to the full-frame E-mount lens lineup is extremely compact and lightweight yet maintains high-resolution performance synonymous with Sony's G lens series. With a constant F2.8 maximum aperture, it produces stunning bokeh and enables creative flexibility across the entire zoom range. The versatile 24mm to 50mm focal range, coupled with its compact form, enables users to capture a myriad of scenes including portraits, everyday snapshots, landscapes, and video. "The demand for light and compact standard zoom lenses is increasing, and our new FE 24-50mm F2.8 G lens offers a F2.8 standard zoom option for creators seeking portability, without a sacrifice. It is a lens option ready to go anywhere," said Yang Cheng, Vice President, Imaging Solutions, Sony Electronics Inc. "The FE 24-50mm F2.8 G is our first-ever full-frame F2.8 standard zoom lens in the G series lens lineup. Bringing the ever-popular F2.8 aperture from our G Master series into the G series is yet another example of our dedication to building lens options for every level of creator." Outstanding Optical Performance in a Compact Form Factor The FE 24-50mm F2.8 G's design is compact with a filter diameter of φ67 mm, maximum diameter of 74.8 mm (about 2.94 in), length of 92.3 mm (about 3.63 in), and weight of approximately 440 g (about 15.52 oz). Despite its compact size, the lens maintains exceptional image quality throughout all focal lengths. This is made possible by the incorporation of four aspherical lenses and two elements of Extra Low Dispersion (ED) glass. These advanced elements effectively minimize chromatic aberrations, resulting in high-resolution performance that remains consistent from the center to the corners of the frame. The FE 24-50mm F2.8 G's 11-blade circular aperture and well-controlled spherical aberration creates the beautiful, smooth bokeh known to the G lens series. Painstaking optical optimization has achieved impressive close-up performance at all focal lengths. It has a minimum shooting distance of 0.19 m (AF) at the wide end, and a maximum magnification of 0.30 x (AF) for detailed shooting. Fast and Precise Autofocus Capabilities for Both Stills and Video The FE 24-50mm F2.8 G is equipped with two linear motors to achieve extremely fast, precise, and quiet focusing with AF (autofocus). It also supports high-speed continuous shooting with AF/AE tracking of up to 120 frames per second, a feature offered on Sony's newest full-frame mirrorless camera, the Alpha 9 IIIi. The FE 24-50mm F2.8 G's AF capabilities make it advantageous for video production, especially when shooting in high frame rates like 4K 120p or FHD 240p movie recordingii . It supports in-camera Active Mode Image Stabilizationiii for fast paced shooting and is compatible with the Focus Breathing Compensation feature native to select Sony Alpha camerasiv. In addition, the Linear Response MF offers intuitive and precise manual focus adjustments, a feature beneficial for filmmakingv. Enhanced Controllability and Reliability The FE 24-50mm F2.8 G is equipped with intuitive controls designed to offer ultimate operability. These features include a customizable focus hold button, aperture ring, aperture click ON/OFF switch, and focus mode switch. Additionally, the lens' front element is fluorine coated, which effectively repels and effortlessly eliminates fingerprints, dust, water, oil, and other contaminants. This dust and moisture resistant design makes it a reliable option for any environment. Pricing and Availability The new FE 24-50mm F2.8 G will be available in May 2024 for approximately $1,099.99 USD and $1,499.99 CAD. It will be sold at a variety of Sony's authorized dealers throughout North America. For more information about FE 24-50mm F2.8 G, please visit: https://electronics.sony.com/imaging/lenses/all-e-mount/p/sel2450g Exclusive stories and exciting new content shot with the new FE 24-50mm F2.8 G and Sony's other imaging products can be found at www.alphauniverse.com, a site created to educate and inspire all fans and customers of Sony α - Alpha brand. Notes: I Sony test conditions. Maximum continuous frame rate may be lower in some shooting conditions. Continuous shooting speed may vary depending on the lens used in AF-C focus modes. Visit Sony’s support web page for lens compatibility information. II Depending on camera used. III Compatible models only. IV See camera compatibility info at: https://www.sony.net/dics/breathing/ Angle of view and image quality may change slightly when this function is [ON]. Effective compensation may not be achieved in all situations. V Not guaranteed to be 100% dust and moisture proof.
  4. Press Release: SIGMA 15mm F1.4 DG DN DIAGONAL FISHEYE 180° of high resolution An innovative diagonal fisheye lens Resolving power that overturns the conventional wisdom about fisheye lenses An addition to the Art F1.4 lineup, meticulously crafted for astrophotography A wealth of latest functions and excellent build quality The world's first* F1.4 diagonal fisheye interchangeable lens for 35mm full-frame. Unparalleled resolving power that overturns the conventional wisdom about fisheye lenses In developing a fisheye lens featuring an ultra-wide-angle and powerful fisheye distortion, SIGMA has achieved a completely new level of artistic potential, combining the world's first F1.4 aperture for consumer use with outstanding resolving power across the entire image. In terms of optical performance, the SIGMA 15mm F1.4 DG DN DIAGONAL FISHEYE | Art has achieved excellent point image reproducibility and high resolution by correcting various aberrations, especially sagittal coma flare. The lens is capable of handling astrophotography, which demands particularly high-quality performance, even when wide-open. Unlike conventional fisheyes, the SIGMA 15mm F1.4 DG DN DIAGONAL FISHEYE | Art is exceptionally sharp across its entire 180° angle-of-view and offers an ultra-fast F1.4 aperture, making it perfect for a wide range of applications including astrophotography, landscapes and architecture. The expressive power of this all-new full-frame mirrorless lens opens a wealth of creative possibilities in wide-angle photography. * As an interchangeable lens for full-frame cameras for consumer use. (As of February 2024 by SIGMA) [Key features] Resolving power that overturns the conventional wisdom about fisheye lenses The latest optical design thoroughly corrects each type of aberration. This diagonal fisheye lens has the unique expressiveness of a fisheye lens and high resolution throughout the entire image from a wide-open aperture. The performance of the lens is guaranteed by a full inspection with SIGMA's proprietary MTF measuring system. Even wide-open, high resolution and point image reproducibility across the entire image The lens consists of 21 elements in 15 groups, including 4 FLD and 3 SLD exclusive low-dispersion glass elements, and 2 aspherical lens elements. By correcting sagittal coma flare and other aberrations, the lens can precisely reproduce bright points of light across the whole frame even wide-open, making it ideal for astrophotography. Diagonal fisheye lens with 180° angle of view The powerful distortion effect, which is the appeal of fisheye lenses, allows users to enjoy expressions such as a unique perspective and emphasis on the subject at a 180° angle of view. In addition, the SIGMA 15mm F1.4 DG DN DIAGONAL FISHEYE | Art is designed with the strict performance standards of the Art line. Furthermore, all lenses are inspected with SIGMA's proprietary MTF measuring system. The unique descriptive power of this new fisheye lens, which combines an incredible 180° angle-of-view with very high resolution optics, delivers a level of artistic potential that exceeds other fisheye lenses. Designed to minimize flare and ghosting To prevent flare and ghosting, which reduce image quality, the lens is designed to handle all conditions of incident light based on state-of-the-art simulation technology. High backlight resistance enables clear and sharp images under any lighting conditions. 2. An addition to the Art F1.4 lineup, meticulously crafted for astrophotography The SIGMA 15mm F1.4 DG DN DIAGONAL FISHEYE | Art offers abundant functions to support astrophotography. With the introduction of this lens, SIGMA now has four F1.4 wide-angle prime Art line lenses with functions specifically designed for astrophotography, including the 14mm, 20mm, and 24mm. In terms of both lineup and functionality, SIGMA fully supports the joy of capturing the stars. MFL (Manual Focus Lock) switch The lens is equipped with an MFL switch. When the MFL switch is set to “LOCK,” the focus ring operation is disabled, ensuring that once focus is acquired, it will not be changed by unintentional movement of the ring. This is useful for long exposures and other situations where the focus should be fixed while shooting. Lens heater retainer A small step at the front of the lens called a lens heater retainer prevents the lens heater* from protruding over the front element, eliminating the risk of vignetting. * A belt-shaped heat strip that is wrapped around the lens to prevent condensation from forming inside the lens when the temperature drops. Rear filter holder A standard-equipped rear filter holder at the lens mount allows sheet-type filters to be used. Special cover lens cap with a locking mechanism and filter slots The included cover lens cap features two slots to securely store rear filters, as well as a locking mechanism. The cap is specially designed for the SIGMA 15mm F1.4 DG DN DIAGONAL FISHEYE | Art, allowing users to carry sheet-type filters without the risk of confusing or forgetting them, while protecting them from scratches and dirt. Tripod Socket The lens is equipped with an Arca-Swiss compatible, lightweight and sturdy magnesium alloy tripod socket. The detachable leg can be mounted on a tripod for stable conditions even during long exposures. The shape has been deliberately designed to prevent interference when using a lens heater. * The tripod socket TS-141 is also compatible with the SIGMA 14mm F1.4 DG DN | Art. A wealth of latest functions and excellent build quality The SIGMA 15mm F1.4 DG DN DIAGONAL FISHEYE | Art is equipped with various functions to assist shooting, including an AFL button*1 to which preferred function can be assigned and an aperture ring, and uses a linear motor HLA (High-response Linear Actuator) as the AF actuator to enable fast, quiet, and highly accurate AF shooting. The lens is also equipped with a dust and splash resistant structure*2 to ensure a high level of weather resistance and robustness, as well as excellent build quality that allows for long and reliable use in any environment. *1 Function available on supported cameras only. Available functions may vary depending on the camera used. *2 The structure is designed to be dust and splash resistant, but not waterproof. Be careful not to bring the lens in contact with a large amount of water. Water inside the lens may cause major damage and even render the lens unrepairable. Various shooting assist functions The lens is equipped with an AFL button which can be assigned to a range of functions via the menu on selected cameras. In addition to the aperture ring, the lens is equipped with an aperture ring lock switch and a click switch to turn the click on and off. Dust and splash resistant structure and water and oil repellent coating In addition to a dust and splash resistant structure, the front element of the lens features a water and oil repellent coating, allowing photographers to shoot without concerns even in harsh outdoor environments. Adopts a linear motor HLA The AF actuator is a linear motor HLA (High-response Linear Actuator). The high thrust motor and advanced electronic control operate the focus lens at high speed and with high precision to provide comfortable AF shooting. Excellent build quality To support the heavy optical system and enhance robustness and reliability, metal parts are used in key parts of the lens body. Meanwhile, the lightweight engineering plastic TSC* is also used in appropriate places to reduce weight. Furthermore, each control part, such as rings and switches, is designed to feel good. SIGMA is proud of the exceptional build quality of its products, which do not compromise on durability, operability, and a satisfying sense of ownership. * TSC (Thermally Stable Composite) is a type of polycarbonate with a thermal expansion rate similar to that of aluminum. It has a high affinity to metal parts which contributes to high quality product manufacturing. [Additional features] Lens construction: 21 elements in 15 groups (4 FLD, 3 SLD, 2 aspherical elements) Inner focus system Compatible with high-speed autofocus HLA (High-response Linear Actuator) Compatible with Lens Aberration Correction * Due to being a fisheye lens, distortion will not be corrected. * Function available on supported cameras only. Available corrections or auto correction functionality may vary depending on the camera model. * On cameras where lens aberration correction is controlled with ‘ON’ or ‘OFF’ in the camera menu, please set all aberration correction functions to ‘ON'(AUTO). Supports DMF and AF+MF Compatible with AF assist (for Sony E-mount only) Super Multi-Layer Coating Water and Oil Repellent Coating (front element) Aperture ring Aperture ring click switch Aperture ring lock switch AFL button * Function available on supported cameras only. Available functions may vary depending on the camera used. MFL (Manual Focus Lock) switch Rear filter holder (compatible with GUIDE PLATE GP-21) Lens heater retainer Focus Mode switch Support for switching between linear focus / non-linear focus ring settings (for L-Mount only) * Function available on supported cameras only. Dust and Splash Resistant Structure TRIPOD SOCKET TS-141 Special COVER LENS CAP LC1040-01 with a locking mechanism and filter slots Compatible with SIGMA USB DOCK UD-11 (sold separately / for L-Mount only) Designed to minimize flare and ghosting Every single lens undergoes SIGMA’s proprietary MTF measuring system 11-blade rounded diaphragm High-precision, durable brass bayonet mount Mount Conversion Service available “Made in Aizu, Japan” craftsmanship
  5. Press Release: SIGMA 500mm F5.6 DG DN OS The crystallization of technology. A whole new ultra-telephoto experience. Perfect for hand-held shooting, a 500mm lens with unparalleled optical performance Compact, lightweight and excellent build quality A wealth of functions to assist in a variety of shooting situations Clear, sharp images and amazing mobility A handy-size 500mm that offers a whole new shooting experience The SIGMA 500mm F5.6 DG DN OS | Sports is an ultra-telephoto prime lens exclusively for mirrorless cameras that features a 500mm focal length with outstanding image quality in a remarkably compact and lightweight body. By incorporating multiple large-diameter, exclusive low-dispersion glass elements that are challenging to process, SIGMA succeeded in significantly downsizing the lens construction without the use of diffractive optical elements. At the same time, the lens has achieved high resolving power that meets the expectations for a 500mm prime lens. The lens body, composed mainly of high-precision engineering plastic parts, has excellent build quality and weather resistance, including dust and splash resistant structure*, despite its compact size. With its rich descriptive power and incredibly compact size for its focal length, the handy-size SIGMA 500mm F5.6 DG DN OS | Sports offers a whole new photographic experience for wildlife, aviation, sports and other fast-action photographers. * The structure is designed to be dust and splash resistant, but not waterproof. Be careful not to bring the lens in contact with a large amount of water. Water inside the lens may cause major damage and even render the lens unrepairable. [Key features] 1. Perfect for hand-held shooting, a 500mm lens with unparalleled optical performance The latest optical design using exclusive low-dispersion glass elements has succeeded in achieving both an extremely compact lens construction and high optical performance with excellent correction of aberrations. In addition to its size that allows hand-held shooting, the high-speed AF with HLA (High-response Linear Actuator) and the OS2 optical stabilization algorithm support comfortable shooting. High optical performance and compact lens construction The latest optical design has succeeded in significantly downsizing the optical system for a 500mm ultra-telephoto lens. By utilizing exclusive low-dispersion convex elements at the front of the lens, the lens delivers both a high aberration correction capability and a short overall length. The high level of production technology at SIGMA’s only manufacturing base, the Aizu factory, provides the exacting precision necessary for processing the exclusive low-dispersion glass elements with a large aperture. The lens has excellent correction of all aberrations, especially axial chromatic aberration, which cannot be corrected by the camera body, ensuring a stable high resolution from the center to the periphery of the image. Excellent backlight resistance The SIGMA 500mm F5.6 DG DN OS | Sports uses refractive lenses in its optical system to prevent flare and ghosting that are characteristics of diffractive optical elements, allowing for clear images without concern for flare or ghosting even in backlit conditions or when a light source is included in the image. Furthermore, measures are taken against all conditions of incident light based on state-of-the-art simulation technology. High-speed AF with a linear motor HLA A linear motor HLA (High-response Linear Actuator) is used for the actuator, which is characterized by its high driving accuracy owing to the advanced electronic control, as well as its quietness. The HLA enables fast and accurate autofocus even in ultra-telephoto photography, such as sports and bird, where extremely precise focusing is required. OS2 algorithm in optical stabilizer function The latest OS2 optical stabilization algorithm provides an outstanding image stabilization effect of 5.0 stops*. The lens is equipped with two OS modes: Mode 1 is suitable for general shooting, and Mode 2 is ideal for panning shots of motorsports and other sports. In Mode 2, SIGMA’s Intelligent OS, an algorithm specially designed for panning shots, enables effective image stabilization even when the camera is moved vertically or diagonally, irrespective of the horizontal and vertical orientation. This ensures that the subject’s movement can be captured without losing the panning shot effect. * Based on CIPA guidelines (Measured at 500mm with a 35mm full-frame image sensor) 2. Compact, lightweight and excellent build quality The lens body has been designed to be small and lightweight in line with the optical system, which has been made significantly more compact. Not only is the lens easy to handle in hand-held use, but it also has the weather resistance of SIGMA’s Sports line specifications and the excellent build quality that SIGMA prides itself on in terms of texture and the operating quality of each ring and control. High-precision TSC* parts enable both high performance and compact, lightweight design In order to achieve such a compact, lightweight and robust body, materials such as TSC and magnesium have been used in appropriate places. In particular, the production of a large TSC part that integrates functions as an internal structure, as well as an exterior part to reduce size and weight of the lens are manufactured with micron-level precision and they also have a sleek finish that gives the lens its premium feel. The sophisticated processing and production technology of the Aizu factory, SIGMA's only manufacturing base in Japan, enables the high degree of precise production and ensures the high performance and durability of the lens. * TSC (Thermally Stable Composite) is a type of polycarbonate with a thermal expansion rate similar to that of aluminum. It has a high affinity to metal parts which contributes to high quality product manufacturing. Weatherability of Sports line specifications The mount connection, manual focus ring, switches and exterior connection are all dust and splash resistant to prevent dust and dirt from entering the lens. Further, the front element of the lens features a water and oil repellent coating to facilitate maintenance when water droplets or dust adhere to the lens. Cover-type lens hood included A lightweight, high-strength, exclusive cover-type lens hood made of TSC is included. The tip of the hood is rubberized to protect the lens from abrasion and scratches caused by placing the lens upside down. 3. A wealth of functions to assist in a variety of shooting situations The SIGMA 500mm F5.6 DG DN OS | Sports is equipped with a full range of assist functions including an aperture ring and three AFL buttons* ready to be assigned to preferred functions using the camera. The L-Mount version is also compatible with SIGMA’s tele converters for AF-enabled shooting at ultra-telephoto focal lengths of up to 1,000mm. * Function available on supported cameras only. Available functions may vary depending on the camera used. Full range of customizable functions Equipped with a Focus Limiter switch, the lens enables users to limit the focus driving range during AF when necessary, allowing quick and precise focusing. Further, the lens features three AFL buttons which can be assigned to a range of functions via the menu on selected cameras. The AFL buttons are easy to operate regardless of how the camera is oriented, and make accessing important settings quick and easy. For the L-Mount version, the SIGMA USB DOCK UD-11 can be used to set OS operation or the focus limiter range for the Custom Mode switch*. * The assigned setting for lenses for Sony E-mount cannot be changed from the default setting because a USB DOCK for the mount is not available. The default setting allows users to switch the visibility of the OS effect in the viewfinder and live view. Equipped with an aperture ring In addition to an aperture ring, the lens is also equipped with an aperture ring click switch and an aperture ring lock switch, allowing for aperture operation suited to the shooting application. Detachable tripod socket The lightweight and sturdy magnesium alloy tripod socket is Arca-Swiss compatible. The detachable socket comes with a ring that clicks into position at 90° intervals. * The tripod socket TS-151 is compatible with the SIGMA 70-200mm F2.8 DG DN OS | Sports. Tele Converter for L-Mount (1.4x / 2.0x) The L-Mount version of the lens is compatible with the SIGMA TELE CONVERTER TC-1411 (1.4x) and TC-2011 (2.0x). Using a tele converter, the focal length can be multiplied by 1.4x and even 2x, for AF-enabled shooting at ultra-telephoto focal lengths of up to 1,000mm. [Additional features] Lens construction: 20 elements in 14 groups (3 FLD, 2 SLD elements) OS (Optical Stabilizer) function with the latest “OS2” algorithm Inner focus system Compatible with high-speed autofocus HLA (High-response Linear Actuator) Compatible with Lens Aberration Correction * Function available on supported cameras only. Available corrections or auto correction functionality may vary depending on the camera model. * On cameras where lens aberration correction is controlled with ‘ON’ or ‘OFF’ in the camera menu, please set all aberration correction functions to ‘ON'(AUTO). Supports DMF and AF+MF Compatible with AF assist (for Sony E-mount only) Super Multi-Layer Coating Water and Oil Repellent Coating (front element) Aperture ring Aperture ring click switch Aperture ring lock switch AFL button (3 buttons) * Function available on supported cameras only. Available functions may vary depending on the camera used. Focus Limiter switch Focus Mode switch Support for switching between linear focus / non-linear focus ring settings (for L-Mount only) * Function available on supported cameras only. OS switch Custom Mode switch Dust and Splash Resistant Structure LENS HOOD LH1034-02 TRIPOD SOCKET TS-151 *Detachable lens foot type Compatible with SIGMA TELE CONVERTER TC-1411 / TC-2011 (sold separately / for L-Mount only) Compatible with SIGMA USB DOCK UD-11 (sold separately / for L-Mount only) Designed to minimize flare and ghosting Every single lens undergoes SIGMA’s proprietary MTF measuring system 11-blade rounded diaphragm High-precision, durable brass bayonet mount Mount Conversion Service available “Made in Aizu, Japan” craftsmanship
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