SONY A9 Professional Full-Frame Camera in Box
- Pattaya City Central
- 16 Jun 2021 : 15:57 pm
- ID: 431847
Shutter count: 4xxx Review: https://www.kenrockwell.com/sony/a9.htm Mint condition used body with Body cap, Sony NP-FZ100 battery, Sony BC-QZ1 Wall charger, Sony Alpha 9 strap, USB cable, unpolarized AC power cord, Sony hot shoe cap, Sony FDA-EP18 Eye cap, User Manual, Docs, Box. English / Thai + menu. The first Sony mirrorless with two card slots, and has the toughest mechanical shutter of any camera ever, "tested" to 500 000 cycles! The mechanical shutter is tough, and the silent electronic shutter has no moving parts to wear out — ever! https://www.sony.co.th/th/electronics/interchangeable-lens-cameras/ilce-9 New image sensor - 35mm full-frame stacked CMOS sensor with integral memory : https://www.youtube.com/watch?v=6Q-nzcf8Pkw Unveil | α9 | Sony | α : https://www.youtube.com/watch?v=HF2GOmsOr40 20 Silent FPS, 24MP stabilized full-frame, ISO 204800, 4K Stereo ● 24.2MP Full-Frame Stacked CMOS Sensor ● BIONZ X Image Processor & Front-End LSI ● 693-Point AF System & 20 fps Shooting ● Blackout-Free Quad-VGA 3.7m-Dot OLED EVF ● Internal UHD 4K Video Recording ● 5-Axis SteadyShot INSIDE Stabilization ● 3.0″ 1.44m-Dot Tilting Touchscreen LCD ● ISO 204,800, Silent Electronic Shutter ● Built-In Wi-Fi/Bluetooth, Dual SD Slots ● Integrated LAN and PC Sync Terminals Not only do its images look great in every light and are always sharp and well exposed under very difficult and active conditions, the Sony A9 is a huge advance in sports, news, concert, motion-picture stills and corporate shooting because it does all this at 20 frames per second, tracking autofocus and setting exposure at 60 FPS in the background, and the best part is it does this in complete and total silence. It is an unworldly experience to be motoring along at 20 FPS with full tracking exposure and autofocus, get great exposure and color in each shot, and have this happen in complete silence. It offers full autofocus over the entire frame, not just in the center of the picture like full-frame DSLRs. Autofocus is essentially instantaneous with the right lenses, and even with good consumer lenses it can track fast-moving targets in the dark at night. It's also the first Sony mirrorless with two card slots, and has the toughest mechanical shutter of any camera ever, "tested" to 500,000 cycles! The mechanical shutter is tough, and the silent electronic shutter has no moving parts to wear out — ever! Battery life is fantastic for sports shooting. While CIPA rated for only 480 shots for one-shot-at-a-time amateur shooting, in actual sports shooting where I make long bursts at 10 FPS, I can shoot 1,800 frames and only use 33% of the battery's capacity — or about 5,400 shots on a full charge! At 20 FPS I'd probably get even more. The A9 is a landmark in photography; no pro camera has ever been able to go this fast, much less do it in complete silence. My A9's tracking autofocus is the best I've ever used — better than the Nikon D5 or Canon 1DX Mk II — because it locks-on to the subject and tracks it longer and farther than any other AF system. It's crazy how my A9 finds the face all by itself, locks-on, tracks and won't let go like a pit bull all over the frame, even at the sides and corners. If there are multiple faces and the closest one turns away, my A9 actually pulls focus to the next nearest face immediately, always keeping the most relevant face in perfect focus. It's completely unlike any other pro camera; the closest thing before has been the RX10 Mk III which has a similar system and also works amazingly well. The A9 never misses a shot: it finds, tracks and keeps in focus whatever it is you're trying to shoot, and does it all automatically, presuming you're using a Sony GM lens that's up to the task. A lot of this is because the A9's AF system is always looking at the subject, while at fast frame rates DSLRs spend very little time each second looking at the subject because the mirror is flipped up making exposures half the time or more. The Sony A9 is all about Sony's newest-technology image sensor which, for the first time ever in full-frame, lets the A9 read the image from the entire sensor at about the same time. Because it's essentially read-out at once, gone are the "rolling shutter" effects of the past. The A9 is in a completely different world than the older Canon 1DX Mk II and Nikon D5. The A9 runs significantly faster and with more resolution, but most importantly, does this in complete silence and the finder never blacks-out or gets smeary. You won't even know it's shooting other than the thin gray frameline that blips in the finder to let you know it's capturing frames. You won't believe me until you get your own A9. The silent shutter mode isn't on by default; you have to set it at MENU > Camera 2 > page 4/9 > Shutter Type > ELEC. In silent mode you can be blazing away at twenty full 24 MP frames per second, even in raw with the A9's huge buffer, and no one may notice you're shooting. By comparison, every single frame in the "quiet" modes of the pro Canon 1DX Mk II and Nikon D5 are so loud that I can hear them echo off the neighbor's houses. The pro DSLRs are the very loudest cameras of all. The A9 isn't about light weight, even though it's about as light as Sony's other full-frame cameras; the A9 is about outshooting Canon or Nikon, and doing it silently. The A9 is smaller and lighter than most, but not all, DSLRs, but when you add full-frame lenses to it, it loses most of the weight advantage. With a 50mm or 55mm f/1.8 lens, some full frame DSLRs like the Canon 6D actually weigh the same or less. Many buttons are programmable, so you can program them to do just about anything. It has three memory recalls on its top mode dial, so it's easy to set up one for photos of things (Vivid picture with +3 Saturation), one for people pictures (standard color with +1 Saturation), and the other for anything else, like sports or a custom white balance. If three memories aren't enough, there are four more hidden ones, M1, M2, M3 and M4, which are almost as easy to recall. The AF and advance modes (frame rates) have their own knobs, so these don't save and recall. New All-new sensor technology allows the camera to read the entire sensor almost at the same time, so the "rolling shutter" and blackout effects of earlier cameras are gone. We can shoot at 20 FPS and the finder never blinks. This is the first time anyone has done this in full-frame; the RX100 Mk V does this, but with a much smaller sensor. 693 phase-detection AF points cover the entire full-frame image. Your subjects can run, but they can't hide in the sides of the image. Calculates exposure and autofocus at up to 60 frames per second. Two card slots. New thumb-nubbin controller on rear. Three memory recalls on the top mode dial, with four more presets almost as easy to recall. Drive mode dial. Focus mode dial. Two separate AEL and AF-ON buttons, instead of just one button with a selector lever as on A7RII, A7SII, A7II and A7. C3 button moved to left side of camera; it's on the right on A7RII, A7SII, A7II and A7. New, bigger NP-FZ100 battery lasts about 1,500 shots with burst shooting (rated 480 single shots). In-camera 5-axis sensor-shift stabilization claims 5 stops improvement. Turns on 30% faster than the A7R II; turns on and ready to shoot as quickly as I can bring it to my eye. Shoots 4K video using the entire 36mm width of the image sensor. Uncompressed 4K HDMI output (but the A9's LCD won't work in this mode). XAVC S high-bitrate video formats for 50~100 MBPS video. Under- and over-crank video from 1 FPS to 120 FPS, MOS (without sound). Good Magnificent electronic finder: always big, bright, sharp and wonderful in any light. Super-bright in daylight, and dims perfectly indoors and at night. Two card slots. Hybrid AF system uses phase-detection for speed and contrast detection for ultimate precision and accuracy. Battery life seems almost unlimited (up to 5,000 shots or more) running bursts at 20 FPS with the silent shutter. Solid mostly metal construction. Even the regular mechanical shutter only moves at the ends of exposures. There's never any need for a special vibration-free mode; it always works this way. Suck on that, LEICA! Excellent high ISO performance. Facial recognition works well, but only after you find it and turn it on. In-finder 2-axis level works great for keeping horizons and vertical lines as they should be. In-camera, as-shot automatic lens vignetting, lateral chromatic aberration and distortion correction. Almost any lens of any brand or age can be adapted to work - but with no lens corrections. Stereo microphone built-in. 3.5mm powered mic and headphone jacks. Can extract stills from video, in-camera after it's shot. In other words, shoot 4K video and you can pull-out 8MP stills shot at 30 FPS. Bluetooth & NFC... The A9 uses the Sony E-Mount, formerly called the NEX mount, whose shallow 18mm flange focal distance allows better lens designs than DSLRs do — the same advantage rangefinder cameras have, as well as allowing just about any lens to mount with an adapter. The A9 works best with all the lenses made by Sony, Zeiss and others for Sony's mirrorless E-Mount. If you mount a Sony or Zeiss APS-C lens, it automatically uses only the central APS-C section of the full-frame sensor. You'd never know, since all the displays just look right. It's that seamless, but sort of silly to waste most of this camera's sensor area with an APS-C lens. While you can adapt any lens of any brand or age to the A9, they won't work as well as native Sony or Zeiss FE lenses, or Alpha or MAXXUM lenses with the LA-EA4 adapter. Those lenses autofocus extremely well, but once you use an off-brand lens or adapter, lenses that perform magnificently on their own brand of camera may or may not autofocus that well. If you demand the best performance, just use the same brand of lens as your camera. Adapters should never be your go-to for the best performance. Don't expect the best results for sharpness or for autofocus from other-brand adapters if you're picky. Adapters are great for fun; you can get adapters cheap for any kind of lens, but not only may autofocus be iffy, adapted wide-angle lenses usually aren't very sharp on the sides at large apertures because Sony's full-frame mirrorless sensors are optimized for lenses with a curved fields. Most other adapted lenses won't seem very sharp on the sides at large apertures due their flat fields not interfacing well with the curved fields needed by Sony's sensors on these cameras. If you get the center in focus, the sides will probably be off, and if you get the sides in focus, the center will be off. This is more of a problem with wider lenses and at large apertures; stop a lens down and the sides will come into better focus. The A9 runs at its full 20 FPS with adapted manual-focus lenses. Metabones Mark V Adapter (you can buy in our shop) The Metabones Canon EF to Sony E-Mount Mark V Adapter is the best I've used. It works with every crazy Canon lens with which I tried it, and the results were usually much sharper than I expected. Silent shooting: no one asks why I'm taking pictures, period. Sensor-stabilization makes it easy to hand hold at 1/15. While LEICA lenses are the world's finest, they are not designed for the curved fields or rear nodal point positions optimized for the Sony cameras, and like all other adapted lenses, perform more poorly than Sony's own lenses because the sides and corners often aren't in proper focus. LEICA lenses of 35mm and wider aren't as sharp as they should be at the sides. They sharpen up as stopped down, but if you want great results, use LEICA lenses on a LEICA camera, or use Sony's lenses on the A9. It all has to do with the specific alignment of micro lenses and layer configuration towards the sides of the sensor. Specifically, there is a lot of field curvature induced by the design of the Sony sensor, and to focus at infinity at the sides with a modern semi-retrofocus LEICA SUPER-ELMARIT-M 21mm f/3.4 ASPH, you have to turn the focus ring to about 10'/3 meters! With the 1959 SUPER-ANGULON 21mm f/4 whose rear nodal point really is only about 21mm away from the image plane, you have to set the focus ring to about 3'/1 meter to get things at infinity in focus at the sides!!! Because of this, I've tried and confirmed that my cheap Voigtländer 21mm f/4 works about as well on my A9 as my genuine ASPH LEICA 21mm. Not only does the combination of a LEICA (or other traditional Nikon or Canon) lens and Sony A9 sensor induce field curvature (there are a lot of optics and micro lenses on a sensor before you get to the light-sensitive part), it also induces astigmatism: the sagittal and meridional planes diverge. There's no need to splurge for the latest APO ASPH LEICA lenses since the LEICA's (or anyone else's) lenses, with their flat fields are never going to be that sharp across a frame that's expecting a curved field lens. Therefore, it's best to select the lightest-weight (older) lenses rather than the hottest new ones. The performance of my LEICA SUMMICRON-M 35mm f/2 (7-element) is the same as with the newest LEICA SUMMICRON-M 35mm f/1.4 ASPH (floating element), so I prefer to use the older, lighter lens. Here are two samples shot with the LEICA SUPER-ELMARIT-M 21mm f/3.4 ASPH at f/3.4 on the Sony A9. Click either to get the camera-original file and look at each at 100%: Summary Stick with lenses sold by Sony, be they branded Sony or Zeiss, for the best results as you expect. Sony's GM lenses are especially excellent in every way on the A9. Adapting lenses of other brands, even though these lenses may be state-of-the-art on those manufacturers' cameras, probably won't be that breathtaking on the A9 — or any other camera of a brand different than the lens' manufacturer. Stick to Sony G and GM lenses on the A9 and you won't go wrong. Auto ISO Upper and lower limits selectable from ISO 100 to ISO 204,800 in full stops (limited to ISO 102,400 for video and ISO 25,600 with silent electronic shutter). Slowest shutter speed settable in full stops from 1/16,000 to 30s in full stops, as well as an Auto setting that varies with the lens focal length. The Auto Slowest Shutter Speed setting my be varied ±2 stops slower or faster than the lens' focal length. Image Sizes Cropped Sizes The A9 automatically crops the full-frame down to APS-C if you mount an APS-C lens, or you can set this manually (MENU > Camera 1 > page 1/13 > APS-C/Super 35mm > ON), and either of these 1.5:1 formats may also be set to a 16:9 crop. On Left: Ethernet (WLAN for FTP connections). PC (Prontor-Compur) flash sync. On Right: 3.5mm microphone jack with plug-in power. 3.5mm headphone jack. Micro-D HDMI. The HDMI output supports 3,840 x 2,160 (25p), 1,920 x 1,080 (50p, 50i, 24p, 60p, 60i and 3,840 x 2,160 at 30p and 24p. YCbCr 4:2:2 8-bit and RGB 8-bit. Multi/Micro USB 2.0. On Top and Bottom: Hot shoe, which is also a Sony "Multi Interface" Shoe. Vertical Grip Connector (inside the battery chamber). WiFi IEEE 802.11 b/g/n Infrastructure mode 2.4 GHz. WEP, WPA-PSK and WPA2-PSK. Wi-Fi Protected Setup (WPS) or Manual setup. NFC NFC Forum Type 3 Tag compliant Bluetooth v4.1. 2.4 GHz. Model No. WW361847. Power & Battery Consumes about 4.1W (5.3W for video) using the finder and 3W (5.0W for movies) using the LCD. Sony NP-FZ100 rechargeable lithium ion battery included Magnesium alloy top cover, front cover, internal frame and rear cover. The grip area has been reinforced with magnesium alloy. Sony claims weather seals around most of the buttons and dials, but there are no seals on the card and connector covers.
As New Celestron C90 Mak Spotting Scope. Model#52268. Bought in Australia a few years ago. In excellent condition no damage no scratches. Comes with 2 eyepieces 20 & 32mm. and original carry bag. Tripod for illustration only. Pick up @ Jomtien, Soi16. More info here: https://www.celestron.com/products/c90-mak-spotting-scope#description Style: 32mm x 45° Configuration: Spotting scope Brand Celestron Eyepiece lens description Barlow Objective lens diameter 90 Millimeters Telescope mount description Altazimuth Mount Product dimensions 40.6D x 17.8W x 25.4H centimetres About this item Multi Coated Optics Maksutov-Cassegrain Optical Design Compact and Portable Design. To protect your spotting scope when not being used, put on all lens covers and caps to keep the optics clean and then put the scope in its backpack Erect Image System for Terrestrial and Astronomical Use Built-in T-Adapter threads for Ease of Adapting SLR Cameras. Comes with 32 mm Eyepiece, 45 Erect Image Diagonal and 8x21 Erect Image Finderscope. Backpack Made of Nylon.
Ultra Wide Angle Prime Lens. Made in Japan. Lens with two caps. S/n: last photo Fully tested in excellent working condition. EMS 50 baht, Cash on Delivery Available (COD เก็บเงินปลายทางได้) or meeting in North Pattaya. More photos and questions via Line ID: gnnick https://www.zeiss.com/content/dam/consumer-products/downloads/historical-products/photography/zm-lenses/en/datasheet-zeiss-zm-distagon-418mm-en.pdf From KenRockwell.com. : Ideal Uses Could be the only wide lens you need for your Leica. Like all Leica M lenses, Zeiss 18mm f/4 ZM works on every Leica M camera, as well as Minolta CLE , Voigtländers, Konica Hexar Ms and Zeiss Ikons. This Zeiss 18mm lens is perfect for use on any Leica. It's super-sharp, free from distortion and easy to shoot, especially with filters. It comes in silver or black and couples to the rangefinder of every Leica or similar rangefinder camera. When I finally got one of these in my hands, it's much, much nicer than I had expected. This Zeiss 18mm's optics are superb, and it takes normal 58mm filters. It's small enough so that there is very little blockage of the image in the 18mm finder, so it's easy to go shoot well. This Zeiss lens feels great in hand, just like Leica lenses. Focus and aperture rings turn with the same smoothness and precision I expect from Leica, and even better than Leica's cheap new Summarit-M lenses. By comparison, the new Leica 18mm f/3.8 ASPH is a dream lost. It's too big for practical use. The Leica 18mm is a poorer choice for photography because you have to use a special Leica 14 484 filter adapter to use filters, and then you have to use 77mm filters which will block your viewfinder. You can't compose well when you can't see what you're doing. Why bother? The Leica Man demands the Leica 18mm for his collection, but for actual photographers, the Zeiss 18mm is a better lens because it shoots better. I still need to have a shoot-out to compare optics; when I've had my hands on the Leica 18mm I wasn't at my optical test range. I'm unsure if the Leica will be as good optically as this Zeiss, but we'll see when I get a sample of the Leica 18mm with which to run a head-to-head shoot-out, hopefully in a few weeks. The Leica man doesn't trifle the price, and at any price, the Zeiss makes more sense for its superlative optics and superior usability. Photographers do consider price, and for them, this Zeiss costs less than half of the Leica 18mm. How does Zeiss make such a great lens so inexpensively? Efficiency. Zeiss puts its brilliance in the design, as Mozart and Beethoven put theirs in their scores, and Zeiss then has the performance (manufacture) done efficiently by Cosina in Japan for these consumer lenses. While Leica makes nothing optically more exotic than single-user camera lenses, survey equipment, instruments and scopes, Zeiss also makes enterprize-level optics used in cinematography, satellites and computer chip manufacturing. Zeiss Master Prime cine lenses, rented in Hollywood for $300 a day, sell for $20,000 - $25,000 each. The Zeiss lenses used in ASML steppers sell for close to seven figures each, and are made in the cleanest clean rooms in Germany. Leica doesn't even make medium-format lenses, as Zeiss has been doing for Hasselblad since forever. Whose lenses are used in spy satellites that can read the brand name off a golf ball — from space? Zeiss. What lenses did man take with him to record his most crowning achievement of all, the moon landings? Zeiss. Zeiss tests every single one of these lenses, including the 18mm ZM reviewed here, for MTF before it's sold to us. The MTF Zeiss specifies are actual tested, typical MTFs from actual lenses, not the pie-in-the-sky computed MTFs that other companies parade around but can't necessarily manufacture. With Zeiss, we the customers aren't paying for promotional cameras and lenses given away to celebrities every other month. Zeiss is unsurpassed, but Zeiss doesn't attract the religious extremists that Leica does to tell you about it. Zeiss calls this the Zeiss Distagon T* 4/18 ZM. "Distagon" is a trademark simply meaning "Zeiss retrofocus wide-angle lens;" it means nothing more specific about the design. T* is a brand name for Zeiss' excellent multicoating. ZM means it fits the eternal M series of Leica rangefinder cameras, as well as the Voigtländer Bessas, Zeiss Ikons and Minolta CLE . Ergonomics are perfect. The aperture flicks with a fingertip, and the settings are obvious by feel. Focus flicks with a fingertip, and it's easy to use two fingers for precise focus. The focus ring feels great. One fingertip is all it takes to flick it. Focus is very fast and sure. A small twist of the ring leads to a huge movement in the rangefinder. Focus is faster and less precise than Leica's standard. The focus ring goes from infinity to 0.5 meters in just 100,º which is almost twice as fast as most Leica lenses. There is no focus tab; just a knurled ring. You can use one or two fingers, unlike with Leica, where you have only the tab for focus The Zeiss 18 4 is made very well, much better than Leica's Summarit M lenses . Everything is tight, smooth and solid. Unlike AF lenses, this lens feels like one solid ball of metal. Nothing wiggles, vibrates or clatters. Filter Threads: Chromed metal. Barrel: Silver anodized aluminum. Focus Ring: Anodized aluminum with triangular ribbing. Focus Tab: None. Aperture Ring: Anodized aluminum. Focus Helicoids: Brass. Other Internals: Metal. Mount: Chromed brass. Mounting Index Dot: Blue plastic ball. Markings: Engraved and filled with paint. Made in: Japan. This Zeiss 18mm f/4 lens is sharp! It's sharp even at f/4, and even in the far corners of the full 35mm frame. The half-frame M8's corners are still in the middle of this lens' image. The only way to make this lens unsharp is to stop down too far, like f/22 if you don't need it, in which case diffraction limits performance as it does with every lens. The 10-bladed diaphragm begets sharp, 10-pointed sunstars . Panoramas, landscapes, architecture, photos with dominating foreground and wide background, photography in confined spaces is the profession of this lens. It offers excellent optical performance in a 100 degree diagonal field angle and its distortion is almost invisible. Despite its comfortable F4 maximum aperture the photographer will enjoy the compactness and light weight of the lens. A full metal barrel, 1/3 f-stops, a sophisticated operating concept mark it distinctively as a member of the Carl Zeiss ZM lens family. This lens still provides an astonishing wide angle effect even when used with digital rangefinder cameras. Because of its wide field angle and the need of an external viewfinder this lens is ideally combined with the Zeiss Ikon SW camera body. A versatile wide-angle prime designed for M-mount rangefinder cameras, the silver Distagon T* 18mm f/4 ZM Lens from ZEISS provides an immense 98° angle of view to suit photographing wide-open expanses or tight, narrow interior locations with dimensional fidelity. Employing a Distagon optical design, distortion is significantly reduced for a realistic portrayal of scenes and both brightness and sharpness are maintained from edge to edge and three anomalous partial dispersion glass elements are also used to help control chromatic aberrations and color fringing for improved clarity and color fidelity throughout the aperture range. A T* anti-reflective coating has been applied to individual lens elements to control flare and ghosting when working in strong lighting conditions for increased contrast and color neutrality. Additionally, the lens's manual focus design permits working with subjects as close as 1.6' away. Employing a Distagon optical concept, this lens delivers virtually distortion-free performance that pairs well with the broad angle of view. Three anomalous partial dispersion elements reduce chromatic aberrations and color fringing for improved color accuracy and clarity. Zeiss T* anti-reflective coatings have been applied to each lens surface to help minimize reflections in order to provide greater image clarity, contrast, and color fidelity. Manual focus design enables a minimum focusing distance of 1.6'.
The first and fastest of its kind. A best-sellermade even better. This large-aperture standard DSLR camera lens is in APS-C format, making it ideal for many different types of photographic expression. Made in Japan. Used. Fully tested in very good working condition. 100% workable. Lens with two caps. S/n: last photo. For Sony A-Mount cameras: Professional Full frame: α900 α99 α99 II α850 APS-C High-end: DG-7D α700 α77 α77 II Midrange: α65 α68 Upper-entry: α55 α57 α100 α550 α580 α58 DG-5D α500 α560 α450 Entry-level: α33 α35 α37 α350 α380 α390 α300 α330 α200 α230 α290 For Sony E-Mount cameras with adapter! Sigma 18-35mm F1.8 DC HSM | A Lens The first and fastest of its kind Truly a revolutionary product, the Sigma 18-35mm 1.8 DC HSM is the first wide-angle to standard zoom lens to achieve a large aperture of 1.8. Designed specifically for APS-C sized sensors, the Sigma 18-35mm 1.8 translates to 27mm-52.5mm on 35mm camera. Tapping into Sigma’s long history of lens innovations, the 18-35mm 1.8 DC HSM incorporates a wide glass molded aspherical lens with Special Low Dispersion (SLD) glass to compensate for aberrations and curvature at the widest angle. Internal focusing and zooming allows for more usability and functionality. The 18-35mm is ideal for landscapes, portraits, still life, snap shots, casual, and close-ups and the Hyper Sonic Motor (HSM) ensures smooth, fast and accurate autofocusing. The use of Thermally Composite Material (TSC) reduces size and weight but increases the lens durability. Its new Global Vision design works with its compatibility with the Sigma USB dock for further customization. A 9 blade rounded diaphragm also creates beautiful background blur. The Sigma 18-35mm 1.8 DC HSM is a new benchmark in photographic history and a must have for every camera bag. USB Dock Compatibility Sigma has developed special software (SIGMA Optimization Pro) that can update the lens firmware and adjust parameters such as focus. About Sigma Since 1961, and with the recent introduction of Sigma Global Vision, we have worked toward one single, simple goal: To hold ourselves to the highest standard of design & manufacturing of imaging products. Photography is all we do. And it’s all we’ve done. So you can rest assured that it’s something we know extensively and care deeply about. You have a vision. We’ve made it our mission. Distinguished by a uniquely fast and versatile design, the Sony A-mount Sigma 18-35mm f/1.8 DC HSM is an Art-series zoom, covering wide-angle to normal focal lengths. Separating itself from the pack, this zoom features an exceedingly bright f/1.8 constant maximum aperture, which suits its use in difficult lighting conditions and offers impressive depth of field control throughout the zoom range. The optical design incorporates a series of SLD and aspherical elements, which help to achieve high clarity and sharpness by suppressing various aberrations, color fringing, and distortion. A Super Multi-Layer Coating has also been applied, too, which controls lens flare and ghosting for improved contrast and color accuracy. Balancing the optical merits, this 18-35mm also sports an advanced Hyper Sonic Motor, along with an internal focusing design, to promote fast, quiet, and precise autofocus performance. As part of the Art line within Sigma's Global Vision series, this lens is designed to achieve truly notable optical performance and is ideally suited for creative and artistic applications. Wide-to-normal zoom is designed for APS-C-format Sony A-mount cameras and provides a 27-52.5mm equivalent focal length range. Impressively bright constant f/1.8 maximum aperture is well-suited for working in low-light conditions and also provides greater control over the focus position when using shallow depth of field techniques. Five Special Low Dispersion (SLD) elements are featured in the optical design and help to reduce color fringing and chromatic aberrations for improved clarity and color accuracy. Four aspherical elements are used to help limit distortion and spherical aberrations and also contribute to greater overall sharpness and accurate rendering. A Super Multi-Layer Coating has been applied to lens elements in order to minimize lens flare and ghosting and contribute to producing contrast-rich and color-neutral imagery, even in backlit conditions. Integrated HSM (Hyper Sonic Motor), along with an internal focusing system, realizes quick and quiet autofocus, which is further complemented by an optimized AF algorithm to produce smoother focusing performance. The HSM also permits full-time manual focus control simply by rotating the focus ring at any time. Rounded nine-blade diaphragm contributes to a smooth and pleasing bokeh quality. Constructed using a Thermally Stable Composite (TSC) material for greater precision and use in wide temperature variations. Additionally, a brass bayonet affords improved mounting accuracy and rigidity.