Maximale Blende: f/2,8 Brennweite: 50-150 mm Produktart: Zoomobjektiv Kompatible Filtergröße: 67 mm Rechtliche Informationen des Verkäufers Foto Wolff Inh. Axel Wolff Axel Wolff Duisburger Str. 98 46535 Dinslaken Germany Kontaktinformationen anzeigen Bei Neuware und Demoware wird die Mehrwertsteuer von 19% auf der Rechnung separat ausgewiesen. Sigma 50-150mm F2.8 EX DC APO OS HSM - resumen de datos, precios y opiniones. Compara con objetivos similares. Portada ; Contenidos . Artículos Fotográficos 559 € Sigma 50-150mm F2.8 EX DC HSM APO Sigma 50-150mm F2.8 EX DC HSM APO zoom tele para Canon, Nikon, Sigma (APS‑C) focal: 50-150mm. Modelo 150MM Tipo D-SLR Compatibilidade CANON Garantia 3 Anos Outras Caraterísticas 150MM/2.8 EX DG APO OS HSM MACRO Marca SIGMA. D-SLR | CANON | 50-100MM/1.8 (A) DC HSM. É necessário iniciar sessão com a sua conta para adicionar este produto aos seus favoritos. Se ainda não tem uma conta RP, crie a sua em apenas alguns minutos 喺 Hong Kong,Hong Kong買 Sigma 70-200mm F2.8 APO EX DG OS (Canon mount) 不議價!. SIGMA 17-50mm F2.8 EX DC OS HSM for NIKON F 17-50 mm 超新淨 大光圈 廣角變焦 產品型號：Sigma 150mm F2.8 APO MACRO DG HSM For Nikon 產品狀況：95%New 配件：底面蓋 遮光罩 售價：HKD$2580 (歡迎二手Trade in) 全新貨品 Sigma 50-150Mm F2.8 Ex Apo Dc Hsm Ii Nik . Visita lo Store di Sigma. 4,2 su 5 stelle 11 voti. Non disponibile. Non sappiamo se o quando l'articolo sarà di nuovo disponibile. Marchio: Sigma: Sigma 5,0-6,3/150-600 DG OS HSM Contemporary CANON. 4,7 su 5 stelle Vay Tiền Online Chuyển Khoản Ngay. Large aperture telephoto macro lens incorporates Sigma's original Optical Stabilizer function. Specifications APO MACRO 150mm EX DG OS HSM Lens Construction SLD glass Lens Construction Number of Diaphragm Blades 9 Blades Rounded diaphragm Minimum Aperture Minimum Focusing Distance Maximum Magnification Ratio Filter size Dimensions Diameter × Length ⌀ / Supplied Accessories LENS CASE, LENS HOOD LH780-05, HOOD ADAPTER HA780-01, TRIPOD SOCKET TS-21 Corresponding AF Mounts / Barcode No. SIGMA SA-Mount 00-85126-10656-0 Canon EF Mount 00-85126-10654-6 Nikon F Mount 00-85126-10655-3 Sony A-Mount 00-85126-10662-1 Product Lineup APO MACRO 150mm EX DG OS HSM Support APO MACRO 150mm EX DG OS HSM Sigma APO 50-150mm EX DC OS HSMSigma APO 50-150mm EX DC OS HSMPor que Sigma APO 50-150mm EX DC OS HSM é melhor que a média?Abertura máxima na distância focal máxima? focal máxima? de abertura? óptico? cromática? mínimo de visão? de usuáriosInformações geraisO dispositivo tem proteção adicional para evitar falhas causadas por poeira, pingos de chuva e respingos de conector de metal costuma ser superior a um conector de plástico, pois é mais que um peso mais baixo é melhor, já que aparelhos mais leves são mais confortáveis de manusear. Isso também é uma vantagem para eletrodomésticos, pois facilita o transporte, e para muitos outros tipos de elemento frontal não roda. Isto é importante se você usar filtros, por exemplo filtros polarizadores e gradientes têm de ser orientados de uma certa com uma capa de lente para que não tenha de a comprar separadamente. Estas são usadas para bloquear fontes de luz forte da lente, como a luz do sol por exemplo, para prevenir brilhos e reflexos da capa da lente pode ser atarrachada na lente no sentido inverso para que possa mantê-la sempre na câmera, pronta a medida é importante a ser levada em conta na compra de maior distância focal máxima permite que você foque em apenas uma pequena parte do enquadramento, e oferece um ângulo de visão mais estreito que as distâncias focais mais distância focal mínima mais curta permite que você obtenha mais da cena na foto, e oferece um ângulo de visão mais amplo que as distâncias focais mais estabilização óptica de imagem utiliza sensores giroscópicos para detectar vibrações da câmera. A lente ajusta o percurso óptico de acordo com o resultado, garantindo que qualquer tipo de "motion blur" - ou mancha de movimento - seja corrigido antes do sensor capturar a menor lado da lente oferece o ângulo de visão mais amplo. Isto permite que você integre mais elementos de cena em uma fotografia baseado no formato APS-C.Na parte mais longa da lente você tem o ângulo de visão mais estreito. Isto permite-lhe apanhar uma pequena parte da cena na fotografia da mesma maneira quando faz zoom em algo baseado no formato APS-C.Uma verdadeira lente macro tem uma ampliação de 11. Isto significa que a imagem produzida é uma representação em tamanho real do objeto faixa de zoom é a razão entre os comprimentos mais longos e menor focais. A faixa de zoom mais elevado significa que a lente é mais uma maior abertura de diafragma, o sensor pode captar mais luz e ajudar a evitar imagens fora de foco, acionando maior velocidade de obturação. Isso também gera uma menor profundidade de campo, permitindo que as imagens em segundo plano sejam desfocadas e trazendo, assim, maior foco ao objeto uma abertura de diafragma mais ampla, o sensor pode captar mais luminosidade, ajudando, com maior velocidade de obturação, a evitar imagens desfocadas. Isso também cria uma baixa profundidade de campo, permitindo que você desfoque o segundo plano e foque no objeto ao número de lâminas de abertura, as lâminas arredondadas afectam a maneira como a luz entra no sensor. As lâminas arredondadas, normalmente encontradas em lentes mais caras, melhoram a aparência das áreas desfocadas. Isto permite-lhe obter um melhor e mais suave efeito bokeh nas suas abertura controla a quantidade de luz que chega ao sensor da câmera. Mais lâminas costumam indicar uma lente de melhor qualidade. Isso também permite obter melhor aspecto visual em efeitos - como o efeito "bokeh" - ao desfocar o plano de fundo, enquanto uma lente com menos lâminas costuma produzir efeitos "bokeh" mais duros e abertura menor reduz a quantidade de luz que alcança o sensor. Isso é importante em condições de claridade, em que uma abertura mais ampla poderia resultar em superexposição de imagem. Outra vantagem é que, com uma abertura menor, é possível obter maior profundidade de campo e manter toda a imagem em abertura menor reduz a quantidade de luz que alcança o sensor. Isso é importante em situações de claridade, quando que uma abertura maior poderia resultar em superexposição da imagem. Outra vantagem é que, com uma abertura menor, é possível obter maior profundidade de campo e manter toda a imagem em lentes permitem fazer foco infinito. Isso é essencial quando você quer tirar fotos que incluam objetos muito distantes, como paisagens, de modo que tudo esteja nítido e em com um motor de foco embutido podem fazer focos automáticos mesmo que a câmera não tenha o seu próprio motor de o foco manual em tempo integral, é possível mover o anel de foco enquanto estiver no modo AF foco automático. Isso significa que você pode fazer ajustes manuais sem que seja necessário alterar para o modo com motor de foco embutido focam mais rápido e silenciosamente que as lentes sem motor de foco que apenas podem utilizar o motor de foco do corpo da é a menor distância em que a lente pode focar. Uma menor distância focal mínima permite chegar mais perto do objeto fotografado, o que é especialmente importante quando se faz resultado da nítidez da medição da DxOMark. Este resultado é baseado na medição do MTF modulation transfer function, e dá uma indicação geral da nitídez da imagem produzida pela lente. Testado com a Nikon D7000 ou Canon 7D. Fonte resultado da distorção cromática lateral da medição da DxOMark. A distorção cromática é um tipo de distorção que resulta na disperção de cor ao longo das bordas da imagem. Testado com a Nikon D7000 ou Canon 7D. Fonte é uma série de testes que medem o desempenho e a qualidade de lentes e câmeras. O resultado DxOMark é a pontuação geral atribuída à lente. Testada com Nikon D7000 ou Canon 7D. Fonte resultado da distorção da medição da DxOMark. A distorção na lente refere-se à variação da magnificação ao longo da imagem. Mais distorção irá resultar na gravação incorrecta de linhas rectas na imagem. Testado com a Nikon D7000 ou Canon 7D. Fonte resultado de transmissão da medição da DxOMark. A transmissão refere-se à quantidade de luz que chega ao sensor através de todos os elementos de vidro de uma lente, com um TStop mais baixo a significar mais luz. Isto é importante visto que menos luz a alcançar o sensor pode requirir ISOs maiores ou velocidades de obturador mais lentas. Testado com a Nikon D7000 ou Canon 7D. Fonte resultado dos efeitos de vinheta da medição da DxOMark. Os efeitos de vinheta referem-se a quando o brilho de uma imagem muda a partir do centro para as bordas resultando em cantos escurecidos. O resultado de 0 é perfeito e a imagem não terá efeitos de vinheta. Testado com a Nikon D7000 ou Canon 7D. Fonte FE 70-200mm f/ GM OSS IITamron SP 90mm F2__8 Di Macro 11 VC USDSony FE 55mm F1__8 ZA Carl Zeiss Sonnar T*Canon EF 85mm f/1__4L IS USMTamron SP 85mm F1__8 Di VC USDNikon AF-S Nikkor 105mm F1__4E EDCanon EF 70-200mm f/4L IS II USMCanon EF 70-200mm F/2__8L IS II USMSony FE 100-400mm f/4__5-5__6 GM OSSExibir tudo SLRgear Review December 4, 2012by Andrew Alexander The Sigma 50-150mm ƒ/ EX DC OS HSM APO started to hit store shelves in April of 2012, an update to the previous non-optically stabilized version which has seen a few revisions, and has now been discontinued. The Sigma 50-150mm ƒ/ OS was designed to fit the APS-C sized sensor of digital camera bodies hence its "DC" designation using it on a full-frame camera will result in vignetting on the sides of the captured image. It features a maximum aperture of ƒ/ regardless of the focal length chosen. On a Canon body, the 50-150mm lens provides an effective field of view of 80-240mm; on other bodies, the effective field of view is 75-225mm. The lens is available now in Canon, Nikon, Sigma, Pentax and Sony mounts, ships with a tripod mount and petal-shaped lens hood, and retails from around $1,100. Image stabilization testing now added! Sharpness The Sigma 50-150mm ƒ/ OS is quite simply one of the sharpest zoom lenses we have had the opportunity to test. Even used wide open at ƒ/ the lens provides tack-sharp images, from 50mm to 150mm. Stopping down the lens provides practically insignificant improvements in image sharpness this lens is just excellent at every setting. Diffraction limiting sets in at ƒ/11, but there is very little practical impact on image sharpness until ƒ/16, and more significantly when fully stopped down at ƒ/22. Chromatic Aberration There's no such thing as a free lunch, and if there is any problem with the Sigma 50-150mm ƒ/ OS, it would be the presence of chromatic aberration. It's not surprising to see; there are 21 pieces of glass between your subject and the sensor, and fortunately, it's not overly present in images. Chromatic aberration shows up in images made with this lens in the form of magenta-green fringing in areas of high contrast, predominantly in the extreme corners of the image. If you would seek to avoid any trace of CA, shoot at 100mm where it is lowest. Shading ''Vignetting'' The only point where there is any real shading of the corners is when the lens is being used at ƒ/ In this case we see corners which are 2/3 of a stop darker than the center, when the lens is used at 150mm; at other focal lengths at ƒ/ the corners are around a half-stop darker than the center. At other focal lengths and apertures, corner shading isn't really a problem. Distortion Distortion is kept remarkably low for a zoom lens there is some light barrel distortion when the lens is used between 50-70mm + and very light pincushion distortion when the lens is used between 100-150mm There is a nice sweet spot of parity at the 80mm mark where distortion is negligible. Autofocus Operation Built with Sigma's HSM specification, focus is conducted hypersonically, meaning it is very fast and virtually silent the lens took less than a second to go from close-focus to infinity. If you're using a compatible body, that is if your SLR body doesn't support HSM, it won't autofocus at all. Autofocus results can be adjusted at any time by just turning the focus ring, and attached 77mm filters will not rotate. Macro The Sigma 50-150mm ƒ/ OS HSM isn't a great macro lens its close-focusing distance is 80cm 31 1/2 in. and its magnification ratio is Build Quality and Handling The Sigma 50-150mm ƒ/ OS HSM is a solid lens, well-built with a metal lens mount. The lens finish is Sigma's standard matte black with a slightly rubberized texture. The filter ring is a hard plastic, and accepts 77mm filters that won't rotate during focusing or zooming. The lens sports a few higher-quality features, such as a recessed distance scale covered by a glass plate, internal focusing and a nine-bladed diaphragm. Sigma has done some impressive work under the hood, with 21 lens elements in 15 groups, including 6 SLD lens elements. There are two switches of note one to enable or disable autofocus, and one to enable or disable optical image stabilization. There are two optical stabilization modes available to be enabled. The design of the lens might take some getting used to for some the focus ring comes first, and then the zoom ring closer to the filter end of the lens. The focus ring is quite small, just 7/8'' wide with raised rubber ribs. The ring has about 120 degrees of turning action and ends in soft stops the focus ring will keep turning, but an increase in resistance lets you know that you have reached the end. The zoom ring is the larger of the two, quite wide at 1 3/4'' and composed with larger raised rubber ribs. The zoom ring has a throw of around 90 degrees zoom creep is not a factor with this lens, as it uses internal focusing and thus, the length of the lens does not change with zooming or focusing. The zoom ring is nicely finished, and offers a good level of resistance when turning it takes around two fingers to turn the ring. The lens ships with a petal-shaped lens hood with the designation of LH850-02 589. This hood is quite large, adding 4 inches to the overall length of the lens when mounted. The hood does reverse and connect to the bayonet mount of the lens, for easy storage. The interior is ribbed to help cut down on flare. Also shipping with the lens is a removable tripod mount which turns very nicely however, it doesn't have 90-degree click stops as other manufacturers provide. Alternatives Sigma 50-150mm ƒ/ II EX DC HSM APO ~$n/aSigma provided the only dedicated competition for this type of zoom lens, and it took itself out of the running by discontinuing the predecessor lens. There's been a dramatic improvement in the newer version of the 50-150mm, pretty much across the board the new lens is much sharper, chromatic aberration has been improved at the telephoto end, and there is much less distortion. Add on optical image stabilization, and there is every reason to upgrade. Canon EF 70-200mm ƒ/ IS II USM ~$2,100Canon doesn't provide a 70-200mm experience for its EF-S mount cameras, so to stay brand loyal you'll have to buy the flagship lens and live with an effective field of view of 112-320mm. Performance is on par with the Sigma which is something to raise eyebrows over with perhaps better results when it comes to chromatic aberration. Nikon 70-200mm ƒ/ ED VR II AF-S ~$2,400Nikon also does not produce something in the 50-150mm range, so again, for the field of view, you'll have to get the flagship. Performance is on par with the Sigma, though significantly better when it comes to chromatic aberration, corner shading and distortion. Pentax 50-135mm ƒ/ ED AL IF SDM SMC DA* ~$1,500Of all the mount choices, Pentax is the only one that offers a lens in the same category as the Sigma, but we have not yet tested it. Sony 70-200mm ƒ/ G ~$2,000Sony also does not offer something in the 50-150mm range, so you will have to buy its version of the popular 70-200mm range. We were not blown away by images shot at ƒ/ with this lens, especially at the 200mm end, so we see little incentive to spend twice as much as the Sigma. Conclusion Sigma has a habit of identifying shortcomings in the lens offerings by other camera manufacturers and exploiting them in 2006, with the introduction of the first 50-150mm ƒ/ DC, it managed a coup, offering a 70-200mm experience for the APS-C camera. Sigma has certainly managed to improve on the initial and subsequent redesign of that lens, in the current optically-stabilized implementation. It's one of the sharpest telephoto zoom lenses we have ever tested, and should warrant serious consideration by photographers shooting with APS-C sensor-basd cameras. Not only will you have a significant amount of money, but you will make some great photographs, too. Product Photos Sample Photos The VFA target should give you a good idea of sharpness in the center and corners, as well as some idea of the extent of barrel or pincushion distortion and chromatic aberration, while the Still Life subject may help in judging contrast and color. We shoot both images using the default JPEG settings and manual white balance of our test bodies, so the images should be quite consistent from lens to lens. As appropriate, we shoot these with both full-frame and sub-frame bodies, at a range of focal lengths, and at both maximum aperture and ƒ/8. For the ''VFA'' target the viewfinder accuracy target from Imaging Resource, we also provide sample crops from the center and upper-left corner of each shot, so you can quickly get a sense of relative sharpness, without having to download and inspect the full-res images. To avoid space limitations with the layout of our review pages, indexes to the test shots launch in separate windows. Sigma 50-150mm f/ EX DC OS HSM APO Sigma 50-150mm f/ EX DC OS HSM APO User Reviews average of 3 reviews Build Quality Image Quality 9 out of 10 points and recommended by Kdavis 4 reviews Good length, DX formated, Good quality Heavy This is not a bad lens and I love the 50-150mm range....unless you desire a bit more reach.......so I found a very good used copy of a Nikokn 80-200 AF two ring and boy do I love it. To compare the two I give a slight edge to the Nikon for image quality and build quality but I'm not going to knock the Sigma at all. It's a good lens albeit heavy thanks to the HSM motor and it has OS as well. I'm happy to have both although the Sigma is for sale on Amazon currently.....for the moment anyway. I listed it once before and removed it cause I hated to part with it and before the ink dries on this review, I'll probably remove it again. Get this lens if you want it for your DX camera. You won't be dissapointed. reviewed August 12th, 2014 purchased for $1,009 8 out of 10 points and recommended by S8472 1 reviews Sharp wide open! Fast AF and effective OS Weight, not weather sealed, shorter focal length at close focus This lens at least my copy lives up to the excellent measurement results on this site. Sharpness is very impressive, it's sharp everywhere. Right from over the zoom range. There is only one caveat the effective focal length becomes significantly shorter with closer subjects. At closes focus 80cm it's a 50-100mm. Being a lens in the portrait range focus around 3m / 10ft it is not a 50-150 but somewhere between a 50-120 and a 50-135. I found that when I made some test pics to compare sharpness with my old Canon 70-200 f4L. reviewed April 27th, 2013 0 out of 10 points and recommended by deltadave44 1 reviews won't be released for sony/pentax shooters here's the quote from an email i received from sigma..." Unfortunately at this time there are no plans to release that lens in Sony mount. I have had other inquiries into this in the past and have asked the parent company as recently as 2 weeks ago. But they continue to tell me that the lens will not be available in Sony or Pentax. I hope one day that changes, but I honestly don’t see that happening. I apologize for any inconvenience this causes.' reviewed March 20th, 2013 0 out of 10 points and recommended by turps 1 reviews Your review states that this new version of the Sigma 50-150 is available now for Sony and Pentax mounts - but the Sigma website lists only Canon, Nikon and Sigma. I would like to get this lens for my Sony A550.... reviewed December 17th, 2012 9 out of 10 points and recommended by buddywoods 1 reviews Wide aperture, sharp, good range for a crop sensor heavy, not water sealed I have a Canon 70-200 f/4L IS but found it to be a little long on my 7D for indoor portraits in my basement so I bought this lens. This lens focus is accurate and pretty fast. I found this lens to be as sharp as my Canon 70-200 f/4L IS. reviewed May 5th, 2012 purchased for $1,099 SIGMA - SIGMA 12-24mm F4 DG HSM ニコン用 - by , 2023-05-28 軽量で使いやすく大変良い商品です。新機種のGF10Wと比較検討をしましたがSDカードの記録枚数の違いだけで、まったく遜色がなくこちらに決めました。 SIGMA - SIGMA 100-400mm DG DN OS sony用 - by evris, 2023-04-27 手持ちのカメラの調子が悪く、修理に出しても中々直らずな為、買換えしようと思い、EOS Kiss Mのホワイトが可愛いと思ったので欲しかったのですが、新品のレンズ付きは高額な為、中古でもいいので、安いのがないかと探しましたら、こちらで見つけました。 中古ですが、綺麗ですし、一色揃っていますし、さっそく撮影を夜にして見ましたが、フラッシュ無しでも綺麗に写りました。 今までコンデジでしたので、少し重い感じですが、この位なら持ち歩きでも良いと思います。 SIGMA - SIGMA 24-70mm Art sonyE - by yuzo358, 2023-05-26 女性にとって、重さも使いやすさも抜群、とても良いです。 SIGMA - 【銘玉中古】SIGMA 18-35mm DC HSMおまけ多数！ - by dolce6jp, 2023-04-13 SONYα6400です。色々探してこれに決めました。少し高いけど、裏地がかわいいし生地はしっかりしていて良かったです！ SIGMA - シグマ150-600ｍｍ DG OS HSM Contemporaryキャノン用 - by ヤスプレ, 2023-05-24 商品に特に不満はない。ショップレビューだけはダメなんか？ SIGMA - SIGMA 100-400mm DG OS HSM キヤノン用 - by chiki2monster, 2023-03-30 状態もよく、性能も予想通りで満足です。 運動会でもさっそく大活躍しました！ SIGMA - 【新品未使用】シグマ 28-70mm DG DN Lマウント用 - by Woori Lena, 2023-05-22 バレンタインに彼氏にプレゼントしました😳 私はα6500を持っていますが操作性に不便を感じることもなく、デザインも安っぽくなく、コスパがとってもいい商品だと思います。 何より軽い笑 この軽さならどこへでも、いつでもお供させられます笑 SIGMA - モモ 新同品 SIGMA 28-70mm DG DN - by のぞビール, 2023-03-16 オリンパスのサイトで色々と機種を比較してみました。最上位機種が防滴性能や拡張機能が充実しているのは当然です。しかしこちらの商品は、フラッグシップ機と比べ画素や拡張機能が違うと言うだで、画像処理エンジン等は同じであるようなので、こちらを購入することにしました。見た目も上位機種と遜色が無い良い質感です。気軽にガシガシ使っていきたいと思っています。 SIGMA - mopera SIGMAカメラレンズ - by ねここ０３２８, 2023-05-20 35年ぶりにカメラを始めようと思い購入 デジタルの波に乗れていない私にも 使いやすいカメラです ドンドン撮っていきたいと思います SIGMA - SIGMA 50-100mm DC HSM Art A016中古 - by ピコちゃん3108, 2023-03-02 とても安くて良いものが購入できました。１世代前の機種ですが、十分実用できて満足です。画像も綺麗でコンパクトなのが良い。交換望遠ズームも画像が十分綺麗。 SIGMA - SIGMA 50-100mm DC NIKON用 - by チェリー3853, 2023-05-18 初心者でも、思っていたような写真が取れます。 SIGMA - SIGMA 28-70mm DG DN Lマウント - by yumi0333, 2023-06-01 型落ち狙いで新品購入。12‐ 丁寧に梱包されて、さすがマップさん♪また、利用します。 SIGMA - SIGMA C 150-600mm DG OS HSM シグマ - by appletea12, 2023-05-25 キャッシュレスで5%還元もあり、さらに安く購入ができ、大変よかったです。 動作は問題ありませんでした。 良い買い物でした。 SIGMA - SIGMA 望遠ズームレンズ APO 70-200mm キャノン用フル - by こな1204, 2023-05-30 カメラのデザインはシンプルで、黒と悩みましたがシルバーにして良かったです！とても良い商品です。 SIGMA - 【美品】シグマ 24-105mm F4 DG OS HSM Art キヤノン用 - by moirai, 2023-05-11 届くのも早くて必要なものが全て揃ってて大満足でした！画面の保護フィルムがフリーサイズだったので切らないといけないのが少し難しくて使えていませんが、それ以外はとってもよかったです！ SIGMA - 超美品 SIGMA APO 70-200mm EX DG OS HSM - by ザィォン, 2023-05-28 増税前にお安く購入できたので嬉しいです。機械のことはよくわからないので家族任せですが、運動会などカメラ撮影できるようになったので、画質が楽しみです。 Verdict Key Specifications Review Price £950 Sigma’s new 50-150mm is designed for use on an APS-C DSLR, delivering a 35mm focal length equivalent of 75-225mm on a DSLR with a crop factor, providing a short to medium telephoto range with a fast maximum aperture of f/ Designing a zoom of such proportions for comfortable use can be tricky and Sigma’s engineers clearly envisage that this lens will be used with its removable tripod collar attached as this provides a comfortable platform when supporting the lens in the hand. The manual-focusing ring is forward of the collar but is slightly too close for easy reach; the more distant and much broader zoom ring, on the other hand, is perfectly placed and offers just the right amount of resistance. There is a focused-distance window behind the focusing ring, beneath which sits a pair of sliders to set the focusing mode and to control the Optical Stabilisation system. Both focusing and zooming are fully internal, with no disturbance of the manual-focusing ring and without any extension or rotation of the lens barrel. Using the lens without its tripod collar means taking a slightly more rearward grip, to maintain balance, and brings the manual-focusing ring to finger-tip touch but makes the zoom ring a shade too far forward for easy reach. The six SLD Super Low Dispersion elements that are used to provide apochromatic correction do a reasonable job but there are traces of colour fringing at both ends of the zoom range. MTF testing at three focal-length settings produced three separate curves the results at 50mm were very good; at 85mm they were excellent; at 150mm the figures dropped and the lens was a little weak at wide apertures. Out in the field the size and weight of this lens can become burdensome ‚Äì but no more so than the full-frame 70-200mm equivalent. The padded carrying case is a welcome inclusion that provides excellent protection and a constant home for the lens hood if it is detached from the zoom. Needless to say, the tripod collar is a huge advantage in terms of balancing the lens-and-camera for use on either tripods or monopods. When treated as the APS-C equivalent of a full-frame 70-200mm f/ lens, the 50-150mm zoom looks very attractive but its maximum aperture is in fact one F-stop behind that of the full-frame version. Verdict The 50-150mm zoom is a useful lens in its own right. It would be nice if it were slightly smaller and lighter as it’s noticeably larger than its predecessor. It’s actually almost identical in size to the 70-200mm f/ from Sigma, but as it stands it feels robust and durable. The AF system generally performed well but occasionally hunted at 150mm. That, and minor colour fringing, aside this is a very capable and feature-packed lens that is bound to appeal to a lot of APS-C DSLR owners. Trusted Score

sigma 50 150mm f2 8 ex dc apo os hsm