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We have found that the SIGMA 30mm F1.4 DC DN | Contemporary in MFT mount does not properly correct distortion during JPEG shooting.* For RAW images, it is possible to correct distortion by using the adjustment functions in compatible software.Currently, we are working on the necessary actions and updating the firmware of the lens.We are going to make a further announcement when the firmware update for the lens is ready via either the camera body or software.
- In the camera setting, select “Auto” in the distortion compensation from the lens compensation menu.- If the camera does not incorporate the lens compensation function, the lens cannot offer distortion compensation.
Juste une question : Combien de distorsion ?
The Sigma 30mm F1.4 DC DN C lens offers quite an unusual standard focal length of 45mm for APS-C compact system cameras and a slightly longer 60mm for Micro Four Thirds cameras. It offers acceptable sharpness wide-open at f/1.4 (at least in the centre), good build quality, nice bokeh and fast and quiet auto-focusing, all at a very affordable price.The Sigma 30mm F1.4 DC DN C is tack-sharp in the centre from f/2 onwards, although you need to stop down to f/4 to get acceptable results at the edges of the frame. Disappointingly the lens does suffer from obvious chromatic aberrations when shooting wide-open at f/1.4, along with some vignetting, although stopping down to f/2 almost completely removes the purple and green fringing that is so prevalent at f/1.4.Build quality is very good, with the brass lens mount and sober all-black design adding to the high-quality feel, and Sigma have even generously included a very good circular lens hood. The auto-focusing system proved to be pretty quick and reliable on the Sony A7R II that we tested the lens with, and manual focus override at any time is a great feature.The modest asking price of the Sigma 30mm F1.4 DC DN C is very reasonable indeed for such a fast, well-built lens. We do have some concerns about the image quality, particularly when shooting at that headline-grabbing f/1.4 maximum aperture, but overall the Sigma 30mm F1.4 DC DN C is well worth considering.
Mise en garde de Sigma pour les utilisateurs en monture µ4/3 :https://www.sigma-photo.co.jp/english/new/new_topic.php?id=574Précision pour les utilisateurs en monture Sony E :
Au final, nous n'avons pas grand-chose à reprocher à cette nouvelle focale fixe conçue pour les hybrides Sony (APS-C) ou Micro 4/3 ; elle reçoit donc naturellement son label recommandé. Excellente prise en main, qualité de construction, très grande ouverture, qualité optique (surtout entre f/2,8 et f/5,6) : la check list est complète.Équivalent à un 45 mm (APS-C) ou 60 mm (Micro 4/3), cette focale est relativement bien adaptée au reportage (bien qu'un peu longue) et au portrait (bien qu'un peu courte). C'est donc un entre-deux qui faudra apprivoiser. Sa très grande ouverture de f/1,4 lui confère une belle polyvalence, aussi bien en prise de vue dans de faibles conditions lumineuses que pour réaliser de beaux effets de bokeh.
When you compare the results achieved by the Sigma C 30 mm f/1.4 DC DN and the Panaleica DG Summilux 25 mm f/1.4 ASPH. it seems the Panasonic company chose the wrong address. Instead of luring customers with a logo of a fading legend they would have fared much better if they had struck a deal with Sigma; their lenses would be better and cheaper. The comparison of prices is especially painful for Panasonic. Currently (June 2016) you have to pay as much as 1599 PLN for the Sigma whereas the Panaleica costs about 2300 PLN. Keep in mind the fact that the Sigma enjoys a novelty status on the market – if the Panaleica was at its place, its price tag would be even several hundred PLN higher.Will the Sigma get even cheaper after a time? Perhaps a bit but to be honest there are no reasons whatsoever to lower its price. If you look at the Micro 4/3 system’s line-up it is actually the best lens in its class available on the market.
With the 30mm F1.4 DC DN Contemporary, Sigma has produced a real winner. They've made a sharper and brighter autofocus lens than anything available in the APS-C E-mount lineup. Not only that, but they've also eliminated any major penalties there used to be with using a third-party lens on E-mount cameras.All this has been achieved while costing less than the 35 F1.8 OSS, and in fact many APS-C F1.4 primes for other systems. There is a slight cost in terms of distortion, but the high amount of sharpness means images should be more tolerant of correction.The result is a lens that deserves no less than the highest praise. It is a relatively lightweight F1.4 prime for low light needs and producing shallow depth of field, and makes an excellent lens for street shooting, or anywhere else a photographer might typically use a 50mm lens (or in this case 50mm equiv.). A beginner wanting to replace or augment their kit zoom with a decent walk-around prime should definitely consider the Sigma 30mm F1.4 DC DN | C and learn how to 'zoom with your feet.' Seasoned photographers will love the amount of quality packed in to its size, and will find the 45mm equiv. field of view is as functional and versatile and creative as the classic 50mm field-of-view is.
Perhaps now we should describe the Sigma 30mm f/1.4 lens as a wolf in sheep's clothing, as its unassuming exterior houses a superb compact lens that really delivers the goods. Even without considering the price, the lens is an absolute gem. The modest price tag is a wonderful bonus.
Je suis un peu perdu, quelle est la différence entre le 1,4 DC DN Contemporary et le 1,4 DC Art ?
https://www.dpreview.com/reviews/sigma-30mm-f1-4-dc-dn-contemporary-micro-four-thirds-lens-reviewUn test comparatif sur DPR entre le Sigm et le Pana 25 mm f1.4Pierre
While the Sigma 30mm F1.4 DC DN | C was a breath of fresh air in the rather sparse E-mount environment, it faces much tougher competition from the Panasonic Leica DG Summilux 25mm F1.4 ASPH. The Sigma ends up coming close or matching the Panasonic in several parameters, even though it is slightly behind in center sharpness. For a lens that costs less than its competitor, it is a solid performance. Its slightly uncommon focal length might not be for everyone, although its bright aperture makes it very usable for portraits. Unlike the APS-C version which undoubtedly sits atop the E-mount range as one of the sharpest lenses available, the Micro Four Thirds version falls behind lenses available in that mount's more diverse lens selection. That said, offering a large portion of the performance of a more expensive lens for less price earns the Sigma a respectable Silver Award.
It is identified that the SIGMA 30mm F1.4 DC DN | Contemporary for Micro Four Thirds mount does not properly offer the C-AF function when it is attached with the camera OM-D E-M1 Mark II, which was released by OLYMPUS on December in 2016. By updating the lens firmware, it is expected to be compatible and your patience in this will be highly appreciated.(...)【What is identified】The lens does not offer the C-AF function properly.* There is no problem with S-AF and MF functions.【Plan for support】It is expected that the lens firmware update will be available by the end of January in 2017. Once it becomes ready, we are going to make an announcement on it on the webpage.
[30mm F1.4 DC DN | Contemporary 016 Firmware Version 1.2]- It has corrected the phenomenon that the lens does not offer the C-AF function properly, when used with OLYMPUS OM-D E-M1 Mark II
【Benefits of this firmware update】・It has improved the peripheral brightness correction, when aperture value F1.7 is selected in the Sony a6300 camera.・It has corrected the phenomenon that the AF operation of focus points in peripheral areas stops very occasionally with the Sony a6300 camera.・It has corrected the phenomenon that the "Touch Focus" function in the Sony a5100 camera does not operate properly and freeze the camera.
Au vu des très bons tests/revues sur cet objectif (pour certains c'est l'objectif offrant le meilleur piqué dans la gamme E pour APSC), j'ai voulu voir si le gain en piqué donnerait un rendu intéressant / flagrant par rapport à mon 16-50 de base, sur Sony Nex 6. Je l'ai donc acheté.Les premiers essais ne sont pas enthousiasmants, on devine que le 30 est un poil meilleur mais ça ne saute pas franchement aux yeux. En visualisation à 100%, si à F5 le 30 parait supérieur au 16-50, à F8 la différence est quasi imperceptible.En visualisation plein écran (24 pouces) je ne perçois aucune différence franche.Un exemple ci-dessous : crop à 100% de photos faites sur pied à 100ISO. Le 16-50 à gauche, le 30 à droite, 1iere ligne à F5, 2ieme ligne à F8.
【Benefits of this firmware update】・Improved AF performance when the “Eye AF” function is selected.・Improved AF performance in the peripheral areas in the image, when the “Lock on AF” function is selected.・Improved feeling of the MF operation of the lens.
Le PDG de Sigma, Kazuto Yamaki, a révélé que le Sigma 30 mm f/1,4 DC DN | Contemporary serait bientôt disponible en monture EF-M à l'occasion d'une conférence de presse donnée aujourd'hui à Tokyo.Source : https://twitter.com/dpreview/status/1149215976656969729
With so few native lenses available in the EF-M mount, it's great to see Sigma introduce all three of their popular F1.4 DC DN C primes for Canon's much-neglected APS-C system, so much so that we decided to test all three at once.While the 56mm is undoubtedly our pick of the bunch, all three would make great additions to the rather threadbare camera bag of a Canon EOS M shooter.This is especially true for the wide-angle Sigma 16mm F1.4 DC DN C and the short-telephoto Sigma 56mm F1.4 DC DN C, as there are no direct rivals in the Canon range. The only alternatives choices to date have been adapting one of Canon's admittedly huge range of EF and EF-S lenses to the EOS M using the EF-EOS M mount adapter.It's a tougher sell for the Sigma 30mm F1.4 DC DN C because of the EF-M 32mm f/1.4 STM, but even then the Sigma is pretty compelling simply because of its price - some £$200 less than the Canon lens.So, if you're a frustrated Canon EOS M user who has outgrown their kit zoom and doesn't want to adapt a Canon DSLR lens, the introduction of three well-built, high-quality, ultra-fast Sigma lenses in the native EF-M will be music to your ears.The EF-M 32mm also deserves a very close look, too, but in our view all three Sigma lenses would make an excellent addition to any Canon APS-C shooter's kit bag, greatly expanding its versatility in low light and making it easy to achieve shallow depth-of-field effects.Now if only Sigma would make a 35mm-equivalent F1.4 prime lens too...
The lens has become compatible with focus ring adjustment functionality.
It introduces compatibility with the “focus ring control” function of the camera, allowing either “linear” or “non-linear” focus movement to be selected when using MF. SIGMA fp L , SIGMA fp, Panasonic Lumix S1, Lumix S1R, Lumix S1H, Lumix S5, Lumix BS1H, Leica SL2, SL2-S are supported.SIGMA fp L will be supported by updating to firmware Ver.2.00 scheduled to be released on January 27, and SIGMA fp will be supported by updating to firmware which is scheduled to be released in April.For more information on linear and non-linear focusing, please refer to our frequently asked questions.
A compter du 8 avril prochain, disponible également en monture Fujifilm X :SIGMA launches interchangeable lenses for Fujifilm X Mount cameras | Information | News | SIGMA Corporation
Oui intéressant. Attendons les premiers tests. La version DN est à 200€. A suivre.Pierre
The specification has been changed so that the focus position of the lens when the ON/OFF (power) switch is turned “ON”, or when the camera is restored from power save, is set to the same shooting distance when the ON/OFF (power) switch was turned “OFF” or when power save was activated.
It has improved AF performance and accuracy.
https://www.sigma-global.com/en/lenses/c016_30_14/?tab=support&local=firmwareli]AF assist function during video recording is now supported.*Only SONY camera models with AF assist function are supported.[/li][/list]
In combination with the Sony α6700, an occasional issue of instability in operation has been corrected.