Sigma 886101 18-300mm F3.5-6.3 DC Macro OS HSM Lens for Canon

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Sigma 886101 18-300mm F3.5-6.3 DC Macro OS HSM Lens for Canon

Sigma 886101 18-300mm F3.5-6.3 DC Macro OS HSM Lens for Canon

RRP: £99
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Insgesamt ist das Objektiv griffig und liegt gut in der Hand, einige Fotografen wird aber vermutlich das Design des Fokusrings etwas irritieren. Dieser ist ganz vorne an der Linse, schmal gehalten und dreht sich im Gegensatz zu vielen anderen Linsen beim fokussieren mit. Dadurch bleibt die abgebildete Skala präzise, man sollte aber darauf achten, dass man den Ring beim Fokussieren nicht aus Versehen festhält. Dagegen ist der Zoomring angenehm groß und hat eine griffige Oberfläche. Hier zeigt sich ein weiteres praktisches Merkmal: Einige Brennweiten sind am Ring markiert, sodass man dies für die Berechnung der Belichtungszeit und als allgemeine Orientierung nutzen kann. Opinione: A distanza di un anno e dopo non so quante fotografie scattate, voglio esprimermi con effettiva consapevolezza d'uso riguardo il Sigma 18-300 f3,5/6,3 DC macro. Mit einem Reiseobjektiv ist man immer schnell vierstellig, oft am Anschlag (bei mir: ISO 6400). Zumindest bei trübem Wetter und früher Dämmerung. Aber der fast unhörbare Autofokus schlägt sich gut!. Die Pentax steht auf P und auf P habe ich im Kameramenü die MTF-Kurve gelegt. Interessant ist dabei: die Blendenwerte der MTF-Kurve bewegen sich logischerweise immer etwa gleichmäßig oberhalb der Nenn-Lichtstärke. Nur am Teleende des Sigma 18-300 macht die Blendensteuerung überraschenderweise die Blende wieder ein bisschen weiter auf. Und die Abbildungsleistung bei 300 mm ist tatsächlich eine Stärke des Objektivs. There's a noticeable downturn in clarity at 100mm. The maximum aperture is now f/5.6, and the lens manages just 1,691 lines when shot wide open. It improves to 1,919 lines at f/8 and 2,078 lines at f/11. Edges are very soft—just 900 lines at f/5.6, 1,248 lines at f/8, and a more acceptable 1,698 lines at f/11. Sigma lists the minimum focusing distance at around 15.3 inches (39cm), but in my tests focus was achieved even closer. You can really get up close and personal using this lens. In addition, there is an optional macro adapter (great build also) available for this lens which will further enhance its macro capabilities.

Natürlich muss einem klar sein, dass eine solche Lösung immer einen Kompromiss (hinsichtlich der Bildqualität) darstellt, welchen vermutlich „Hobby-Fotografen“ eher bereit sind einzugehen als Fortgeschrittene oder Profis. Hier muss man für sich entscheiden, ob einem die Bequemlichkeit (= Immer-Drauf-Objektiv) oder die bestmögliche Bildqualität (= separate Objektive je nach Einsatzsituation) wichtiger sind.

Chromatic aberration is the lens' inability to focus on the sensor or film all colours of visible light at the same point. Severe chromatic aberration gives a noticeable fringing or a halo effect around sharp edges within the picture. It can be cured in software.

We’re admittedly not the biggest fan of superzoom lenses, but the Sigma 18-300mm f/3.5-6.3 DC MACRO OS HSM Contemporary is one that is making us take a close look at the category again. Designed for cameras with APS-C sensors, it isn’t the engineering feat that the Tamron 28-300mm f3.5-6.3 DI VC PZD is. This is part of Sigma’s Contemporary series, but instead feels like an Art lens in many ways. Designed for the entry level DSLR user that wants an all in one zoom lens and those of us that really hate walking, this lens is one that many folks will fall in love with. In meinem Vergleich schneidet das Sigma 18-300 Contemporary etwas besser ab als das Sigma 18-250 – was aber wegen des höheren Preissegmentes auch nicht verwundern dürfte.the lens is heavy and bulky, but if you are used to the DA16-85 there is not much difference in size or weight; In alcuni scatti l'aberrazione cromatica è decisamente evidente, Lightroom aiuta ma non elimina totalmente l'effetto. Wer bei Sigma die Bezeichnung „HSM“ im Objektivnamen liest, der weiß, was er erwarten kann: Ein präziser, leiser und schneller Ultraschallmotor. Natürlich bildet das 18-300mm Contemporary hier keine Ausnahme. Im Test war der Autofokus treffsicher und absolut geräuschlos – schnelle Motive oder ein Einsatz bei Videos stellen also für das Sigma kein Problem dar. Manuelles Nachfokussieren ist über den Ring natürlich ebenfalls möglich.

Distortion is often a weakness of high ratio zooms like this. Imatest detected 4.16% barrel distortion at 18mm, which is quite strong, although many similar lenses have just as much distortion. Pincushion distortion of 0.656% is present at the telephoto end, which shouldn't pose too many issues for most. If you require completely straight lines the distortion pattern is uniform across the frame throughout the zoom range, which should make applying corrections in image editing software relatively easy to apply. Throughout our tests, we didn’t find very much purple fringing–and if anything it was only in the most high contrast areas. Extra Image Samples The image above is designed to look like natural light, but instead there is a flash being bounced off of a window. Color Rendition And the lens is worse at 150mm. At f/6.3 it shows just 1,386 lines across the frame, with edges that are very blurry (757 lines). There's modest improvement at f/8—a 1,574 line average with muddy edges that fall a bit shy of the 1,000-line mark. The story is better at f/11, but even then the lens hits just 1,830 lines and edges fall shy of 1,500 lines. Lastly, C stands for indicated this lens is part of Sigma’s Contemporary series. This lens is designed to be mounted only to APS-c(cropped) sensor cameras.

After-all, this lens bears the designation of a macro lens so let’s talk a little about how it truly performs as such. Dedicated macro lenses produce images with a magnification factor of around 1.0 or 1.1x (meaning the subject is life size on the camera sensor). The Sigma 18-300mm has a maximum magnification factor of 1.3x. Though it may not be considered a true macro lens, it performs astonishing well for a lens with such a large focal range. Ein deutlicher Unterschied zeigt sich in der Zeit, die das Objektiv zum Scharfstellen des Auto-Focus benötigt: Hier ist das Sigma 18-300 spürbar flotter als das Sigma 18-250. Now on to the good stuff! This lens is really, really sharp for a super zoom and is also competitive with most of the standard zooms at similar focal lengths I have tried. This lens doesn't feel like too much of a compromise in everyday use and I don't often find myself saying "I wish I had X lens" instead of this on the camera. At 300 mm, it's completely at home with centralized subjects and I could not be happier with the performance (and especially at the price). On the wide end, the performance is no less impressive to me (with the exception of "abrupt" vignetting in the corners that doesn't really go away even at f/10 and beyond). In between, the performance is more than pretty good across the board. This lens has really good control over chromatic aberration and is much better behaved in this respect to any other super zoom I've auditioned. At it's worst (18 mm and above f/5.6), red/green fringing is incredibly minor and hardly noticeable. Mounted on a K-5, I have found the focusing to be pretty fast and surprisingly accurate even in artificial and/or poor natural light and definitely better than I would have believed. It's a little faster on the K-30, but only in some situations. Lens Hood Indicators: In addition to the rubberized ring, the lens hood also has mounting markings to help mount the hood on the go or in low light.



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