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Article by Matteo Berbenni - 4th October 2016


- Focal Length: 150 – 600 mm

- Maximum opening: f5/6.3

- Minimum opening: f22

- Optic construction: 24 elements in 16 groups

- Camera angle: 16.4° - 4.1°

- Number of plates diaphragm: 9

- Minimum distance of MAF: 2.60 mt

- Diameter Filters: 105 mm

- Dimensions: 121 x 290.2 mm<

- Weight: 2860 gr

If you had the chance to look at my shoots that have been published on the website, you probably would foresee that I love naturalistic photography and, above all, taking photos of fauna. I prefer the fauna of the Alps, which forces me, not only to long hide, but also to strenuous walks.

So I have looked for a lens with these features:

- wide focal excursion, in order to be able to use only a lens for both mammalian of large dimension and avifauna;

- clearness: to be able to see the details of the plumage in an avifauna’s shoot is essential;

- fast autofocus, necessary to shoot at moving animals;

- solidity and compactness that are essential to deal with hard weather conditions;

- agility/practicality: nature is unpredictable so you should always have the lens ready to shoot, without the tripod.

Personally, I think the Sigma 150-600 F/5-6,3 Dg Os Hsm Sport is the right compromise, with a good price/quality ratio (I paid 1.769.00, but on some website you can find it cheaper).

The Sigma has an excellent focal excursion: from 150 to 600mm (in my case, together with a Canon 7D, it becomes 240-960mm), camera angle 16,4°- 4,1°, that allows me to take photos from very far away without photomultiplier.  Sigma has analysed all the possibilities and has created a new seriew of multiplier 1.4 e 2 X for those who have only a full frame camera, that permit the use of autofocus until f8. Once you have put together the TELE CONVERTER TC-1401 o TC-2001, they transform the lens in a “super zoom” MF 210-840mm F7-9 or in a MF 300-1200mm F10-12.6, respectively.

I think the clearness is very good. At 150 mm the level is quite high till his maximum opening (f5.0), but, as with the majority of lens, you achieve the best results closing the diaphragm of a pair of stops (f5.6 – 6.3), as you can notice for any length. At 600 mm, I suggest you to shoot at f8, in case light allows you.

The AF is sufficiently fast and precise, thanks to the HSM (Hyper Sonic Motor); according to the manufacturer, in this version it has increased of 5% the velocity of the focalization. Furthermore, you can choose the range of the autofocus’ action, through a selector put on the lens, in order to improve the performances (until 10 mt and from 10 mt to infinite). I rarely had some difficulties with the focalization, even in low brightness conditions.

The solidity and compactness are indisputable: since the first contact, the Sigma looks like solid, robust and appropriate to hostile weather conditions, thanks to its tropicalization, going to the detriment of the weight…2.860 gr are a lot, but the focal excursion allows you to put in your bag only one “all-around” lens. However, the lens is balanced and usable freehand.

The Sigma 150-600 f/5-6.3 DG OS HSM Sport is sold together with a lens shade made of metal, that you put on the lens through a screw, a lens cover of a soft material that covers entirely the lens, a shade and a clamp for the tripod.

In the posterior part, beyond the range of autofocus’ action, on/off autofocus and stabiliser, there is also the custom selector that allows you to choose two personalised profiles that can be previously set by the photographer through the extra Sigma USB Dock equipped with a software (you can but this product separately for more or less 45,00 euros).

I attach some of my shoots made with the Sigma that I think exalts the features of the lens.

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