DC Watch met the developers of the 150-600mm Sports and Contemporary lenses for a long interview. The awkward Google translation (the truth about Sports lenses is at the end of this post) likely made me miss a few bits of info, but here you go nonetheless.
- Although the two lenses were unveiled at the same time, Sigma took a few extra months to refine the Contemporary version.
- The extensive use of metal in the S plays a big role in the extra weight (2,860 g) compared to the C (1,930 g), which utilizes more plastic (TSC I guess).
- The size of the front lens was mostly determined by the position of the diaphragm. The closer to the sensor plane, the larger the front lens has to be, for a given level of peripheral illumination. That’s why the S boasts a larger front element. It’s not a matter of corner resolution.
- There should not be any noticeable difference in OS effectiveness between the two models. Both incorporate the latest advances in this technology, with just a few differences in how the units are integrated.
- Following the previous point, Sigma didn’t want to cripple the 150-600mm C, even though it is supposed to be a lower-end lens. In particular, it offers the same feature-rich switch panel as found on the S version.
- The slit at the base of the C’s lens hood helps eliminate debris and reduce motion when the wind blows, by allowing the air to flow out.
[Source: SIGMA 150-600mm｜Sports & Contemporary, at DC Watch]
The Fun Bit
For a model that has been planned as APO 150-500mm F5-6.3 DG OS HSM successor, would contradict the specification occurs when the you can put the all the elements required for the super-telephoto zoom of this class, robustness and reliability and differentiate into two products of and sex-oriented “Sports” line, of portability and mobility-oriented “Contemporary”.