You get you what you pay for with the Canon EF 200-400mm f/4L IS USM Extender 1.4X: superlative performance and flexibility.
The 55-250mm f3.5-5.6 STM fills a big hole for the dual-lens kit devotees of the company's latest Rebel models.
The Canon EF 70-200mm f4 IS USM L lens is a professional grade 70-200mm lens without the size and heft, as well as price, as found in f2.8 versions.
The general-purpose zoom lens costs about $100 more than Canon's equivalent, but Sigma thinks its image quality means the lens is worth the extra money.
Versatile, sturdy, and built with high-quality optics, the Sigma APO 70-200mm F2.8 EX DG OS HSM offers a good value, although it's not exactly cheap.
Recent patent filings reveal details of a possible successor to the Canon 17-40mm F4 L USM lens, one of the company's most popular lenses.
One of Canon's most popular lenses gets better optics, coatings, and bokeh--but costs $1,000 more and doesn't get image stabilization. New wide-angle prime lenses do get it, though.
While it's not cheap, the Sigma 50mm f1.4 lens provides great value for the money.
Unlike its pricier f2.8 alternative, the $1,500 24-70mm f4 model can compensate for camera shake. Also new for December: an $850 image-stabilized 35mm f2 lens.
The new lens, part of Sigma's high-end "art" product line, will ship in November, but its true competitiveness won't be known until Sigma reveals its price.