While it's not cheap, the Sigma 50mm f1.4 lens provides great value for the money.
The 50mm delivers sharp photos at almost all apertures.
The trio of Foveon-based cameras announced in February are priced similarly to their predecessors.
Pricing not available
The revised 18-200mm f3.5-6.3 macro lens sports the same fit and finish as Sigma's latest models.
The company brings its 18-200mm macro and 50mm f1.4 lenses up-to-date for 2014.
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.
Featuring the same focal length as a popular model from Canon, the new Sigma 24-105mm lens looks as though it will be a fierce competitor to the old workhorse.
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.
Photographers who switch between brands no longer need to worry about selling their existing third-party lenses. Sigma is offering a service that will change a lens mount for a fee.
The lens manufacturer has launched its Mount Conversion service, which will let you update any of its newer lenses to a compatible mount on demand.