With its excellent Art line reputation, Sigma is one of those brands – and its lenses are discounted even further for its end ...

Whereas the 56mm lens has a portrait-friendly ‘effective’ 84mm focal length in full-frame terms, the 35mm equates to 52.5mm .

Designed for full-frame cameras, the new 55mm and 100mm f/2.8 Tilt-Shift 1X Macro lenses enable photographers to control the ...