Here is the Sigma 16mm, 30mm & 56mm F/1.4 Lens Review by David Thorpe. These three reasonably priced Sigma f/1.4 Contemporary lenses compared. See below for both video and comparison table.
At a time when some Micro Four Thirds lenses are costing an arm-and-a-leg to purchase, Sigma seems to be bucking the trend with a collection of f/1.4 Contemporary lenses that are sensibly priced, but at what cost? Do they sacrifice sharpness, focus speed or build quality in exchange for a better price?
|Sigma 56mm f/1.4 DC DN C||Sigma 30mm f/1.4 DC||Sigma 16mm f/1.4 DC DN C|
|Angle of View||No Data||50.7°||No Data|
|35mm equivalent||No Data||45mm||No Data|
|Maximum magnification||No Data||No Data||No Data|
|Box Contents||No Data||Front and rear caps, lens hood, case.||No Data|