The 50mm F1.4 DG HSM is a premium 'normal' prime designed for full frame SLRs, and part of Sigma's 'Art' line. Not to be confused with the older 50mm D1.4 EX DG HSM, it's a completely new lens with a complex optical formula of 13 elements in 8 groups, and a minimum focus distance of 40cm. As part of the 'Global Vision' line it's also compatible with Sigma's USB dock and Mount Conversion Service. On APS-C / FX SLRs it acts like a 75mm short telephoto lens.
Sigma 50mm F1.4 DG HSM | A Lens
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“ It's the best autofocus 50mm prime we've reviewed to date, with optics so good that we can't really find anything to criticize.”
- 50mm focal length
- 75mm equivalent focal length on APS-C cameras, 80mm equivalent focal length on Canon APS-C cameras
- F1.4 maximum aperture; F16 minimum
- Ring-type ultrasonic-type AF motor with full-time manual focusing
- 77mm filters
- 0.4m/15.7" minimum focus
- Available in Canon EF, Sony Alpha, Sigma SA, Nikon F (FX) mounts
|Lens type||Prime lens|
|Max Format size||35mm FF|
|Focal length||50 mm|
|Lens mount||Canon EF, Nikon F (FX), Sigma SA Bayonet, Sony/Minolta Alpha|
|Number of diaphragm blades||9|
|Aperture notes||Rounded diaphragm|
|Special elements / coatings||SLD glass elements, aspheric elements|
|Minimum focus||0.40 m (15.75″)|
|Motor type||Ring-type ultrasonic|
|Full time manual||Yes|
|Focus notes||Floating focus system|
|Weight||815 g (1.80 lb)|
|Diameter||85 mm (3.35″)|
|Length||100 mm (3.94″)|
|Filter thread||77 mm|
Scoring is relative only to the other lenses in the same category at the time of review.
|Ergonomics and Handling||
The Sigma 50mm F1.4 DG HSM | Art is distinctly large, heavy and expensive for its type. However this is more than made up for by its fast silent autofocus, solid build quality, and absolutely outstanding optics. Overall it stakes a very serious claim to be the best autofocus 50mm prime on the market right now.
Full frame users looking for the sharpest possible images, even when shooting at large apertures
Not So Good For
Anyone who shoots a lot in damp or dusty conditions
This lens is simply outstanding. Saved my day many times during sub-optimal light conditions. Razor sharp, ca and distortion almost non-existent. Now with the USB dock, future firmware updates and focus adjustments can be made at home. Sigma has nailed this one big time. Occassionally it hunts for a focus a bit, but that could rather be due to the light conditions one would use this lens at, than the focus itself. Down goes half a star for size, weight, price and missing weather sealing. ...