The Sigma 50mm F1.4 EX DG HSM is a fast prime that behaves like a classic 'normal' lens on full frame, and a short telephoto portrait lens on APS-C cameras. It offers impressive central sharpness at large apertures, coupled with unusually low vignetting for its class due to its oversized optics; however this also means it’s rather large. Build quality is excellent, and the lens is available in versions to fit every SLR on the market.

Product timeline

Roundup: Third-party Lenses for Enthusiasts

Article, Nov 16, 2011

Sigma 50mm f/1.4: A new standard?

News story, Mar 18, 2008

Sigma 50mm F1.4 EX DG HSM review

Review

Quick specs

Lens type	Prime lens
Focal length	50 mm
Image stab.	No
Lens mount	Canon EF, Four Thirds, Pentax KAF3, Sony Alpha, Sigma SA, Nikon F (FX)
Max aperture	F1.4
Min aperture	F16.0
Min focus	0.45 m (17.72″)
Max magnification	0.14 x
Weight	505 g (1.11 lb)
Length	68 mm (2.69″)

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Our review

The Sigma 50mm 1.4 has smooth out-of-focus backgrounds, improved sharpness at large apertures, and lessened vignetting due to its large lens barrel. It's a far better portrait lens on APS-C than legacy primes designed for 35mm film, as well as an extremely competent standard on 35mm full-frame.

Good for: Those looking for a sharp, fast normal lens with quick autofocus and good build quality -- especially APS-C camera owners in search of the perfect portrait lens.

Not so good for: Anyone who wants their prime lenses to be small and lightweight.

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Highly Recommended

Scoring

Build Quality

Ergonomics and Handling

Features

Image Quality

Value