Reviews and Problems with Sigma 50mm F1.4 EX DG HSM
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Value for money 8
Picture quality 9
Build quality 9
9 June 2010
Conclusion: When Sigma first announced the 50mm F1.4 EX DG HSM in March, our story headline (courtesy of our news editor and punmeister-in-chief) was 'A new standard?', and this has turned out to be remarkably prescient.
Pros: Class-leading image quality, Relatively low vignetting even at wide apertures on full frame, Reasonably fast and positive autofocus, with full-time manual override, Very good build quality
Summary: An amazing lens that is priced above the norm but delivers results that are similarly elevated. As it is available in a range of lens mounts, the greatest number of photographers have access to its immense power.
Excerpt: Similar in size, features, and price (though not format) to Sigma's 30mm f/1.4 high-speed "normal" prime for DSLRs with APS-C sensors, this 50mm full-framer ($500, street) also belongs to Sigma's EX family of pro-quality glass.
Summary: Sigma are clearly marketing this optic as a premium alternative to manufacturer's own lenses. In some respects the higher price is justified, but in others it is not. How you use the lens as well as the camera system you use will be the biggest factors in determining whether this lens is good value...
Pros: Excellent sharpness in the centre at most apertures, Low vignetting, 77mm filter size is the same as most professional level zooms
Cons: Maybe a little softer than I'd hoped at f/1.4, Heavier than any other 50mm f1.4 lens, Bigger than any other 50mm f/1.4 lens
Sigma AF 50mm f/1.4 EX DG HSM (FX) - Review / Test Report
10 May 2010
Conclusion: The amount of vignetting is quite heavy at f/1.4 but that's rather typical for such lenses. If you stop down to f/2.8 this will not be a real issue anymore though. The lens produces moderate barrel distortions which is a tad more than the standard in this lens class.
Excerpt: Appropriately, the 50mm f1.4 is an ‘EX’ lens – signified by a thin gold band around the barrel – which is Sigma’s high performance standard in terms of both the mechanical and optical constructions.