Reviews and Problems with Sigma 30mm F1.4 EX DC /HSM
Showing 1-10 of 14
Sigma 30mm F1.4 EX DC HSM Lens Review
SLR Lens and Camera Reviews
6 June 2009
Summary: Sigma 30mm f/1.4 EX DC HSM is currently the only wide angle prime that was specifically designed for APS-C sensors and as such it has no direct competition. Nevertheless, users should carefully review the benefits this lens provides versus the more traditional FF type wide angles. On the positive side we have pretty decent center image performance, low levels of vignetting, good build quality along with affordable price.
Excerpt: Originally published October 2005. WHAT YOU NEED TO KNOW: The first high-speed "normal" lens for digital SLRs with APS-sized sensors, this 30mm f/1.4 is Sigma's first nontele lens to incorporate elements of SLD (Special Low Dispersion) glass. (SLD elements promise improved control of chromatic aberration.) The lens also has an all-glass aspheric element, in addition to a more common glass/resin hybrid aspheric.
Conclusion: This is a ‘standard’ lens for a cropped digital SLR. 25 years ago, all SLR’s came with a ‘standard’ lens and everybody learned how to use one. Those lenses, at 50mm, are still about but don’t have the versatility that they had on a 35mm film camera. This 30mm offering from Sigma is a brave move forward that takes a backward step! It makes a lot of sense.
Pros: Fast aperture, Picture quality, Consistent performance, Fast autofocus
Conclusion: I’m glad we’ve reached a moment in which the test of this lens, on all five mounts, appeared at our website. Its presence is important for a few reasons. First of all, it’s one of the few lenses which can be enjoyed by owners of all DSLRs with small sensors, thus making the comparison of the results obtained on different detectors very instructive. Second of all, the fact of using this lens when doing our camera tests made its thorough test a compulsory thing.
Cons: poor image quality at the edge of the frame,, random accuracy of focus mechanism,, chromatic aberration should be slightly smaller,, too high distortion for these lens parameters,, very large astigmatism,, noticeable coma.
Sigma AF 30mm f/1.4 EX DC HSM (Nikon DX) - Review / Test Report
23 July 2008
Conclusion: It seems the primary design priority for the Sigma AF 30mm f/1.4 EX DC was to achieve the highest possible center resolution without caring too much about the rest. The border performance of the lens is just so-so at f/1.4 and only good when stopped down. Vignetting is high at large apertures and neither CAs nor distortion are overly impressive for a prime lens.
Sigma AF 30mm f/1.4 EX DC (Pentax K) Review / Test Report
23 July 2008
Conclusion: A quite strange design priority but there're applications for this. This is a pretty interesting lens if you want to isolate a (near-centered) object from the rest of the scene using an ultra-large aperture setting. The quality of the bokeh (out-of-focus blur) depends somewhat on the background/foreground structure - it can look "smeary" close to the image borders if the scene is a bit nervous. This is probably a side effect of the low resolution here.
Sigma AF 30mm f/1.4 EX DC HSM - Review / Test Report
22 July 2008
Conclusion: We all know that zoom lenses are compromises regarding speed and performance but we expect fix-focals to perform better than that. Sigma AF 30mm f/1.4 EX DC HSM may perform pretty good in absolute terms but for a fix-focal the lens disappoints a little. The center performance is exceptionally high but the borders are not all that impressive. The other image parameters such as distortions, vignetting and CAs are Okay but nothing to rave about.
Excerpt: Sigma's 30mm f/1.4 EX DC HSM is a useful prime lens for the D-SLR owner with a cropped format APS-C type sensor. Essentially it takes on the role of prime standard lens, effectively offering 45mm (1.5x), 48mm (1.6x) or 60mm (2x) - depending on which camera you use it with. The lens comes in mount fittings for Sigma, Canon, Nikon, FourThirds, Sony and Pentax D-SLRs.
Summary: A very fast prime lens that covers a 'normal' angle of view and is designed for 'APS-C' format DSLR cameras.Designed exclusively for DSLR cameras with 'APS-C' sized image sensors, Sigma's 30mm F1.4 EX DC HSM lens is solidly constructed and available in mounts to suit all popular brands - including Olympus and Panasonic. On the Canon EOS 40D and 400D cameras we tested it on, this lens equates to a 48mm lens on a 35mm camera - which is close to a 'standard' viewing angle.