Probably the best automatic header comment Sigma 50 1.4.

IT 168？ Evaluation of Sigma 50/ 1.4 DG HSM A0 14 (hereinafter referred to as ART50) was released on October 20 14 65438+ 10, providing Canon EF, Nikon F, Sony A, Sigma SA * * * or through Sigma MC- In ET's view, this is the best AF 50mm fixed-focus lens in the field of 135 SLR at present.

Mirror group:

ART50 has eight groups of 13 optical structures, including 1 aspheric lens and two ultra-low dispersion lenses. Different from the symmetrical structure of the traditional 50mm fixed-focus lens, Sigma ART50 and Zeiss Otus 55/ 1.4 both adopt complex and huge telescopic structures, which is equivalent to "degrading" the wide-angle lens in medium format to a 135 full-frame camera.

Key points:

Equipped with ultrasonic focusing motor to support full-time manual focusing. The nearest focus distance is about 0.4m, and the floating focus design ensures that the ART50 has excellent image quality throughout the focus stroke.

Operation:

The mirror of ART50 has AF/MF switch and focal length window. It weighs about 8 15g, and when it is matched with the fuselage without a vertical handle, the center of gravity will lean forward.

★ Other specifications ★

9-blade circular aperture

77 mm filter aperture

85.4×99.9 mm

About 8 15g

* Size and weight are Sigma SA bayonet version.

▲ Mirror group structure of Sigma ART50

Purchase suggestion

ART50 is equipped with lens front and back covers, hood and soft bag. The starting price of licensed goods in mainland China is 5999 yuan. 2065438+reached the lowest price of 39xx yuan in September 2006, and the current price is about 4500 yuan.

Sigma introduced 50/ 1.4 EX DG HSM lens in 2008. If the non-artistic version of 50/ 1.4 is just "big", then the current ART50 is "big and good".

Sigma ART50 corresponds to the top 50mm fixed focus, including Canon EF 50/ 1.2L USM, Nikon AF-S 58/ 1.4G, Sony 50/ 1.4 ZA SSM and Fe 50/ 1.4ZA .. In these lenses, Only Sony FE 50/ 1.4 ZA can compete with Sigma ART50 in resolution-for this reason, ET claims that Sigma ART50 is the best 135 SLR AF 50mm fixed-focus lens at present.

Of course, there is no perfect lens in the world. In addition to the consumer's deep-rooted concept that "the second factory must run out of focus", the disadvantages of Sigma ART50 also include scattered picture edges and dragging lines (intuitively, Jiao Wai is a bit messy), which is too heavy and the center of gravity is not conducive to holding for a long time when paired with most cameras.

* No matter the original factory or the deputy factory, the lens may be out of focus. Out-of-focus is caused by the combination of fuselage and lens. Mid-to-high-end SLR bodies usually have AF fine-tuning function, and Sigma SGV lenses also support fine-tuning focusing through USB adjustment base. If you think your operation is too troublesome, you can send the fuselage and lens to Sigma after-sales center for free adjustment.

According to ET, the real rivals of Sigma ART50 are actually 50/ 1.8 lenses, including Canon EF 50/ 1.8 STM, Nikon AF-S 50/ 1.8G, Sony Fe 55/ 1.8 ZA- Canon and Nikon's 50/.

Finally, for Sony micro-single users, ET suggests giving priority to native bayonet lenses. The significance of Sigma MC- 1 1 adapter ring is that it makes full use of the photographer's "assets" and is suitable for users who have double repairs and multiple repairs, or users who change doors from Canon to Sony as a transition.