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Sigma 12-24mm F4 DG HSM Art Ultra-Wide Angle Zoom for the Era of Ultra-High Resolution Digital Cameras
Boasting the renowned Global Vision image quality from center to edge, the new Sigma 12-24mm F4 features the largest aspherical glass mold in the industry, offering photographers an ultra-wide angle zoom with virtually no distortion, flare or ghosting. Encompassing the long history of Sigma wide angle lens development expertise, the new 12-24mm F4 performance highlights include constant F4 brightness and the brand new Sigma AF system with 1.3X torque boost. The 12-24mm F4 features lens elements made with FLD (“F” Low Dispersion) glass, which is equivalent to calcium fluorite in performance. Combined with an optimized power distribution, the result is outstanding image quality from center to edges. With a minimum focus distance of 9.4 inches at 24mm, photographers can compose incredible close-up shots with expansive backgrounds.

The all new Sigma 12-24mm F4 DG HSM Art lens supports Canon, Nikon and Sigma mounts. The Nikon mounts feature the brand new electromagnetic diaphragm.

The Sigma 12-24mm F4 Art lens will be available in late October and retails for a recommended street price of $1599.00 USD.

niffe kirjoitti:Vähemmän kompromisseja kontrastin ja terävyyden suhteen? Siksi f/1:4?

Cumbo kirjoitti:... mutta miksi vain f/4.. :/

Cumbo kirjoitti:Tällaista lasia olen juuri odottanutkin Sigmalta, mutta miksi vain f/4.. :/

Weight 1,150g

Hel_NiS kirjoitti:

Cumbo kirjoitti:Tällaista lasia olen juuri odottanutkin Sigmalta, mutta miksi vain f/4.. :/

Weight 1,150g

RT-- kirjoitti:http://www.lenstip.com/index.php?test=o ... est_ob=488

. Summary

Pros:
solid and stylish casing,
excellent image quality in the frame centre,
very good image quality on the edge of the APS-C,
sensible image quality on the edge of full frame,
lack of longitudinal chromatic aberration,
imperceptible lateral chromatic aberration,
lack of problems with astigmatism,
noticeably lower distortion than that of its rivals,
slight coma,
low vignetting for the APS-C/DX sensor,
silent and accurate autofocus.
Cons:

distinct spherical aberration at 24 mm,
work against bright light could have been better,
impossible to attach classic filters.

Maffer kirjoitti:Aika ikävän oloinen focus shift ongelma.