DxOMark has just tested the new Sigma 500mm f/4 DG OS HSM Sports lens for Canon EF mount. This lens is Sigma’s latest super telephoto prime lens, it costs $5,999 in US, now in stock at Amazon/B&H Photo/Adorama. Tested on Canon EOS 5DS R, it is only one point below EF 500mm f/4L IS II USM Lens. Yet the price is $3,000 cheaper than EF 500mm f/4L IS II USM lens. See the DxOMark below:
EF 500mm f/4L IS II USM Lens Vs. Sigma 500mm f/4 DG OS HSM Sports Lens:
Conclusions from DxOMark:
In terms of image quality, the Sigma 500mm f/4 is excellent, delivering high levels of uniform resolution on all the professional full-frame EOS 5DS R, 1D X Mark II, and 5D Mark IV DSLRs, with no geometric distortion nor problematic chromatic aberration to worry about. There’s some vignetting at the maximum f/4 aperture, but at around –1EV, this isn’t overly concerning and corner shading is virtually eliminated from f/5.6.
Head-to-head against the Canon EF 500 f/4L IS II USM, the Sigma 500mm f/4’s image quality compares very favorably. The Canon lens is fractionally sharper on the 5DS R, but the Sigma offers a modest improvement in resolution on the 1D X Mark II and 5D Mark IV. To be fair, there’s very little to separate them in real-world terms on any of these DSLRs, however, making the Sigma 500mm f/4 a great value option.