The majority of the guts of the TDP review has been posted, critically including lens IQ information:
https://www.the-digital-picture.com/Reviews/Canon-EF-85mm-f-1.4L-IS-USM-Lens.aspx
IQ comparisons here:
85 f/1.4L IS vs. 85 f/1.2L II @ f/1.4
85 f/1.4L IS vs. Sigma 85 f/1.4 Art @ f/1.4
85 f/1.4L IS vs. Zeiss Milvus 85mm f/1.4 @ f/1.4
(Otus left out of these links as it's never been tested on the 5DS R, apparently)
Understanding a few critical caveats...
...one must still tip their cap to Sigma here. The 35L II delivered the same level of sharpness (and terrific rendering, great AF, etc.) as the 35 Art, but here at 85mm, Canon either couldn't repeat that feat for cost or technical reasons, or they prioritized rendering/OOF areas above sharpness. If you are a sharpness junkie with unreasonable expectations of wide open performance, the Sigma would appear to still be the top dog.
But the Canon has first party AF, is sealed, has IS, and may deliver better color/rendering to your eye (I haven't compared enough to judge). And it's certainly no slouch sharpness-wise.
Vignetting not posted yet (one might imagine this might not be pretty at 77mm front element vs. larger 3rd party front elements), but much of the review is in play. Have a look.
- A
https://www.the-digital-picture.com/Reviews/Canon-EF-85mm-f-1.4L-IS-USM-Lens.aspx
IQ comparisons here:
85 f/1.4L IS vs. 85 f/1.2L II @ f/1.4
85 f/1.4L IS vs. Sigma 85 f/1.4 Art @ f/1.4
85 f/1.4L IS vs. Zeiss Milvus 85mm f/1.4 @ f/1.4
(Otus left out of these links as it's never been tested on the 5DS R, apparently)
Understanding a few critical caveats...
- Just one lens each in these IQ comparisons
- Sharpness is not remotely everything in a lens
...one must still tip their cap to Sigma here. The 35L II delivered the same level of sharpness (and terrific rendering, great AF, etc.) as the 35 Art, but here at 85mm, Canon either couldn't repeat that feat for cost or technical reasons, or they prioritized rendering/OOF areas above sharpness. If you are a sharpness junkie with unreasonable expectations of wide open performance, the Sigma would appear to still be the top dog.
But the Canon has first party AF, is sealed, has IS, and may deliver better color/rendering to your eye (I haven't compared enough to judge). And it's certainly no slouch sharpness-wise.
Vignetting not posted yet (one might imagine this might not be pretty at 77mm front element vs. larger 3rd party front elements), but much of the review is in play. Have a look.
- A