Here is a Canon RF 100-400mm f/5.6-8 IS review. One of the less expensive lens…
Photographer and reviewer Dustin Abbott compared four 85mm lenses: the Canon EF 85mm f/1.4L IS (), Sigma 85mm f/1.4 ART (), Tamron 85mm f/1.8 VC (), and Zeiss Otus 1.4 ().
The showdown comes in two parts. Part one gives a detailed breakdown of the resolving power of four of the top 85mm options, part two gives a detailed breakdown of the rendering from each lens, including chromatic aberrations, bokeh quality, facial rendering, actual focal length, contrast, and more.
I consider Dustin one of the serious reviewers out there.
The Canon EF 85mm f/1.4L IS is without any doubt the hottest Canon lens of 2017 and it gets one positive review after the other. We gave it a lot of coverage.
EF 85mm f/1.4L IS:Dustin Abbott]