The-Digital-Picture has completed their review of the Zeiss Milvus 15mm f/2.8 and have come away with some surprising results.
From The-Digital-Picture:
This lens' predecessor, the Zeiss 15mm f/2.8, was one of my all-time favorite lenses and I very much looked forward to evaluating the Milvus version. Unfortunately, this evaluation became a very time-consuming one with four different lenses being examined. I can't make a lens look any better than it really is and, while this lens is really sharp in the center of the frame, I can't make the corners shine and that leaves me wanting, especially relative to the lens I previously owned. If these lenses truly have the same optical design, something happened to degrade the image quality. Read the full review
I find this shocking, as the original Zeiss 15mm f/2.8 is my favourite wide angle lens for landscape work and has proven to be a workhorse and optical gem. I'm shocked the Milvus 15mm f/2.8 appears to have taken a step backwards.