100mm DXOMark review
https://www.dxomark.com/Reviews/Zeiss-Milvus-2-100M-ZF.2-review-Ultra-high-performer
Zeiss lenses overview
15mm review
Very high performance lens.
https://www.ephotozine.com/article/zeiss-milvus-15mm-f-2-8-distagon-t--review-30186
18mm review
Excellent sharpness and almost no CA.
https://www.ephotozine.com/article/zeiss-milvus-18mm-f-2-8-distagon-t--lens-review-30211
135mm review
Sharp, flare resistant, weather sealed lens.
https://www.ephotozine.com/article/zeiss-milvus-135mm-f-2-0-apo-sonnar-t--lens-review-30209
100mm
18mm review
This lens has an f/2.8 aperture and you won't be afraid to use it. Images captured at f/2.8 are sharp across the frame.
Center of the frame details show a nice contrast increase gained by stopping down from f/2.8 to f/4 where the results become razor sharp. You need real attention to detail to see this improvement in real world results.
http://www.the-digital-picture.com/Reviews/Zeiss-18mm-f-2.8-Milvus-Lens.aspx
Zeiss 15mm f/2.8 review
https://www.the-digital-picture.com/Reviews/Zeiss-15mm-f-2.8-Milvus-Lens.aspx
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