You asked
Zeiss milvus 25mm f 1 4 vs zeiss otus 28mm f 1 4?
The two lenses are close cousins. Both are manual-focus f/1.4 primes for full frame, both mount on Canon EF or Nikon F, and neither is stabilised. The difference is the focal length: the Zeiss Milvus 25mm f/1.4 is a little wider, and the Zeiss Otus 28mm f/1.4 is a little tighter.
On a full-frame body, 25mm takes in more of the scene, while 28mm sits closer to a classic street view. On a Nikon APS-C body, the Milvus frames like 38mm and the Otus like 42mm.
If you want a wide, close-in street lens, the 28mm sits right on the street focal-length guide's 28mm mark. If you want a little more room around your subject, the 25mm is the one to pick.
Written by Claude from this site's pages.