[Nikon F] it feel heavy , great quality construction and nice design of the lens . , the focus is smooth and the quality of the image is the best, totally recommend

[21mm] I bought this lens for astrophotography and couldn't be more pleased. It has many other uses as well. The performance of this lens is simply amazing. I started shooting pictures way before autofocus was even a thing so it's natural for me. But seriously, manual focus is required for Milky Way photography anyway and it's not difficult with a wide-angle lens.

I attached a Milky Way image from Sedona taken with my Canon 5D Mark IV. To get this shot, I aligned and stacked 36 18-second frames.

[82 mm (Front)] I rented this lens and the Canon EF 24mm f/1.4 L II to see if the Zeiss was worth the extra cash and whether I could deal with the manual focus on my 5D Mk III. I know there are manufacturing variations from one sample to another, so it's hard to say whether my experience will be the same as your's. In my tests (same scene, same lighting, shot from a tripod, manual exposure and manual focus) the Zeiss beat the Canon every time in terms of sharpness. The upper right corner of the images taken with the Zeiss were not as sharp as the other corners, but still better than the Canon in every respect. The Canon image sharpness was the same as the Zeiss in the center of the image. The color of the Zeiss images appeared more natural as well, although this difference to the Canon lens was only slight. Finally, chromatic aberrations (CA) in the Zeiss were practically non-existent, while they were prevalent in the Canon. That said, it was easy to eliminate the CA using Lightroom, so in the end, CA wasn't really a factor. Despite the amazing performance of this lens, I would seriously miss the Auto Focus (AF) capability of the Canon. Having to always use Live View, zoom in to x10 magnification, and manually focus every time would wear me out (and seriously frustrate my wife) during our travels. If I was never pressed for time, and was always using a tripod, I would buy the Zeiss in a heartbeat. But for my landscape photography where I like to cover more ground to see more sights, I would go for the Canon lens and its AF capability, fix the chromatic aberrations with software, and just live with the softer corners.

[90°] This is my favorite lens. I like how it feels, the smooth motion of the focusing and aperture rings, the way the manual focus works well with my camera, which lights up red pixels for everything that's in focus, I like its all-metal construction, and I like the picture quality. It produces remarkably distortion-free images for such a wide lens. When Lightroom applies the lens profile, not too much happens, though there is slight bulging in the middle. I can't say if its picture quality is better than another 15mm, or even a wide zoom, but it's a joy to use.

[Nikon F] Among other things, designing a lens is an exercise in balancing factors that are often in conflict. For instance high speed versus available depth of field. Another is build quality versus low cost. My photographic interest is landscape. For me, not having f/1.4 means little compared to having high quality depth of field at small aperture sizes. Having smooth, easily controlled manual focus leads to more creative control as does an easily readable depth of field scale on the lens. Finally, build quality means lenses I use constantly will have a very long life requiring no additional investments in replacements. I still regularly use a Linhof with a Zeiss lens my father bought in the 1940's.

[Full-Frame] I recently used this lens in the badlands of New Mexico and the one feature I was most impressed with was the color richness. Of course as a Zeiss lens, it is tack sharp with the purest whites. Other than the natural distortions of a 15mm lens at the perimeter of the image it is perfect! Love it!

[0.2x] Just a first sight review as the weather has been so bad and work gets in the way that I haven’t been able to get out with this sweet beast of a lens.

BIG SHOUT OUT TO B&H You ROCK!! Their shipping is on point... I’ve ordered many times here and never a glitch. Your checkout online is the best I’ve used. Don’t change anything in this app.

The Zeiss Milvus 21mm is a beautiful lens. It is in the Milvus style so it looks the same as other Milvus lenses except BIGGER. The focus ring is butter smooth.
Swiss Advant-Garde

FILTERS APPLICATION... I have a NiSi S5 System and just received a adapter ring ... it won’t work with the NiSi Wide Angle adapter and I need to explore other options ... NISI V5 100mm being one option. More later.
Again... B&H ... job well done and I hope to be able to stop into the main store one day soon.

[21mm] What an excellent lens. Its more useful to me than my 15mm Zeiss and is getting nearly as much use as my Milvus 50mm.

[Full-Frame] I will be honest and say that I did not buy my copy from B&H. However I do own this lens now. I rented one several times in the past to make sure of what I was getting as well as the image quality and attributes this lens would give me for what I planned to use it for. I primarily do nature/landscape and night sky photography. Since buying this lens, it is my first mounted lens for all my nature/landscape and night sky photography. Zeiss has always had what people describe as a 3D type quality to the images their lenses. It is true. I can look thru my work and I know which images I took with my Zeiss lenses vs any of my other lenses. All my lenses are pro grade lenses so my Zeiss lenses are not being compared to cheap grade lenses. For this lens to be as wide as it is, it has very little distortion. Usually, the only type of alignmentI have to correct for in post is the the standard issue when taking an image with a wide lens and not being square to or on plane with the subject. The color rendition, lens flare control, aromatic aberration control and contrast is the best of all my lenses except for my other Zeiss lenses. I love how smooth the focus is on the Milvus line. I have shot with a few of the older Distagon lenses and they were smooth and the focus ring stood out a lot more than the one on these lenses. However, I would trade the Distagon focus ring for the weather sealing of the Milvus line any day. They are beautiful to look at and their images are in a class of their own.

[82 mm (Front)] I rated this lens five stars because of the quality construction of the lens and the quality pics the lens produces. The metal construction, smoothness of both focus and changing the aperture settings exudes quality. The lens is a joy to use.