Voigtlander Ultron 21mm f/1.8 Lens

Voigtlander Ultron 21mm f/1.8 Lens

Voigtlander Ultron 21mm f/1.8 Lens

B&H # VO2118M MFR # BA218M
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Product Highlights

  • Leica M-Mount Lens
  • Aperture Range: f/1.8 to f/22
  • One Aspherical Element
  • Manual Focus Design
  • Minimum Focus Distance: 1.6
  • Built-in Lens Hood
  • Filter Thread: 58mm
  • 10-Blade Diaphragm
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Voigtlander BA218M overview

  • 1Description

Pairing an ultra-wide focal length with a bright maximum aperture, the Ultron 21mm f/1.8 from Voigtlander is a versatile lens designed for M-mount rangefinder cameras. Its expansive field of view is well-suited to architectural and interior subjects while the bright f/1.8 maximum aperture benefits working in low-light conditions. One aspherical element is featured in the optical design to help reduce spherical aberrations in order to produce greater sharpness and clarity throughout the aperture range. The lens also features a manual focus design, which permits working with subjects as close as 1.6' away, and it has a built-in lens hood to shield the front element and minimize lens flare and ghosting.

Fast f/1.8 maximum aperture benefits working in difficult lighting conditions.
One aspherical is featured to control spherical aberrations and distortion for improved sharpness and clarity.
Manual focus design enables a minimum focusing distance of 1.6', and it is rangefinder coupled for accurate focusing to 2.3'.
Built-in, non-removable lens hood helps to prevent lens flare and ghosting for increased contrast and color fidelity when working in strongly lit conditions.
In the Box
Voigtlander Ultron 21mm f/1.8 Lens
  • Front Lens Cap
  • Rear Lens Cap
  • Limited 1-year Warranty
  • Table of Contents
    • 1Description

    Voigtlander BA218M specs

    Focal Length 21mm
    Maximum Aperture f/22
    Minimum Aperture f/1.8
    Camera Mount Type Leica M
    Angle of View 91°
    Minimum Focus Distance 1.6' / 50 cm
    Optical Design 13 Elements in 11 Groups
    Filter Thread 58mm
    Dimensions : 2.7 x L: 3.1" / : 69.0 x L: 78.4 mm
    Weight 14.5 oz / 412.0 g
    Packaging Info
    Package Weight 1.15 lb
    Box Dimensions (LxWxH) 5.3 x 4.5 x 4.5"

    Voigtlander BA218M reviews

    Ultron 21mm f/1.8 Lens is rated 4.3 out of 5 by 15.
    Rated 5 out of 5 by from Nothing Else Compares Let me start off by saying I use this on a Sony A7R with a voigtlander close focus m to e adapter. This lens has blown away all expectations. I own a lot of premium glass like the Canon L glasses and Zeiss lenses and can easily say this lens blows them away because of the sharpness wide open. I've always had to stop my glass down to get desired results but not with the Voigtlander. I included my first shot taken with the glass, it was at night, shot wide open, handheld, Shutterspeed set to 50, ISO 1600, unedited and jpeg not raw. Camera set to Black and white and I used a yellow filter. Even with all of those things working against it, I was able to get a decent shot. The Bokeh is fantastic and the aperture blades give you a perfect starburst effect. It's incredible. Buy it now and never have to worry about owning another super wide range lens (for full frame).
    Date published: 2016-01-16
    Rated 4 out of 5 by from Excellent on Sony A7R Bought the CV 21/1.8 Ultron as smaller wide angle rangefinder lens addition to be used on my full frame Sony A7R camera. The lens is well built, very sharp throughout the f-stops in the corners, no vignetting. Many other wide angle rangefinder lenses give issues on the A7R sensor - this lens doesn't. The lens is fast and allows to capture great photos even in dim light conditions. Only con for me is the fixed lens hood - unfortunately this makes it impossible to use square graduated ND filters.
    Date published: 2014-11-02
    Rated 5 out of 5 by from THE lowlight ultrawide. I jumped on this lens before the A7 even came out. The idea was to get a low light ultrawide for the upcoming A7. After some extensive browsing on-line, this lens seemed to be THE rangefinder ultrawide with the least corner smearing and color shift, except for the Leica WATE, then that one is a f4 lens and a very expensive one at that. Also, I gave up on the rare Olympus OM 21 f2 due to its nervous bokeh and CA caused by its dated design.Luckily my educated guess was correct. This lens is now my go to lens on the A7 and A7r bodies.The lens is built like a tank, with silky smooth focus and precise aperture clicks that would pleasantly surprise anyone coming from a DSLR.Optically it also excels. In the center, it is sharp right from f1.8, though with some visible CA and purple-fringing that need to be stopped down to f2.8 to get rid of. The mid sections are also quite fine, unlike some other rangefinder wide angles which start to get the smearing quite early on. The outer image ring is smeary, becoming usable at f4 on the A7 and f5.6 on the A7r, sharp at f8. The lens has no visible color-shift on the A7 unless shot at infinity into blue skies, where the corners would start to show a slight hue. On the A7r it always color-shifts, except in photos taken at the night sky, where the color-shifts would be hid by the darkness. Compared to my Nikon ais 28mm f2.8 which was a celebrated dslr wide angle, the Voigtlander has better resolution and less color CA in the corners.There's an interesting but not very discussed character of this lens, that's its beautiful sunstars, which start to pop out on strong light sources even at f2.8.The downside is that this lens is rather big and heavy for a rangefinder lens, but that's normal for a 21mm f1.8 made out of metal and glass.More importantly, the built-in non-removable lens hood might be a real pain for those who are used to slide-in filters as it is practically impossible unless you grind the metal lens hood off. I also wish the lens had weather-sealings to go with the A7 and A7r, but then no Leica M to E adapter is weather-sealed yet and the lens still performed flawlessly in icy rains and snow storms during my trip to the South Patagonian Ice Field. Conclusion, at the moment, this is one of the best lowlight ultrawide for the Sony A7 series cameras, maybe even for the Leica M.
    Date published: 2014-09-03
    Rated 5 out of 5 by from amazing lens Using this on a NEX with Leica M adapter. Good glass makes or breaks a shot no matter the camera body. This lens does not disappoint. Very solid build, smooth focus, solid aperture clicks. Excellent in bright or low light. The RAW file output with this setup is usable for print with no post adjustments!
    Date published: 2013-04-10
    Rated 5 out of 5 by from Love this glass Perfect match witch my A7R via Novoflex for night photo, street, landscape, architecture, etc.
    Date published: 2016-03-24
    Rated 3 out of 5 by from Great on center, not at the edges I bought this for the Sony a7r, which is particularly tough with wide angle lenses. Great build, good focus ring and aperture ring feel. It is exceptional in the center even wide open, but it gets dramatically worse out towards the corners. Those corners don't clean up until f/8. It probably does much better on film or on the Leica M. It is still one of the better wide options for the a7r. The Leica WATE is much better but at 4x the price.
    Date published: 2014-03-12
    Rated 4 out of 5 by from I love this lens so much. I shoot with this and an A7. It handles like it was made for this camera body. For people shots, f/1.8 is highly usable and in the context of street photography it's sharp enough for low-light work. Its distortion is negligible and I feel comfortable using it for interior architecture as well. It's not a perfect 5 because it does have a pretty strong vignette until it's stopped down f/8 and sometimes displays color fringing. Both of these are easy to correct in post or by using the Lens Correction App in camera, but it's an extra step either way. It makes up for this in its rich and contrasty color rendition. Also, because this is a rangefinder lens, it bears note that the extreme corners are not as sharp on an A7 body due to the thicker filter stack. But, honestly, unless your primary use for this lens is fine art landscapes, you won't be disappointed. It's a beautiful, compact, and sharp tool. I recommend using it with the Voigtlander Close Focus Adapter if you're using it on an A7 series camera.
    Date published: 2016-12-28
    Rated 5 out of 5 by from Substantial Lens. Very Good Optics. Although I already have a Voightlander 21mm f/4.0 lens purchased several years ago, the excellent review by Sean Reid (Reid Reviews) and my desire for a larger and faster lens prompted me to make this purchase ... that and a sale going on at the time! The first thing I did was to set up my camera indoors on a tripod and compare their optics. The f/1.8 lens, while acceptably sharp fully open, improves at f/2.8 and especially at the same f/4.0 aperture as the smaller lens. I believe, however, that at f/4.0 the edges are sharper with the larger lens. Color and contrast with both are very good. Focus is maintained with change of aperture from its f/1.8 maximum, allowing sharp focus wide open then stopping down for desired depth of field. This is a very substantial lens, much larger and heavier compared with the 15mm f/4.5 and 35mm f/1.7 Voightlander lenses also now in my collection. I don't mind that, because it fits my large hands better than the smaller lens, with control rings more distinct and more widely separated than those crowded in the f/4.0 lens. The aperture ring's half-stops are more positive and the focusing ring is broad and operates smoothly, I also much prefer the abbreviated built-in lens hood, as opposed to a screw-on or clamp-on hood that takes up more room. The question to be answered is whether its increased bulk, weight and additional cost can be justified in light of the very good optics of the smaller 21mm f/4.0 lens. For low light conditions and street shooting the more precise focusing and faster shutter speed favor the larger lens. With the 1.5 crop factor of my Fujiflm X Pro2 with M-adapter, this lens' 35mm equivalence is 33mm, which means it will be used often. For me, all of the above factors make the choice of the f/1.8 very sensible and preferred over its smaller sibling. For others, the smaller size and cost might lead them to choose otherwise. The good thing is that there is no wrong choice here. I gave this lens a 5 star rating for its very good optics, top notch construction and excellent control ring function.
    Date published: 2016-12-26
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