Battle of the best 20/21s: Sigma 20/1.4 Art vs Zeiss 2.8/21 Loxia

20 art 21 loxia
Images courtesy respective manufacturers, composited to roughly correct relative size – my samples had to return home before I got a chance to put them together in the studio for th usual product shoot, and I’m still awaiting delivery of my own personal lenses.

I’ve recently had a chance to shoot a) the best two wide angles available at the moment, and b) shoot them against each other on the same camera body. This is not a direct comparison. There are however limitations to the testing – very limited time* and no way to mount one without. Furthermore, the lenses were both final preproduction prototypes, which could mean they are either good samples because they’re hand adjusted…or there’s some variance, because…they’re hand adjusted. Tests were performed on a Sony A7RII body mounted on a Arca-Swiss P0 head and RRS24L tripod – i.e. sturdy – and released via IR remote. The adaptor used was a Metabones Nikon G-NEX model, tested and found to be good with various other lenses including the Zeiss 28 Otus. However, it’s worth noting that the shorter the focal length, the more sensitive a lens is to small skew because only very small movements are needed to change effective focusing distance. I’m sure many other limitations in methodology can be found, but remember we are aiming for the best we can do in field conditions without giving one lens or the other a sensor-based advantage. Observations must therefore be taken as preliminary.

*Literally, about an hour after dark during a recent visit to Sigma HQ in Aizu, Japan. Crops are 100% where stated; I will not be posting full size images because IP rights sadly don’t seem to mean a thing online.

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News: Zeiss Otus 1.4/28 APO-Distagon, 2.8/21 Loxia, RX1RII, 19 October

PI_0124-2015_Otus_Family
Image courtesy Zeiss

The cover was lifted on the new Otus yesterday – a 28mm f1.4, as expected, and a 21mm f2.8 Loxia a couple of days earlier. The Otus is a 16/13 Distagon design and uses quite a large array of exotic glass and aspherical elements; it’s also quite large (95mm front thread) and has significant weight – but then again, what do you expect from an APO-designated f1.4 wide? From my experience with it so far, it is once again proving to be the reference lens in this focal length. Delivery is expected to be in 2Q 2016.

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A visit to Zeiss and thoughts on the Milvus line

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The mothership

I was fortunate enough to spend the last three days at Zeiss with Lloyd Chambers (update: his blog entry is here) – with a level of access that I suspect that has never been granted before to independent external parties. They were gracious and first class hosts – I don’t think I’ve had that many types of non-alcohlic beer before. We asked every question we could think of and more, and received answers which we had never expected and at a level of depth that has left me deeply, deeply impressed with what the lens team is doing out in Oberkochen. This may seem like a strange way to talk about the new announcement, but bear with me for while; there is method to the madness. 🙂

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