The ring itself also has good resistance to it and includes distance markings and macro magnification marks as well. What we do like about the ring aside from its interesting texture which is easy to grip is the fact that unlike almost any other Sony E-mount lens it has physical hard stops which are great for video work. We are not big fans and prefer the more traditional AF/MF switch. The ring has a push-pull focus mechanism. The Sony has a single wide focus ring with texture on it which is different than any other Sony lens we used. The Sigma 90mm f/2.8 is a very compact lens When it comes to weight the Sony tips the scale at over 670g (23oz) with the hood while the Sigma weighs in at just over half at around 350g (12oz). The Sigma is a surprisingly compact lens at about half the length of the Sony or just over 7cm (3″) long with the hood adding another 4cm (1.5″) or so. The Sony is a fairly long lens at just over 14cm (5.5″) or over 19cm (7.5″) with the hood. Like all of the rest of Sigma’s I line of lenses the 90mm is fully metal (magnesium) and feels really robust and great in the hand. We had the metal thread in the front of the lens come off but this was fixed without charge some time ago even though the lens was no longer under warranty. The Sony is made from metal and feels very robust. It has a more conventional multi-layer coating. The Sigma has a less complex optical design with 11 elements in 10 groups including no less than 5 SLD elements and a single aspherical element. It also has special Nano AR Coating for reduced reflections and flare. The Sony has a relatively complex design including 15 elements in 11 groups including two ED and one super ED elements, as well as a single aspherical element. the Voigtländer 65mm F2 and even before that in 2019 with our review of the Sigma 45mm F2.8 DG DN lens. The new Sigma 90mm DG DN f/2.8 is part of the company’s compact, high-performance, and beautifully made I series of lenses which we looked at in the Sigma 65mm F2 DG DN vs. Although it is a G series lens it has a different design than most G lenses (or other Sony lenses in general for this matter) and it can serve as both a full 1:1 telephoto macro lens and as a great portrait lens. We had our Sony 90mm macro for several years and it is a fantastic lens. The Sony 90mm f/2.8 stabilized macro lens and the new Sigma 90mm f/2.8 lens. We are starting 2022 with a test of two very different lenses with a similar focal length and aperture.
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