In addition to prioritising portability, SIGMA’s optical engineers have introduced a new combination of coatingsand structural elements that make this standard zoom well-equipped for use in a wide range of shootingenvironments. Likewise, the latest production and manufacturing techniques were employed to ensureexceptionally high build quality. On cameras where lens aberration correction is controlled with ‘ON’ or ‘OFF’ in the camera menu, please set all aberration correction functions to ‘ON'(AUTO). Now for focusing on the Sony A1 using a central area and single AFS mode at 70mm f2.8 and you can see there’s a minor contrast-based wobble at each focus-pull to confirm, but the process is still fairly swift and quiet too. Switching the A1 to Continuous AF mode though forces the body to use phase-detect AF alone which here is refocusing noticeably faster than before, and in my tests didn’t reduce accuracy. So it can be worth experimenting to find the best mode.

L-Mount Lenses for Leica, Panasonic, and Sigma The Best L-Mount Lenses for Leica, Panasonic, and Sigma

I used the Panasonic S1 and had the Sigma 28-70mm f2.8 set at the 31mm focal length. This was taken at f8 and 160 ISO around the WTC area in Manhattan. Sigma 28-70mm f2.8 DG DN Contemporary Lens Bokeh:

Sigma 24-70DN Build, Design and Handling

The 28-70mm f2.8 DG DN Contemporary lens is superb because it is so versatile. This is a lens that has the optics to deliver you professional quality results yet at the same time, it’s small and light enough that you can use it for more casual activities like taking it on vacation or outings with friends. It also has the focal length range that is great for all types of photography, and a large enough maximum aperture that can help you be more creative, and give you more flexibility in different conditions. Honestly, this is the type of lens that we need more of in the L mount system, and I’m very happy to see Sigma coming out with them. If you’re trying to build a compact system, and are currently looking for lenses that not only are optically exceptional but also compact and versatile, this zoom should definitely be on your list of lenses to consider. As for the autofocus, the 28-70mm f2.8 DG DN Contemporary lens uses a stepping motor that is definitely responsive. It’s plenty fast, and accurate. It’s also near silent. The camera usually plays a part in autofocus performance, and as I mentioned earlier, I was testing this lens with both the S1, and the fp L. It works great on both cameras. Another benefit to the weight of this lens is that you can shoot for long periods of time without your wrist or arm aching, which is ideal if you predominantly want it for video.

Sigma teases its upcoming sports focused 70-200mm F2.8 for L Sigma teases its upcoming sports focused 70-200mm F2.8 for L

The biggest reason for investing in the Sigma 28-70mm f/2.8 is that it's a much smaller, lighter and cheaper alternative to native-branded lenses. It's still capable of producing really high-quality images with sharp in-focus areas and soft, blurred, out-of-focus areas. Unlike some of the more expensive brands it doesn't have any lens stabilization, but if you're shooting on something like the Sony A7R IV the in-body stabilization makes up for it.In this photo, I used the Sigma fp L and the 28-70mm f2.8. The focal length used was 33.5mm. The settings were f2.8 and 100 ISO. Compatible with lens-based optical correction Function available onsupported cameras only. Available corrections may vary depending on the camera model. Design-wise, the lens is weather-sealed and also uses water repellent coatings at the front and rear glass. It’s a bit of a beast to carry around, though, at 2.5 pounds. There’s no getting around the fact that that red dot logo means the lens costs more than some used cars. And while it manages to do the seemingly impossible and offer prime-like image quality in a zoom, few will want to drop that much cash on a lens, especially now that the L-Mount alliance means there are more options than ever before. And since it is so lightweight, balance is very good. Regardless of the mount variant you choose, it shouldn't feel front-heavy on any body you might want to pair it with.