Leica Super-Vario-ELMAR-SL 16-35mm F/3.5-4.5 ASPH.

Leica released this wide zoom in 2018 for full-frame L-mount cameras, and it remains in production today. The 16–35mm span suits landscape, architecture and interior photography, where you often cannot step back far enough to fit the scene. Travel and real-estate shooters find the same fit.

The main trade-off is light gathering. The aperture opens to f/3.5 at 16mm and slows to f/4.5 at 35mm, and there is no built-in stabilisation. Most wide-angle work stops the lens down anyway, so the trade costs little in daylight. Dim handheld scenes will ask more of your ISO.

This lens weighs 2 lb 2.9 oz (990 g). The barrel measures 3.46 in (88 mm) across and 4.84 in (123 mm) long.

Screw-in filters thread straight onto the 82mm front. A polariser for skies and reflections is a common choice here, and the standard thread keeps filter buying simple.

At 16mm the lens fits whole rooms, tall buildings and broad skies into one frame. That makes it a natural choice for architecture and interiors, where walls limit your movement. The 35mm end gives a gentler wide view, useful for environmental portraits or a tighter landscape.

The variable f/3.5–4.5 aperture favours depth of field over speed. Stopped down to f/8, the lens can hold foreground and horizon sharp together, which suits landscape framing. Wide open, f/3.5 at 16mm is modest for night-sky work, so expect longer exposures or a higher ISO.

Close focus at 0.8 ft (25 cm) lets you place a rock or flower near the camera. The wide view still keeps the background in the frame behind it. Maximum magnification reaches 0.27x, so a small subject can fill a noticeable part of the frame.

Nine aperture blades help keep out-of-focus highlights round when you stop down, which smooths water and foliage behind a foreground subject.

Weather sealing protects the joins against dust and moisture. That protection matters for landscape and outdoor architecture work, where drizzle and dust are common. You can keep shooting through sea spray with less worry.

There is no built-in image stabilisation. At 16mm, the wide view tolerates slower handheld shutter speeds, so the loss is small for stills. Video and low-light shooters should plan on a tripod or a higher ISO. There is also no fluorine coating, so the front element needs more careful cleaning when it picks up spray or smears.

The barrel offers no zoom lock either. This feature set scores 52/100 on our specification scale.

The design uses aspherical elements, whose shaped surfaces help correct distortion and spherical aberration. For architecture, that matters: distortion can bend straight wall and horizon lines.

Internal focusing moves elements inside the barrel, so overall length stays constant while you focus. The layout also carries three listed measures against colour fringing. Those coloured edges often show on high-contrast scenes, such as branches against a bright sky.