Sigma 135mm F1.4 DG Art

This Sigma prime pairs a 135mm focal length with an F1.4 aperture for full-frame shooting. It suits portraits, indoor events and stage work, where tight framing and extra light both count. Evening recitals and candlelit ceremonies fall inside that scope too. Separate versions fit Sony E and Leica L cameras, so order the mount you shoot.

Introduced in 2025, this lens suits photographers who build a session around one focal length. The main trade-off is size. The large opening comes in a heavy, wide body that you will notice during a long shoot.

The Sony E version weighs 3 lb 2.1 oz (1420 g) and measures 5.41 in (137.5 mm) long. Its 4.4 in (111.7 mm) width also makes it substantial. The L-Mount version differs in weight and length. Both versions accept screw-in filters matching the unusually large 105mm thread.

At 135mm, you can make a tight portrait from several steps away. That distance helps reduce the exaggerated facial proportions caused by placing the camera very close. It can also isolate a speaker or performer, provided your position gives the framing you need. In small rooms, check that you can step back far enough.

As a prime, it offers one view. You change framing by moving your feet or carrying a second lens. In return, you get a very wide aperture at this focal length. Pair it with a shorter prime when you need wider views.

The f/1.4 aperture admits more light than a smaller opening. In a dim venue, you can use that light for a faster shutter speed or lower ISO. Close portraits can have a very thin sharp zone, so place focus carefully. Stop down when more of the face or a group needs to remain clear.

Closest focus is 3.6 ft (110 cm), measured from the sensor, with 0.14x maximum magnification. Use that limit for details when the framing suits. Portrait distance also depends on the face and composition. The aperture has 13 blades.

The design resists dust and splashes, which helps during outdoor portrait sessions. Use cover in persistent rain and keep the lens protected while changing locations.

A water- and oil-repellent coating covers the front glass. It helps fingerprints and water spots wipe away. The broad front surface gives you a large area to keep clean between setups.

There is no built-in stabilization. A camera with body stabilization can help reduce camera shake, while a monopod or tripod offers support for longer sessions. For moving people, choose enough shutter speed for their movement.

The design uses 17 elements in 13 groups, with two aspherical elements and four FLD low-dispersion elements. Aspherical surfaces help correct distortion and spherical aberration. Low-dispersion glass helps reduce coloured fringes along high-contrast edges, such as backlit hair. Internal focusing keeps the barrel length fixed as focus changes.