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Revolutionising portraits with the world’s first AF 135mm F1.4.

The Sigma 135mm F1.4 DG | Art is the world’s first 135mm autofocus lens to achieve a maximum aperture of F1.4, delivering exceptional expressive capabilities for portrait photography.

Its unrivalled large bokeh and stunning resolution that renders every detail create an extraordinary sense of depth and dimensionality.

The natural perspective and moderate shooting distance unique to 135mm, combined with the rich bokeh of the bright F1.4 aperture, make the subject stand out and render on an entirely different level compared to conventional 135mm F1.8 lenses.

Built on extensive expertise gained from developing numerous F1.4 prime lenses, this new 135mm lens from Sigma sets a new standard in portrait photography.

The most notable feature of the Sigma 135mm F1.4 DG | Art is its extremely large bokeh. The effective aperture diameter^*1 of the 135mm F1.4 lens produces exceptional bokeh, which is larger than that of the Sigma 105mm F1.4 DG HSM | Art known as “Bokeh Master,” and is comparable to that of the Sigma 200mm F2 DG OS | Sports.

The natural perspective unique to 135mm, together with its overwhelming bokeh, highlights the subject and creates dimensional portraits achievable only with this lens.

*1 The effective aperture diameter is calculated by dividing the focal length by the F-number. It refers to the diameter of the light beam that forms an image at the centre of the image sensor. A larger effective aperture results in a shallower depth of field and more pronounced bokeh.

Optical design optimized to produce the natural bokeh

Thorough correction of chromatic aberration, which is common in telephoto lenses, achieves clear bokeh without colour bleeding.

Dual HLA for fast, precise autofocus

Each of the two focus groups is driven by its own HLA (High-response Linear Actuator), forming a dual HLA system.

By incorporating two distinct types of HLAs, each optimized for the movement range of a focus group, the dual HLA system ensures both the high thrust needed for large-aperture telephoto lenses and fast, precise AF performance. This allows even fleeting expressions and fast-moving subjects to be captured with exceptional reliability.

Lens construction	17 elements in 13 groups
Angle of view	18.2°
Number of diaphragm blades	13 (rounded diaphragm)
Minimum aperture	F16
Minimum focusing distance	110cm
Maximum magnification ratio	1:6.9
Filter thread	105mm
Dimensions (diameter x length)	φ111.7mm x 135.5mm
Weight	1430g

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