Sigma 135mm F1.4 DG | Art, world’s first 135mm autofocus lens to achieve a maximum aperture of F1.4

Revolutionizing 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 unrivaled 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.

*1 As of September 2025, by Sigma.
 

Key Features

Large bokeh for powerful visual expression

Unmatched large bokeh opens up new expressive possibilities

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 center 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 color bleeding.
The design also minimizes vignetting, rendering natural, near-circular
bokeh even at the edges, fully utilizing the wide-open aperture.

Sigma’s craftsmanship behind the beautiful bokeh

A 13-blade diaphragm maintains a circular bokeh shape, while exceptional
precision in aspherical lens processing further enhances its smoothness.
This beautiful, natural bokeh is the result of Sigma’s know-how gained
through development of F1.4 prime lenses over many years and the
advanced manufacturing technology cultivated at its Aizu factory.

Precision optics for exquisite portrait detail

Clear subject detail even at maximum aperture

Four large FLD glass elements are positioned, along with strategically
placed high-dispersion glass elements to thoroughly suppress axial
chromatic aberration, which tends to be more pronounced in large-aperture
telephoto lenses. As a result, the lens delivers crisp subject detail even when
shot wide open, making full use of the exceptionally shallow depth of field
unique to a 135mm F1.4.

Floating focus system for consistent sharpness

A floating focus system moves the two focus lens groups independently,
ensuring consistently high resolution across the entire focus range.
Designed to minimize flare and ghosting
Flare and ghosting, which reduce image quality, are addressed under all
conditions of incident light, based on the most advanced simulation
technology and Sigma’s Super Multi-Layer Coating. High backlight
resistance enables clear and sharp images under any lighting conditions.

Fast, accurate autofocus to capture fleeting expressions

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.

A wealth of functions for professional use and excellent build quality

Various shooting assist functions

The lens is equipped with an AFL button in two locations, which can be
assigned to a range of functions via the menu on selected cameras. In
addition to the aperture ring, the lens is equipped with an aperture ring lock
switch and a click switch to turn the click on and off.

Dust- and splash-resistant structure*1 and water- and oil-repellent
coating

In addition to a dust- and splash-resistant structure, the front element of the
lens features a water- and oil-repellent coating, allowing photographers to
shoot without concerns even in harsh outdoor environments.

*1 The structure is designed to be dust- and splash- resistant, but not waterproof. Be careful not to bring the lens in contact with a large amount of water. Water inside the lens may cause major damage and even render the lens unrepairable.

Excellent build quality of Sigma’s Art line specifications

Metal components such as aluminum and magnesium alloys are combined
with engineering plastics like TSC*2, strategically placed throughout the
construction. This balances the durability required to support the optical
system of a large-diameter lens with the lightweight design necessary for
comfortable handling. The Art line offers remarkable rigidity, durability, and
build quality for long-term reliability as a tool of expression.

*2 TSC (Thermally Stable Composite) is a type of polycarbonate with a thermal expansion rate similar to that of aluminium. It has a high affinity to metal parts, which contributes to high quality product manufacturing.

Arca-Swiss compatible tripod socket for long studio shoots

The lens comes with a lightweight yet robust tripod socket made of
magnesium alloy, compatible with Arca-Swiss clamps. It provides excellent
stability during studio sessions and extended shooting, helping
photographers stay focused on their creative expression. The tripod socket
is also removable and can be replaced with the supplied protective cover.

Supplied hood with a button-type locking mechanism

The supplied hood is equipped with a button-type locking mechanism for
secure attachment and removal. It is constructed from CFRP, a
polycarbonate material reinforced with carbon fiber, making it both
lightweight and durable.

Advanced Feature Set 

● HLA (High-response Linear Actuator)
● Water- and oil-repellent coating
● Aperture ring
● Aperture ring click switch
● Aperture ring lock switch
● AFL button (2 locations) *1
● Focus mode switch
● Dust- and splash-resistant structure
● Mount Conversion Service available
● Support for switching between linear and non-linear focus ring
settings (for L-Mount only*2)
● Compatible with USB Dock UD-11 (sold separately / for L-Mount
only)
● Every single lens undergoes Sigma’s proprietary MTF measuring
system

*1 Assignment of functions is limited to supported cameras and assignable functions vary depending on the camera.
*2 Only on supported cameras.

MAIN SPECIFICATIONS (L-Mount)

Lens construction: 17 elements in 13 groups (4 FLD, 2 aspherical elements)
Angle of View: 18.2°
Number of Diaphragm Blades : 13 (Rounded Diaphragm)
Minimum Aperture : F16
Minimum Focusing Distance: 110cm / 43.4in.
Maximum Magnification Ratio: 1:6.9
Filter Size: φ105mm
Maximum Diameter x Length: φ111.7mm x 135.5mm / φ4.4in. x 5.3in.
Weight: 1,430g / 50.4oz.

Over TIPA

Op dit moment zijn circa 30 publicaties uit Europa en andere delen van de wereld lid van de TIPA (Technical Image Press Association). De hoofdredacteuren en technische redacteuren van deze publicaties vormen samen deze organisatie. Sinds 1991 reikt TIPA onderscheidingen uit in verschillende sectoren binnen de imaging-industrie. In 2018 werd de naam van de onderscheiding gewijzigd in de TIPA World Awards om de huidige samenstelling van de organisatie, haar publicaties én de wereldwijde invloed van de TIPA-onderscheidingen te weerspiegelen.