Sigma 105mm F/2.8 DG DN Macro | A

Macro lens • Digital era

DG The lens is designed for 35mm full-frame digital cameras but can be also used on APS-C digital cameras.
DN The lens is optimized for cameras with a short flange back distance.
MACRO Macro lens. Designed specially for shooting close-ups of small subjects but can be also used in other genres of photography, not necessarily requiring focusing at close distances.
| A Belongs to the Art series lenses.

Features highlight

Fast
1 SLD
9 blades
Macro 1:1
IF
HSM
Focus limiter
DP/WR
FC

Specification

Production details
Announced:September 2020
Production status:In production
Production type:Mass production
Original name:SIGMA 105mm 1:2.8 DG DN MACRO A
Optical design
Focal length:105mm
Speed:F/2.8
Maximum format:35mm full frame
Mount:Leica L
Sony E
Diagonal angle of view:23.3° (35mm full frame)
15.3° (Leica L APS-C)
15.3° (Sony E APS-C)
Lens construction:17 elements - 12 groups
1 SLD
Diaphragm mechanism
Number of blades:9
Focusing
Closest focusing distance:0.295m
Closest working distance:0.14m
Maximum magnification ratio:1:1 at the closest focusing distance
Focusing method:Internal focusing (IF)
Focusing modes:Autofocus, manual focus
Manual focus control:Focusing ring
Autofocus motor:Hyper Sonic Motor
Focus mode selector:AF/MF
Manual focus override in autofocus mode:Determined by the camera
Focusing distance range limiter:FULL;0.295-0.5;0.5-
Optical Stabilizer (OS)
Built-in OS:-
Physical characteristics
Weight:710g (Sony E)
715g (Leica L)
Maximum diameter x Length:⌀74×135.6mm (Sony E)
⌀74×133.6mm (Leica L)
Weather sealing:Dust-proof and water-resistant barrel
Fluorine coating:Front element
Accessories
Filters:Screw-type 62mm
Lens hood:Bayonet-type LH653-01 (round)

Manufacturer description #1

Sigma Announces the 105mm F2.8 DG DN Macro | Art Lens, Redefining Mirrorless Macro Performance

  • Life-sized magnification (1:1) short tele macro for full-frame mirrorless
  • Dust and Splash-proof construction
  • Completely new optical formula for exceptional sharpness and pleasing bokeh
  • Hypersonic Motor optimized for both contrast and phase detection autofocus
  • Clicked and de-clicked aperture ring with Aperture Ring Lock Switch
  • Focus Limiter switch for macro, portrait, or full range autofocus
  • Available in L-Mount and Sony E-Mount

Ronkonkoma, NY – September 30, 2020 – The SIGMA 105mm F2.8 DG DN Macro | Art lens is the first prime macro lens designed by Sigma exclusively for full-frame mirrorless cameras, as the DG DN in the name indicates. Announced today by Sigma Corporation, this lens offers 1:1 magnification (life-sized) at a 5.5-inch working distance with internal focusing, and it is available in Sony E-Mount and L-Mount formats.

Exceptional focal plane sharpness with minimal aberration is achieved through a new optical formula featuring 17 elements in 12 groups with one SLD element. The lens design also features excellent peripheral brightness for pleasing bokeh, complemented by nine rounded aperture blades. The L-Mount version of the 105mm F2.8 DG DN Macro | Art lens is compatible with the SIGMA Teleconverter TC-1411 and TC-2011, increasing the maximum magnification to 1.4:1 and 2:1, respectively.

"In order to capture the minute details of small subjects, macro lenses must meet an extremely high standard of optical precision, and the new SIGMA 105mm F2.8 DG DN Macro | Art lens truly delivers," says Mark Amir-Hamzeh, President of Sigma Corporation of America. "Whether you are shooting images of flowers, insects or just interesting objects around the house, the sharpness, bokeh quality and practical functionality of this lens will exceed the expectations of professionals and hobbyists alike."

The Hypersonic Motor delivers smooth, quiet, confident autofocus in both close-up and portrait-distance settings, and the three-zone focus limiter switch allows for even swifter response when focusing exclusively in either the macro or more distant range.

The Sigma Art line has been consistently redefining both imaging excellence and satisfying handfeel, and this new lens continues that journey. The dust and splash-proof design, aluminum and TSC (Thermally Stable Composite) construction, a brass bayonet mount, plus well-damped switches and rings demonstrate the level of build quality that the Art name represents. The Aperture Ring can be clicked or de-clicked by flick of a switch, and the lens also includes an Aperture Ring Lock Switch function. Additional benefits include a programmable AFL button on the lens barrel, and compatibility with face and eye-detection autofocus.

Manufacturer description #2

Mid-telephoto macro lenses give photographers a boost to creativity and a versatile working distance, which makes the lenses a favorite among professionals as part of their basic gear. Introduced as the first macro lens for mirrorless cameras in the Art line of lenses for mirrorless cameras, the 105mm F2.8 DG DN MACRO | Art packs the highest level of performance expected of a mid-telephoto macro lens into its body, from its superb optical performance to excellent build quality.

Beyond being a high-spec macro lens that excels in a wide range of settings, the SIGMA 105mm F2.8 DG DN MACRO | Art is ideal for macro shooting or portraits. It can also give photographers an opportunity to rediscover a new way of looking at or enjoying things such as unexpected beauty or something precious in everyday life through its perspective that is unique to a macro lens. It provides performance that goes far beyond the expectation or imagination of what a "classic mid-telephoto macro lens" can be.

The latest optical design of the 105mm F2.8 DG DN MACRO | Art ensures exceptional sharpness at all shooting distances from extreme close-up, which is crucial in macro shooting, all the way up to infinity. In addition, its aberration correction places a particular focus on longitudinal chromatic aberration which cannot be handled by the in-camera aberration correction. The superior optical design produces clear images with both delicate rendering and free of color bleeding.

Bokeh was one of the focuses in the 105mm F2.8 DG DN MACRO | Art design, which figures largely in mid-telephoto shooting. The ample volume of peripheral light helps create beautiful bokeh circles, while natural bokeh effect in the background, as well as foreground, gives more flexibility to photographic expressions.

Furthermore, when equipped with the TC-1411 (1.4x) or TC-2011 (2.0x), SIGMA's latest models of teleconverters designed exclusively for the use with L-Mount lenses, it allows photographers to shoot macro at even higher macro magnifications while keeping the working distance.

The 105mm F2.8 DG DN MACRO | Art has achieved everything that is required of a mid-telephoto macro lens at the highest levels.

The SIGMA Art line lenses prioritize optical performance above all else in their design. This applies to the 105mm F2.8 DG DN MACRO | Art, which produces outstanding rendering performance from the center of the frame all the way up to the edges. It excellently handles comatic aberration, which often happens at the edges. On the other hand, its abilities to minimize ghosting and flare, which have been validated through rigorous testing from the early stages of its development, ensures that it performs well in backlit conditions.

On top of optimization for the latest functionalities, such as face/eye detection AF, which is something mirrorless camera systems do well, it incorporates a powerful Hyper-Sonic Motor (HSM) in its focus motor system to achieve high-precision, quiet AF operation.

All of these elements are brought to life using advanced production technology at the Aizu Factory, SIGMA's only production site, giving the 105mm F2.8 DG DN MACRO | Art the highest levels of performance worthy of the SIGMA Art line.

On its body, the 105mm F2.8 DG DN MACRO | Art features a Focus Mode Switch, Focus limiter setting which comes in handy during macro shooting, and the AFL button *1 to which users may assign select functions. The Aperture ring, which is designed to help users work intuitively, has an Aperture ring click switch to turn ON or OFF the clicking sound that isn’t required by some users when shooting macro. It also comes with a Aperture ring lock switch *2 for a ring lock system. Its enhanced functions allow users to customize their shooting operations in accordance with their shooting styles.

*1 Limited to compatible cameras. Also, the functions depend on the camera.

*2 When turned ON at the position A, the iris ring is locked at A. When turned ON at a position other than A, it is locked within the range between the maximum to minimum apertures and will not engage at the position A.

The lens also has a dust- and splash-proof structure with a water- and oil-repellent coating, which is built to handle all manner of shooting conditions. The rings and switches, meanwhile, have a build quality that is superb in terms of durability, as well as how they work and how they feel.

With levels of user-friendliness, adaptability to the environment, and smoothness of operation that are designed for professional uses, the 105mm F2.8 DG DN MACRO | Art pushes the boundaries for photographers and gives them wider creative possibilities.

Typical application

portraits, travel, macrophotography and product photography

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35mm full frame

43.27 24 36
  • Dimensions: 36 × 24mm
  • Aspect ratio: 3:2
  • Diagonal: 43.27mm

Travellers' choice

Note

Among autofocus lenses designed for 35mm full-frame mirrorless cameras only. Speed of standard and telephoto lenses is taken into account.

Professional lens (Top class)

One of the best short telephoto macro primes

According to lens-db.com; among lenses designed for the same maximum format and mount.

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Quality control issues

The manufacturer of this lens does not provide adequate quality control. If you do decide to purchase this lens, do not order it online, but choose the best copy available in the store. In any case, there may also be problems with the build quality, and warranty repairs can take months.

Image stabilizer

A technology used for reducing or even eliminating the effects of camera shake. Gyro sensors inside the lens detect camera shake and pass the data to a microcomputer. Then an image stabilization group of elements controlled by the microcomputer moves inside the lens and compensates camera shake in order to keep the image static on the imaging sensor or film.

The technology allows to increase the shutter speed by several stops and shoot handheld in such lighting conditions and at such focal lengths where without image stabilizer you have to use tripod, decrease the shutter speed and/or increase the ISO setting which can lead to blurry and noisy images.

Hyper Sonic Motor

Sorry, no additional information is available.

Hyper Sonic Motor

Sorry, no additional information is available.

Focusing distance range limiter

The lens features focusing distance range limiter which allows to choose between the following focusing distance ranges:

FULLFull range of focusing distances.
0.295m - 0.5mRange of focusing distances suitable for shooting nearby subjects.
0.5m - ∞Range of focusing distances suitable for shooting distant subjects.

By setting the suitable focusing distance range, the actual autofocusing time can be shorter.

AF/MF

AFAutofocus mode.
MFManual focus mode.

Aspherical elements

Aspherical elements (ASPH, XA, XGM) are used in wide-angle lenses for correction of distortion and in large-aperture lenses for correction of spherical aberration, astigmatism and coma, thus ensuring excellent sharpness and contrast even at fully open aperture. The effect of the aspherical element is determined by its position within the optical formula: the more the aspherical element moves away from the aperture stop, the more it influences distortion; close to the aperture stop it can be particularly used to correct spherical aberration. Aspherical element can substitute one or several regular spherical elements to achieve similar or better optical results, which allows to develop more compact and lightweight lenses.

Use of aspherical elements has its downsides: it leads to non-uniform rendering of out-of-focus highlights. This effect usually appears as "onion-like" texture of concentric rings or "wooly-like" texture and is caused by very slight defects in the surface of aspherical element. It is difficult to predict such effect, but usually it occurs when the highlights are small enough and far enough out of focus.

Low dispersion elements

Low dispersion elements (ED, LD, SD, UD etc) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture. This type of glass exhibits low refractive index, low dispersion, and exceptional partial dispersion characteristics compared to standard optical glass. Two lenses made of low dispersion glass offer almost the same performance as one fluorite lens.

Low dispersion elements

Low dispersion elements (ED, LD, SD, UD etc) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture. This type of glass exhibits low refractive index, low dispersion, and exceptional partial dispersion characteristics compared to standard optical glass. Two lenses made of low dispersion glass offer almost the same performance as one fluorite lens.

Canon's Super UD, Nikon's Super ED, Pentax' Super ED, Sigma's FLD ("F" Low Dispersion), Sony' Super ED and Tamron's XLD glasses are the highest level low dispersion glasses available with extremely high light transmission. These optical glasses have a performance equal to fluorite glass.

High-refraction low-dispersion elements

High-refraction low-dispersion elements (HLD) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture.

High Index, High Dispersion elements

High Index, High Dispersion elements (HID) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture.

Anomalous partial dispersion elements

Anomalous partial dispersion elements (AD) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture.

Fluorite elements

Synthetic fluorite elements (FL) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture. Compared with optical glass, fluorite lenses have a considerably lower refraction index, low dispersion and extraordinary partial dispersion, and high transmission of infrared and ultraviolet light. They are also significantly lighter than optical glass.

According to Nikon, fluorite easily cracks and is sensitive to temperature changes that can adversely affect focusing by altering the lens' refractive index. To avoid this, Canon, as the manufacturer most widely using fluorite in its telephoto lenses, never uses fluorite in the front and rear lens elements, and the white coating is applied to the lens barrels to reflect light and prevent the lens from overheating.

Short-wavelength refractive elements

High and specialized-dispersion elements (SR) refract light with wavelengths shorter than that of blue to achieve highly precise chromatic aberration compensation. This technology also results in smaller and lighter lenses.

Blue Spectrum Refractive Optics

Organic Blue Spectrum Refractive Optics material (BR Optics) placed between convex and concave elements made from conventional optical glass provides more efficient correction of longitudinal chromatic aberrations in comparison with conventional technology.

Diffraction elements

Diffraction elements (DO, PF) cancel chromatic aberrations at various wavelengths. This technology results in smaller and lighter lenses in comparison with traditional designs with no compromise in image quality.

High refractive index elements

High refractive index elements (HR, HRI, XR etc) minimize field curvature and spherical aberration. High refractive index element can substitute one or several regular elements to achieve similar or better optical results, which allows to develop more compact and lightweight lenses.

Apodization element

Apodization element (APD) is in fact a radial gradient filter. It practically does not change the characteristics of light beam passing through its central part but absorbs the light at the periphery. It sort of softens the edges of the aperture making the transition from foreground to background zone very smooth and results in very attractive, natural looking and silky smooth bokeh.

Original name

Lens name as indicated on the lens barrel (usually on the front ring). With lenses from film era, may vary slightly from batch to batch.

Format

Format refers to the shape and size of film or image sensor.

35mm is the common name of the 36x24mm film format or image sensor format. It has an aspect ratio of 3:2, and a diagonal measurement of approximately 43mm. The name originates with the total width of the 135 film which was the primary medium of the format prior to the invention of the full frame digital SLR. Historically the 35mm format was sometimes called small format to distinguish it from the medium and large formats.

APS-C is an image sensor format approximately equivalent in size to the film negatives of 25.1x16.7mm with an aspect ratio of 3:2.

Medium format is a film format or image sensor format larger than 36x24mm (35mm) but smaller than 4x5in (large format).

Angle of view

Angle of view describes the angular extent of a given scene that is imaged by a camera. It is used interchangeably with the more general term field of view.

As the focal length changes, the angle of view also changes. The shorter the focal length (eg 18mm), the wider the angle of view. Conversely, the longer the focal length (eg 55mm), the smaller the angle of view.

A camera's angle of view depends not only on the lens, but also on the sensor. Imaging sensors are sometimes smaller than 35mm film frame, and this causes the lens to have a narrower angle of view than with 35mm film, by a certain factor for each sensor (called the crop factor).

This website does not use the angles of view provided by lens manufacturers, but calculates them automatically by the following formula: 114.6 * arctan (21.622 / CF * FL),

where:

CF – crop-factor of a sensor,
FL – focal length of a lens.

Mount

A lens mount is an interface — mechanical and often also electrical — between a camera body and a lens.

A lens mount may be a screw-threaded type, a bayonet-type, or a breech-lock type. Modern camera lens mounts are of the bayonet type, because the bayonet mechanism precisely aligns mechanical and electrical features between lens and body, unlike screw-threaded mounts.

Lens mounts of competing manufacturers (Canon, Nikon, Pentax, Sony etc.) are always incompatible. In addition to the mechanical and electrical interface variations, the flange focal distance from the lens mount to the film or sensor can also be different.

Lens construction

Lens construction – a specific arrangement of elements and groups that make up the optical design, including type and size of elements, type of used materials etc.

Element - an individual piece of glass which makes up one component of a photographic lens. Photographic lenses are nearly always built up of multiple such elements.

Group – a cemented together pieces of glass which form a single unit or an individual piece of glass. The advantage is that there is no glass-air surfaces between cemented together pieces of glass, which reduces reflections.

Flange focal distance

The flange focal distance (FFD), sometimes called the "flange back", is the distance from the mechanical rear end surface of the lens mount to the focal plane.

Focal length

The focal length is the factor that determines the size of the image reproduced on the focal plane, picture angle which covers the area of the subject to be photographed, depth of field, etc.

Speed

The largest opening or stop at which a lens can be used is referred to as the speed of the lens. The larger the maximum aperture is, the faster the lens is considered to be. Lenses that offer a large maximum aperture are commonly referred to as fast lenses, and lenses with smaller maximum aperture are regarded as slow.

In low-light situations, having a wider maximum aperture means that you can shoot at a faster shutter speed or work at a lower ISO, or both.

Closest focusing distance

The minimum distance from the focal plane (film or sensor) to the subject where the lens is still able to focus.

Closest working distance

The distance from the front edge of the lens to the subject at the maximum magnification.

Magnification ratio

Determines how large the subject will appear in the final image. For example, a magnification ratio of 1:1 means that the image of the subject formed on the film or sensor will be the same size as the subject in real life. For this reason, a 1:1 ratio is often called "life-size".

Manual focus override in autofocus mode

Allows to perform final focusing manually after the camera has locked the focus automatically. Note that you don't have to switch camera and/or lens to manual focus mode.

Manual focus override in autofocus mode

Allows to perform final focusing manually after the camera has locked the focus automatically. Note that you don't have to switch camera and/or lens to manual focus mode.

Electronic manual focus override is performed in the following way: half-press the shutter button, wait until the camera has finished the autofocusing and then focus manually without releasing the shutter button using the focusing ring.

Electromagnetic diaphragm control system

Provides highly accurate diaphragm control and stable auto exposure performance during continuous shooting.

Convex protruding front element

The convex front element protrudes from the lens barrel, making it impossible to use filters.

Fixed focus

There is no helicoid in this lens and everything is in focus from the closest focusing distance to infinity.

Overall linear extension

The entire lens optical system moves straight backward and forward when focusing is carried out. This is the simplest type of focusing used mainly in wide-angle and standard prime lenses. It has the advantage of introducing relatively little change in aberrations with respect to change in focusing distance. With telephoto and super telephoto lenses this method becomes less beneficial in terms of operability because of the increased size and weight of the lens system.

Front group linear extension

The rear group remains fixed and only the front group moves straight backward and forward during focusing. This method is primarily used in zoom lenses and allows to design comparatively simple lens construction, but also places restrictions on zoom magnification and size reduction.

Front group rotational extension

The lens barrel section holding the front lens group rotates to move the front group backward and forward during focusing. This method of focusing is also used only in zoom lenses.

Internal focusing (IF)

Focusing is performed by moving one or more lens groups positioned between the front lens group and the diaphragm.

Methods of internal and rear focusing have the following advantages:

Rear focusing (RF)

Focusing is performed by moving one or more lens groups positioned behind the diaphragm.

Methods of internal and rear focusing have the following advantages:

Number of blades

As a general rule, the more blades that are used to create the aperture opening in the lens, the rounder the out-of-focus highlights will be.

Some lenses are designed with curved diaphragm blades, so the roundness of the aperture comes not from the number of blades, but from their shape. However, the fewer blades the diaphragm has, the more difficult it is to form a circle, regardless of rounded edges.

At maximum aperture, the opening will be circular regardless of the number of blades.

Weight

Excluding case or pouch, caps and other detachable accessories (lens hood, close-up adapter, tripod adapter etc.).

Maximum diameter x Length

Excluding case or pouch, caps and other detachable accessories (lens hood, close-up adapter, tripod adapter etc.).

For lenses with collapsible design, the length is indicated for the working (retracted) state.

Weather sealing

A rubber material which is inserted in between each externally exposed part (manual focus and zoom rings, buttons, switch panels etc.) to ensure it is properly sealed against dust and moisture.

Lenses that accept front mounted filters typically do not have gaskets behind the filter mount. It is recommended to use a filter for complete weather resistance when desired.

Fluorine coating

Helps keep lenses clean by reducing the possibility of dust and dirt adhering to the lens and by facilitating cleaning should the need arise. Applied to the outer surface of the front and/or rear lens elements over multi-coatings.

Filters

Lens filters are accessories that can protect lenses from dirt and damage, enhance colors, minimize glare and reflections, and add creative effects to images.

Lens hood

A lens hood or lens shade is a device used on the end of a lens to block the sun or other light source in order to prevent glare and lens flare. Flare occurs when stray light strikes the front element of a lens and then bounces around within the lens. This stray light often comes from very bright light sources, such as the sun, bright studio lights, or a bright white background.

The geometry of the lens hood can vary from a plain cylindrical or conical section to a more complex shape, sometimes called a petal, tulip, or flower hood. This allows the lens hood to block stray light with the higher portions of the lens hood, while allowing more light into the corners of the image through the lowered portions of the hood.

Lens hoods are more prominent in long focus lenses because they have a smaller viewing angle than that of wide-angle lenses. For wide angle lenses, the length of the hood cannot be as long as those for telephoto lenses, as a longer hood would enter the wider field of view of the lens.

Lens hoods are often designed to fit onto the matching lens facing either forward, for normal use, or backwards, so that the hood may be stored with the lens without occupying much additional space. In addition, lens hoods can offer some degree of physical protection for the lens due to the hood extending farther than the lens itself.