OTHER 105mm F2.8 EX DG OS HSM Macro

OTHER

105mm F2.8 EX DG OS HSM Macro

Available mounts

Nikon F mount

Lens construction: 16 elements in 11 groups
Minimum focusing distance: 31.2 cm / 12.3 in.
Maximum magnification ratio: 1:1 (life-size macro capability)
Number of diaphragm blades: 9 (Rounded diaphragm)
Filter size: φ62 mm
Weight: 725 g / 25.6 oz.
High performance large-aperture medium telephoto macro lens with OS (Optical Stabilizer)
Floating inner focusing system moves two lens groups separately to minimize aberrations and maintain stable rendering throughout focusing range
HSM (Hyper Sonic Motor) provides quiet, high-speed AF and full-time manual focus override
Carrying case, lens hood, front & rear caps
Made in Japan

SPECIFICATIONS

FEATURES

LENS CONSTRUCTION / MTF

SAMPLE IMAGES

Camera Type DSLR

Corresponding Mount SIGMA SA-mount, Canon EF mount, Nikon F mount

Sensor size Full-frame [DG]

Lens Construction 16 elements in 11 groups

Angle of View 23.3°

Number of Diaphragm Blades 9 Blades (Rounded diaphragm)

Minimum Aperture F22

Minimum Focusing Distance 31.2cm / 12.3in.

Maximum Magnification Ratio 1:1

Filter Size φ62mm

Dimensions (Diameter × Length) ⌀78.3mm × 126.4mm / ⌀3.1in. × 5.0in.

Weight (g) 725g / 25.6oz.

Supplied Accessories Case, LENS HOOD LH680-03, HOOD ADAPTER HA680-01, FRONT CAP LCF-62mm III, REAR CAP LCR II

EAN Canon EF mount：00-85126-25854-2 (discontinued)
Nikon F mount：00-85126-25855-9 (discontinued)

Camera Compatibility LINK

Specification info *For Sigma SA mount

*Sigma SA and Sony mounts has been discontinued in production.

*Nikon mount of this lens is not equipped with an aperture ring, therefore, depending on the camera model some functions may not work.

*This lens cannot be used with film SLR cameras with the exception of the Nikon F6 and Canon EOS-1v.

*When using the OS function of a lens with a camera which incorporates a stabilizer unit, please turn the camera’s stabilizer unit off.

*When using the APS-C Hood Adapter HA680-01 with digital cameras with larger than APS-C size image sensor, vignetting will occur. Please remove he hood adapter id you are using these cameras.

Camera	SIGMA SD1
Shutter Speed	1/800s
Lens F Number	F6.3
ISO	100
Focal Length	105mm
Photographer	Kazuhiro Shiozawa

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Camera	SIGMA SD1
Shutter Speed	1/50s
Lens F Number	F4.0
ISO	100
Focal Length	105mm
Photographer	Kimio Yajima

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Camera	SIGMA SD1
Shutter Speed	1/800s
Lens F Number	F2.8
ISO	100
Focal Length	105mm
Photographer	Taichi Kozawa

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Camera	SIGMA SD15
Shutter Speed	1/160s
Lens F Number	F8.0
ISO	100
Focal Length	105mm
Photographer	Kimio Yajima

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Camera	SIGMA SD1
Shutter Speed	1/200s
Lens F Number	F2.8
ISO	100
Focal Length	105mm
Photographer	Kazuhiro Shiozawa

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Camera	SIGMA SD1
Shutter Speed	1/100s
Lens F Number	F2.8
ISO	100
Focal Length	105mm
Photographer	Taichi Kozawa

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Lens construction

SLD glass
MTF Chart

The MTF (Modulation Transfer Function) is one of the measurements for evaluating a lens’ performance, and it shows how faithfully the contrast of the subject can be reproduced on the image plane. The horizontal axis shows the image height (distance from the center of the image in mm) and the vertical axis shows the contrast value (maximum value is 1).
The closer the 10 line pairs/mm curve is to 1, the higher the contrast and clarity of the lens is, and similarly, the closer the 30 line pairs/mm curve is to 1, the better the resolution and sharpness of the lens is.

*The MTF chart depicts the result at the wide-open aperture.
*For mirrorless lenses that support distortion correction, the horizontal axis shows the image height equivalent to when an L-Mount lens is attached to a Sigma L-Mount camera with distortion correction applied. (The effect of distortion correction may differ depending on the mount and camera used.)
*The spatial frequency indicates the variation on the image plane before distortion correction is performed.
Spatial frequency

S: Sagittal Line

M: Meridional Line
10lp/mm
30lp/mm
Diffraction MTF
$Diffraction MTF chart$
Distortion

effective distortion

When you take a picture of a lattice pattern, it will appear as the blue dotted line shows. The red line illustrates how the lattice pattern will appear in the actual picture when any lens distortion is taken into account.

relative distortion

In this chart, the horizontal axis shows the ideal image height (the distance from the center to the edge of the image [mm]). The vertical axis shows the extent of distortion. The extent of distortion is represented by how much Y, which is the actual image height, grows (or shrinks) against Y0 which is the ideal image height.

When you take the picture of a square object, if the distortion amount shows a minus value, the image will be seen as expanded (Barrel distortion). If the distortion amount is a plus value, it will be seen as a recessed (Pincushion distortion). When the distortion value is close to 0, the appearance of distortion is very minimal.

Geometrical MTF chart

Geometrical MTF chart 2

Vignetting

The horizontal axis shows the image height (the distance from the center to the edge of the image [mm]).The vertical axis shows the amount of light in the image (based on the amount of light in the image center being 100%). If the peripheral amount of light is lower than the center, the four corners of image will be darker (vignetting).
F2.8
F5.6
F11

Large aperture medium telephoto macro lens

This medium telephoto macro lens allows you to maintain an appropriate distance from subjects while still getting close up photos. Since the working distance at its closest focusing position is 142mm, shadows of the lens and camera will not affect photography making it suitable for taking photos of subjects, such as flowers, under natural lighting conditions. In comparison to the Sigma 50mm and 70mm macro lenses, the main subjects can be defined with perfectly smooth and blurred backgrounds.
Floating inner focusing

This lens incorporates floating inner focusing which moves two lens groups separately. This minimizes aberrations which occur as shooting distance changes, and enables stable rendering of the image from infinity to 1:1 magnification. This also corrects image distortion, especially when taking close-up pictures. Since focusing does not change its overall length, this lens is easy to hold and use.
High rendering performance

The lens power layout produces excellent optical performance. High refractive index SLD (Special Low Dispersion) glass corrects chromatic aberration, spherical aberration and field curvature. It ensures high rendering performance at all shooting distances. The Super Multi-Layer Coating reduces flare and ghosting, maintaining quality images with high contrast.
Quiet and speedy AF

HSM (Hyper Sonic Motor) provides quiet and high speed AF. It is also possible to use full-time manual focus, even if the lens is set to autofocus.
Handheld photography with ease

Incorporation of the OS function offers superior stabilizaion As the stabilisation effect is visible through the viewfinder, it aids composition and accurate focusing.

* The OS effectiveness will gradually decrease as the shooting distance becomes shorter.

Optical Stabilizer ON

Optical Stabilizer OFF
Rounded 9 blades diaphragm

This lens has a rounded 9 blade diaphragm which creates an attractive blur to the out of focus areas. This also creates smooth, rounded out of focus highlights when taking photos which have a strong light source in the background such as lights shining on the surface of water.
APO Tele converters

This lens is compatible with Sigma’s APO TELE CONVERTERS. With APO TELE CONVERTER 1.4x EX DG, it can be used as 147mm F4 AF* telephoto macro lens, and APO TELE CONVERTER 2x EX DG as 210mm F5.6 MF telephoto macro lens. This allows a greater working distance while still achieving 1:1 macro magnification.

* AF does not work from 0.45m close up photography.
Tele Converter matching list

LINK
Dedicated hood adapter

When taking photos with APS-C sized digital SLR, the (supplied) dedicated hood adapter, which extends the length of the hood can be attached. This gives more protection from harmful lights that could negatively affect image quality.

* When taking photos with full-size digital SLR, please remove HA680-01 in order to avoid the edges of image being blocked.

High performance,large aperture mediumtelephoto
macro lens with OS(Optical Stabilizer).

High performance, large aperture medium telephoto macro lens with OS (Optical Stabilizer).
SLD glass provides good control of aberration and the floating inner focus system ensures high rendering throughout the focusing range. By using Sigma’s APO Tele Converter, it is possible to take photos at greater than 1:1 magnification. HSM ensures a quiet and high speed AF as well as full-time manual focus override. This lens has a rounded 9 blades diaphragm which creates an attractive blur to the out of focus areas.