Sigma 24-105mm f/4.0 ART DG OS HSM Lens (for Canon EOS Cameras)
Full-size, high-performance standard zoom lens.
The Sigma 24-105mm f/4.0 ART DG OS HSM Lens is a premium lens designed for full frame cameras and will also work with APS-C sensors with an effective increase in focal length. The 24-105mm f/4 is a highly versatile focal range and staple everyday lens. With the increasing resolution power of new sensors, it is designed to bring out the true potential of evolving camera technology. Sigma's 24-105mm f/4 includes proprietary Sigma technology including a Hyper Sonic Motor (HSM) which ensures fast, quiet and accurate autofocusing as well as Optical Stabilizer (OS) which compensates for camera shake.
A 9-blade rounded diaphragm creates beautiful background blur, while FLD and SLD glass elements compensate for various aberrations, distortion and curvature. The use of Thermally Composite Material (TSC) reduces size and weight, and as part of Sigma's new Global Vision design, it is compatible with the Sigma USB dock for further customization and Sigma's Mount Conversion Service.
Delivers high-level artistic quality:
Designed with a focus on sophisticated optical performance and abundant expressive power, Sigma's Art line of lenses delivers high-level artistic expression. Developed with the maximum emphasis on artistic touch, they are designed to meet the expectations of users who value a creative, dramatic outcome above compactness and multifunction. Ideal for studio photography, they offer just as much expressive scope when capturing architecture, starry skies, portraits and many other scenes.
Covering the standard shooting range of 35mm full size image sensor:
The convenience of a zoom lens enables photographers to capture various subjects without the need to change lenses. The SIGMA 24-105mm f/4 DG OS HSM is a very handy zoom lens that covers the basic shooting range from wide to mid-telephoto. Moreover, its constant aperture of f/4, OS (Optical Stabilizer) and HSM (Hyper Sonic Motor) enhances the lens' usability. It is ideal for portraits, landscapes and general photography.
Superior image quality:
This is a lens that represents the concept of the "Art" line, and it meets the highest standard of Sigma's quality test. For those standard lenses with a high zoom ratio, they tend to show astigmatic aberration, field curvature, distortions and color aberration. In order to compensate for these, various types of high-performance lenses, such as FLD, SLD and glass-molded aspheric lenses including double-sided aspheric lens, have been included into the optical system. In addition, it suppresses chromatic aberration very effectively at telephoto-end, and achieves superior image quality throughout the zoom range. This lens overcomes low peripheral brightness that is common for those lenses with similar specifications.
This lens incorporates an OS system which offers superior stabilization, making it possible to compensate for camera shake even in macro range photography where a small blur can be easily identified.
The lens' wide zoom ring ensures convenient handling. Putting the zoom ring in front allows the lens barrel to be more compact. The inner focusing system eliminates front lens rotation, enhancing the lens' stability and allowing use of Circular Polarizing filters.
Designed to minimize flare and ghosting:
Flare and ghosting were thoroughly measured and monitored from an early stage in the lens' development to establish an optical design which is resistant to strong incidental light such as backlight. The Super Multi-Layer Coating reduces flare and ghosting, and provides sharp and high contrast images even in backlit conditions. Attaching the matched petal type hood, which is supplied, will provide extra protection from flare and ghosting.
Minimum focusing distance of 17.7 in. (45cm):
With a minimum focusing distance of 17.7 in. (45cm) and a maximum magnification ratio of 1:4.6, this lens is excellent for close-up photography.
Hyper Sonic Motor:
The HSM (Hyper Sonic Motor) ensures a silent, high-speed AF function. Optimizing AF algorithm, smoother AF is achieved. It also enables full-time manual focusing capability which allows sensible focus adjustment by simply rotating the focus ring.
Incorporating Rounded Diaphragm:
The 9 blade rounded diaphragm creates an attractive round bokeh at large-aperture settings.
This product line incorporates rubber for the attachment part of the provided lens hood. For better usability, the designs of the lens cap and AF/MF changeover switch have been improved. In order to ensure high accuracy of the product, all metallic parts and the new compound material, TSC (Thermally Stable Composite), which has a high affinity to metal parts, are housed internally. On the lens barrel, the last three digits of its release year are engraved so the lens can be identified according to the year of its launch.
Brass made bayonet mount:
This lens incorporates a brass made bayonet mount which has both high accuracy and durability. A special treatment to reinforce its strength is applied to the surface giving it greater strength and making it highly resistant to long-term use.
Newly developed "USB DOCK" exclusively for new product lines:
Based on these new lines, Sigma has developed special software (SIGMA Optimization Pro) that can update the lens firmware and adjust parameters such as focus.
"Made in Japan":
All Sigma's manufacturing processes -- right down to molds and parts, with a few exceptions -- are carried out under a single integrated production system entirely in Japan.
Evaluation with Sigma's own MTF measuring system "A1":
Sigma used to measure lens performance with MTF measuring system using conventional sensors. However, they have now developed a proprietary MTF (modulation transfer function) measuring system (A1) using 46-megapixel Foveon direct image sensors. Even previously undetectable high-frequency details are now within the scope of quality control inspections. This lens will be checked using this "A1" method before it is shipped.
Applicable for the Mount Conversion Service:
As an experienced lens manufacturer that has been creating a diverse range of interchangeable lenses, Sigma offers a "Mount Conversion Service". With this paid service, the mount of your current SIGMA lenses can be changed to another mount of your choice. It gives a new life to your favorite lenses when you wish to use it on a different camera body.