Art through photography. Sigma has created this large-aperture F4 standard lens focused on delivering high-level artistic expression with its sophisticated optical performance and abundant expressive power through its 82mm filter diameter. Designed for artists who prefer creativity over multifunction and compactness. An artists' go-to lens for artistic photography, offering fine and stable image quality covering the basic shooting range from wide to mid-telephoto. Made to enhance an artists' creativity with casual snaps, close-up, still-life, portraits, and landscapes. The Hyper Sonic Motor (HSM) ensures a high-speed, and silent AF function, and enables sensible full-time manual focusing by simply rotating the focus ring. The OS (Optical Stabilizer) is incorporated to minimize camera shake. It is compatible with APS-C and Full Frame Sensor DSLR Cameras.
Show off your creativity with this Sigma 24-105mm F4 DG OS HSM Camera Lens!
Product Features in Detail
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 F4 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 F4, 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 Sigma's “Art” line, and it meets the highest standard of their 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. Also, the wide filter size 82mm is contributing for superior optical performance.
Optical Stabilizer
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.
Convenient handling
The lens' wide zoom ring ensures convenient handling. By 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 lenses 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 45cm
With a minimum focusing distance of 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.
Design concept
The new product lines incorporate 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 a special software (SIGMA Optimization Pro) that can update the lens firmware and adjust parameters such as focus.
Evaluation with Sigma's own MTF measuring system “A1”
Sigma used to measure lens performance with MTF measuring system using conventional sensors. However, Sigma has now developed their own 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 their quality control inspections. The SIGMA 18-35mm F1.8 DC HSM will all be checked using this “A1” before they are shipped.
