Prized for event, portraiture, and sports shooting, the Canon EF, Nikon F and Sigma SA mount Sigma 70-200mm f/2.8 DG OS HSM Sports Lens is a flexible telephoto zoom characterized by its bright and sophisticated design. The fast constant f/2.8 maximum aperture excels in difficult lighting conditions and also offers increased control over depth of field for isolating subjects. In regard to the optical layout, an impressive 10 low dispersion elements are used to greatly reduce chromatic aberrations and color fringing for improved clarity and color accuracy. A Super Multi-Layer Coating is also featured, and helps to suppress ghosting and flare when working in strong lighting conditions.
Complementing the optics is an Intelligent OS system, which minimizes the appearance of camera shake for sharper results when shooting handheld. A Hyper Sonic Motor is also used to provide quick and quiet autofocus performance along with full-time manual focus override. The physical design of the lens also incorporates several seals to guard against dust and moisture, and a water- and oil-repellent coating has been applied to the exposed elements to prevent moisture, fingerprints, or smudges from sticking to the surface. Additionally, a fixed rotating tripod collar is featured, and has a removable Arca-type compatible foot for wide compatibility with different tripod or monopod heads.
A fast telephoto prime, the Nikon F, Sigma SA and Canon EF-mount 135mm f/1.8 DG HSM from Sigma pairs bright and sophisticated optics with intuitive handling and design. As part of the Art line of lenses, this 135mm f/1.8 is designed for high-resolution rendering, and utilizes FLD and SLD glass to control chromatic aberrations and color fringing for notable clarity. A Super Multi-Layer Coating also enhances image quality by suppressing lens flare and ghosting for improved contrast and color fidelity in strong lighting conditions. Additionally, making it an ideal lens for portraiture, the bright f/1.8 maximum aperture pairs with a rounded nine-blade diaphragm to benefit selective focus and shallow depth of field imaging with smooth bokeh.
Complementing the imaging capabilities, the lens sports a Hyper Sonic Motor to produce quick, smooth, and quiet autofocus performance with full-time manual focus override. The physical design utilizes Thermally Stable Composite material for durability in a wide range of environments, and a brass bayonet mount also offers rigidity and mounting precision.
As part of the Art line within Sigma's Global Vision series, this lens is designed to achieve truly notable optical performance and is ideally suited for creative and artistic applications.
Prime telephoto lens is designed for full-frame Canon EF-mount DSLRs, however can also be used on APS-C models where it will provide a 216mm equivalent focal length.
Bright f/1.8 maximum aperture is well-suited for working in low-light conditions and also provides greater control over the focus position when using shallow depth of field techniques.
Two F Low Dispersion (FLD) and two Special Low Dispersion (SLD) elements are featured in the optical design, and help to reduce color fringing and chromatic aberrations for improved clarity and color accuracy.
A Super Multi-Layer Coating has been applied to lens elements in order to minimize lens flare and ghosting and contribute to producing contrast-rich and color-neutral imagery, even in backlit conditions.
Nine-blade rounded diaphragm contributes to a smooth and pleasing bokeh quality.
The integrated HSM (Hyper Sonic Motor) realizes quick and quiet autofocusing, which is further complemented by an optimized AF algorithm to produce smoother focusing performance. The HSM also permits full-time manual focus control simply by rotating the focus ring at any time.
The lens is constructed using a Thermally Stable Composite (TSC) material, along with traditional metals, for greater precision and use in wide temperature variations.
The bayonet mount is constructed from brass for ensured accuracy and durability. Additionally, rubber sealing is incorporated in the mount design to render it dust- and splash-resistant.
This lens is compatible with the optional Sigma USB Dock for fine-tuning different lens characteristics and updating its firmware.
1080P Full HD High Speed USB webcam for PC Skype ,Video Calling Recording,Video Conference,Youtube Video record, Live streaming, 120fps high fps camera mini PC Webcam with Manual Varifocal Lens
Package includes:
1 1080P usb camera with varifocal lens (2.8-12/5-50mm optional)
1 3m usb cable
Tips about lens:
1) If you want to use camera in less than 5m distance for example , teaching , Youtube online live steaming,video conference,suggest you order camera with 2.8-12mm lens.
2) if you want to use camera in more than 5m distance , suggest you use camera with 5-50mm lens
3) If you want to capture very small object in near distance , suggest you 5-50 mm lens.
Features:
High Speed1080PHD USB Camera
Equiped with2.8-12mm/5-50mm varifocal lens, 4/6/8/12mm CS lens optional
Can drive30fps1080Pand60fps@720p, 100fps 480P
CMOS 1080P sensor for high quality image and low power consumption.
High speedUSB 2.0 interfacefor high resolution PC camera interface.
high pixel technology for sharp image and accurate color reproduction.
Adjustable parameters:Brightness/Contrast/Color saturation /Definition/Gamma/WB
Lens:2.8-12mm/ 5-50mm varifocal lens
View angle:depend on lens
Voltage:DC 5V
Current:150mA
Work temperature:DEGREES(-20~70)
Size:45 45 50mm
Support OS:
WinXP/Vista/WIN7/WIN8/win10
Linux with UVC
Mac-OS X 10.4.8 or later
Wince with UVC
Android 4.0 or above
Applications:
Car and ship control, electronic equipment, oil field equipment, industrial equipment, remote site monitoring, environmental monitoring, etc.
Used for all kinds of machine as below:
Machinery equipment, all-in-one machine, POS equipment, STB, smart box TV BOX, advisement player, LED display, automatic vending machine, safety box, notebook, video door phone, MID, Tablet external, evaluator, Medical Equipment, on-the-spot law enforcement, door bell and button system, cat-eye system, simple security system, teaching system, Interactive system,automobile data recorder. Project video capture, credit card machine, attendance machine,etc.
