1. Sigma APO 300-800 F/5.6 EX DG HSM (Canon)

The Canon EF-mount APO 300-800mm f/5.6 EX DG HSM from Sigma is a sophisticated zoom characterized by its advanced optics and constant f/5.6 maximum aperture. Designated an apochromat, this lens uses a pair of extra-low dispersion elements to effectively eliminate color fringing and chromatic aberrations for high clarity and color accuracy throughout the zoom range. A multi-layer coating has also been applied to lens elements to control flare and ghosting for improved contrast and clarity. Super telephoto zoom is designed for full-frame Canon EF-mount cameras, however, can also be used with APS-C models where it will provide a 480-1280mm equivalent focal length range. Apochromatic optical design utilizes two extra-low dispersion elements to significantly reduce color fringing and chromatic aberrations for increased clarity and color fidelity. Internal focusing and zooming design maintains the overall length of the lens during use and also promotes faster performance. A fixed, rotating tripod collar offers well-balanced support for photographing atop a tripod or monopod with either vertical or horizontal shooting orientations.
2. Sigma 500mm F4 DG OS HSM Sports (Nikon)

The Sigma Global Vision arsenal, the 500mm f/4 DG OS HSM Lens takes its spot as the flagship in the speedy Sports line. Available here with a Nikon F mount, this super-telephoto lens lets you capture distant subjects, and with a speedy Hyper Sonic AF motor users will be able to easily track fast action. Also, this lens is equipped with an Optical Stabilizer system that compensates for up to 4 stops of shutter speed. Additionally, the 500mm lens is fully compatible with Sigma’s Global Vision teleconverter for getting an extended reach. This super-telephoto 500mm f/4 prime lens is designed for full-frame format Nikon F-mount cameras, and can also be used with APS-C models where it will provide a 750mm equivalent focal length. This optical design also helps to control distortion and limit vignetting. Optical Stabilizer system can compensate for approximately 4 stops of shutter speed for sharper images. Two modes are available, one for general use and one for panning, which uses Intelligent OS for more effective panning in any direction. The drop-in filter system works with 46mm filters. An optional RCP-11 Circular Polarizer filter is designed specifically for the lens and can be rotated while it is inserted. The lens also comes with a dedicated strap for the tripod foot which limits strain on the camera mount.
3. Sigma APO 300mm F2.8 EX DG HSM (Canon)

The Canon EF-mount Sigma APO 300mm f/2.8 EX DG HSM is a super-telephoto prime also characterized by its advanced optical and physical design. Its fast f/2.8 maximum aperture aids in isolating subjects using depth of field and also supports working in low-light conditions. A multi-layer coating has also been applied to lens elements to control flare and ghosting for improved contrast and clarity. The physical design also incorporates a removable, rotating tripod collar for easy attachment to a tripod or monopod, and a drop-in filter slot permits working with rear 46mm filters, such as the included circular polarizer filter. Super telephoto prime is designed for full-frame Canon EF-mount cameras, however can also be used with APS-C models where it provides a 480mm equivalent focal length. The multi-layer coating has been applied to individual elements to minimize flare and ghosting for improved contrast and color accuracy when working in strong lighting conditions. A removable, rotating tripod collar offers well-balanced support for photographing atop a tripod or monopod with either vertical or horizontal shooting orientations.
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