sigma 300 f 4 pentax

Macro tubes move the lens farther away from your film or digital sensor, transforming your lens into a macro lens. The extension tube contains no optics or mirrors ...  more

The Minolta MD body screw adapter is an adapter that allows you to mount any lens with a M42 screw thread mount to a Minolta MD SLR camera body. Screw mount lenses ...  more

The Olympus 4/3 body screw adapter is an adapter that allows you to mount any lens with a M42 screw thread mount to an Olympus 4/3 SLR camera body. Screw mount ...  more

The Minolta Maxxum body screw adapter is an adapter that allows you to mount any lens with a M42 screw thread mount to a Minolta Maxxum SLR camera body. Screw mount ...  more

The Pentax K body screw adapter is an adapter that allows you to mount any lens with a M42 screw thread mount to a Pentax K SLR camera body. Screw mount lenses must ...  more

Features: Designed for use with full frame digital cameras. May also be used with smaller APS-c size sensors with a corresponding effective increase in focal length ...  more

Features: Designed for use with full frame digital cameras. May also be used with smaller APS-c size sensors with a corresponding effective increase in focal length ...  more

The Sigma 12-24mm F4.5-5.6 II DG HSM features one SLD and four FLD glass elements which compensate for color aberration and provide high image quality.Three ...  more

The Sigma Corporation is pleased to announce the new Sigma 12-24mm F4.5-5.6 II DG HSM. One SLD and four FLD glass elements compensate for color aberration and ...  more

The Sigma Corporation is pleased to announce the new Sigma 12-24mm F4.5-5.6 II DG HSM. One SLD and four FLD glass elements compensate for color aberration and ...  more

The Rokinon mirror lens attach to your camera with a standard t-mount adapter. T-mount adapters are available for all camera mounts. The Rokinon mirror lenses are ...  more

The Rokinon 500mm F8.0 mirror lens is highly powerful and is ideal for sports or nature photography. It is affordable, powerful and produces sharp & vivid ...  more

The Rokinon 500mm F8.0 mirror lens is highly powerful and is ideal for sports or nature photography. It is affordable, powerful and produces sharp & vivid ...  more

The Rokinon 500mm F8.0 mirror lens is highly powerful and is ideal for sports or nature photography. It is affordable, powerful and produces sharp & vivid ...  more

The Rokinon 500mm F8.0 mirror lens is highly powerful and is ideal for sports or nature photography. It is affordable, powerful and produces sharp & vivid ...  more

The Rokinon mirror lens attach to your camera with a standard t-mount adapter. T-mount adapters are available for all camera mounts. The Rokinon mirror lenses are ...  more

The Rokinon mirror lens attach to your camera with a standard t-mount adapter. T-mount adapters are available for all camera mounts. The Rokinon mirror lenses are ...  more

The Rokinon 500mm f/6.3 Mirror Lens is a high-quality, computer designed product that incorporates the merits of both reflex optics and refraction optics. This ...  more

The Rokinon 500mm f/6.3 Mirror Lens is a high-quality, computer designed product that incorporates the merits of both reflex optics and refraction optics. This ...  more

The Rokinon 500mm f/6.3 Mirror Lens is a high-quality, computer designed product that incorporates the merits of both reflex optics and refraction optics. This ...  more