Sigma's EX DG UV filters benefit from a multi-layer lens coating, developed to counteract the highly reflective characteristic of image sensors. With older style filters, light would reflect off the image sensor, bounce off the lens & filter elements & re-enter the image sensor, creating a ghost image. The multi-layer coating dramatically reduces this effect. In addition to this, an optimum, neutral colour balance is ensured, increasing the white balance accuracy of the digital camera. The Multi-Coated DG UV filter perfectly eliminates the harmful effect of ultraviolet light. The multi-coated UV filter can be used with both colour & black-&-white film & digital sensors. Suitable for protective use & general photography. ...

This is a spare or replacement Sigma lens cap for 77mm filter thread lenses. ...

Attachment ring to allow the Sigma EM-140 Macro Ring Flash to be fitted to lenses with a 77mm filter thread. ...

The Sigma 77mm Protector filter is developed to protect the lens surface from dirt & dust as well as scratches. It is an ideal filter for regular use as it is completely colourless so does not affect colour reproduction. ...

Sigma's weather-resistant (WR) circular polariser (CP) filters remove reflections on the water's surface & glass windows, & increases the contrast in landscape photography. This effect is often used to increase the contrast & saturation in blue skies & white clouds. With excellent water & oil repellent functions, the filter surface repels water drops & provides resistance to fingerprints. Even if they appear on the surface they can be easily removed. ...

Sigma's weather-resistant (WR) ultra-violet (UV) filters prevent the bluish tone that generates when the weather is fine, by absorbing ultraviolet rays. It is effective in most situations, such as landscape, portrait & general photography on a sunny day. It is also an ideal filter for regular use as it is completely colourless so does not affect colour reproduction. With excellent water & oil repellent functions, the filter surface repels water drops & provides resistance to fingerprints. Even if they appear on the surface they can be easily removed. ...

The Sigma 8-16mm f 4.5-5.6 DC HSM Lens is an ultra wide zoom lens with a minimum focal length of 8mm, designed specifically for APS-C size image sensors, where it gives focal lengths equivalent to 12-24mm (35mm format) & an angle of view of Approx. 114.5-75.7 degrees. The Sigma 8-16mm features 4 low dispersion glass elements to compensate for colour aberration, while one hybrid aspherical lens & two glass mould elements give excellent correction for distortion & astigmatism. The Super Multi-Layer Coating reduces flare & ghosting while superior peripheral brightness ensures high contrast images throughout the entire zoom range. The Sigma 8-16mm f 4.5-5.6 DC HSM Lens incorporates an inner-focussing system & a Hyper Sonic Motor, ensuring quiet & high speed AF as well as full-time manual focus capability. With a minimum focusing distance of 24cm throughout the entire zoom range the 8-16mm lens allows the photographer to emphasise the subject by creating exaggerated perspectives. ...

The Sigma 8-16mm f 4.5-5.6 DC HSM Lens is an ultra wide zoom lens with a minimum focal length of 8mm, designed specifically for APS-C size image sensors, where it gives focal lengths equivalent to 12-24mm (35mm format) & an angle of view of Approx. 114.5- 75.7 degrees. The Sigma 8-16mm features 4 low dispersion glass elements to compensate for colour aberration, while one hybrid aspherical lens & two glass mould elements give excellent correction for distortion & astigmatism. The Super Multi-Layer Coating reduces flare & ghosting while superior peripheral brightness ensures high contrast images throughout the entire zoom range. The Sigma 8-16mm f 4.5-5.6 DC HSM Lens incorporates an inner-focussing system & a Hyper Sonic Motor, ensuring quiet & high speed AF as well as full-time manual focus capability. With a minimum focusing distance of 24cm throughout entire zoom range the 8-16mm lens allows the photographer to emphasise the subject by creating exaggerated perspectives. ...

The Sigma 8-16mm f 4.5-5.6 DC HSM Lens is an ultra wide zoom lens with a minimum focal length of 8mm, designed specifically for APS-C size image sensors, where it gives focal lengths equivalent to 12-24mm (35mm format) & an angle of view of Approx. 114.5- 75.7 degrees. The Sigma 8-16mm features 4 low dispersion glass elements to compensate for colour aberration, while one hybrid aspherical lens & two glass mould elements give excellent correction for distortion & astigmatism. The Super Multi-Layer Coating reduces flare & ghosting while superior peripheral brightness ensures high contrast images throughout the entire zoom range. The Sigma 8-16mm f 4.5-5.6 DC HSM Lens incorporates an inner-focussing system & a Hyper Sonic Motor, ensuring quiet & high speed AF as well as full-time manual focus capability. With a minimum focusing distance of 24cm throughout entire zoom range the 8-16mm lens allows the photographer to emphasise the subject by creating exaggerated perspectives. ...

The Sigma 8-16mm f 4.5-5.6 DC HSM Lens is an ultra wide zoom lens with a minimum focal length of 8mm, designed specifically for APS-C size image sensors, where it gives focal lengths equivalent to 12-24mm (35mm format) & an angle of view of Approx. 114.5- 75.7 degrees. The Sigma 8-16mm features 4 low dispersion glass elements to compensate for colour aberration, while one hybrid aspherical lens & two glass mould elements give excellent correction for distortion & astigmatism. The Super Multi-Layer Coating reduces flare & ghosting while superior peripheral brightness ensures high contrast images throughout the entire zoom range. The Sigma 8-16mm f 4.5-5.6 DC HSM Lens incorporates an inner-focussing system & a Hyper Sonic Motor, ensuring quiet & high speed AF as well as full-time manual focus capability. With a minimum focusing distance of 24cm throughout entire zoom range the 8-16mm lens allows the photographer to emphasise the subject by creating exaggerated perspectives. ...