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. ...

The Sigma 52mm Lens Cap is a spare or replacement Sigma lens cap for 52mm filter thread lenses. ...

Attachment ring to allow the Sigma EM-140 Macro Ring Flash to be fitted to lenses with a 52mm filter thread. ...

The Sigma 52mm 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 only filter that darkens the sky in colour photography without affecting colour balance; polarising filters cut out the glare from water & non-metallic surfaces & allow shooting through glass windows. Sigma's Multi-Coated circular polarising filters are designed for use with AF SLR & MF SLR cameras. The multi-layer coating reduces reflection. ...

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. ...

Attachment ring to allow the Sigma EM-140 Macro Ring Flash to be fitted to lenses with a 52mm filter thread. ...

The Sigma 55mm 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. ...