GND filters

What does a circular GND filter do?
 

Half of the filters are clear and the other half is a GND filter, which becomes lighter at the top. When photographing with long shutter speeds, it is important to be able to control the light. Depending on where you want to block the light, you can place the circular GND filter in the correct position. In a landscape scene the sky is normally brighter than the foreground and at sunrise/sunset a fairly narrow beam of light around the sun is much brighter, so an R-GND filter is placed in front of the lens and moved to a position where the brighter part of the scene is covered by the R-GND filter and the margin between sky and sun, along with the margin between the sun and foreground, are blurred using the filter's transition zones.
 

For more information about circular GND filters: Click here

Need advice on which filter is best to use? View our Buying Guide.