ND1000 Glass Filter

 

Instead of reducing the aperture to limit light， the photographer can add a ND filter to limit  light， and can then set the shutter speed according to the particular motion desired (blur of  water movement， for example) and the aperture set as needed (small aperture for maximum  sharpness or large aperture for narrow depth of field (subject in focus and background out of  focus). Using a digital camera， the photographer can see the image right away， and can choose  the best ND filter to use for the scene being captured by first knowing the best aperture to use  for maximum sharpness desired. The shutter speed would be selected by finding the desired  blur from subject movement. The camera would be set up for these in manual mode， and then  the overall exposure then adjusted darker by adjusting either aperture or shutter speed， noting  the number of stops needed to bring the exposure to that which is desired. That offset would  then be the amount of stop needed in the ND filter to use for that scene. 

 

Examples of this use include: 

Blurring water motion (e.g. waterfalls， rivers， oceans).  

Reducing depth of field in very bright light (i.e. daylight).  

When using a flash on a camera with a focal-plane shutter exposure time is limited to the  maximum speed -often 1/250th of a second， at best- at which the entire film or sensor is  exposed to light at one instant. Without an ND filter this can result in the need to use f8 or  higher.  Using a wider aperture to stay below the diffraction limit.  Reduce the visibility of moving objects  

 

Material:Glass

 

52mm Filter set fits  diameter lens  in 52mm