With this adjustable filter, you can easily and quickly determine the darkening using an adjustment ring on the filter. There are no longer any limits and you can react perfectly to the environmental influences in a fraction of a second. The exposure time is automatically extended by the darkening of the filter and you can isolate objects much better when taking photos with an open aperture. You can achieve amazing and breathtaking long exposure effects. You will be enthusiastic! Batteries must not be disposed of with household waste. You are legally obliged to return used batteries so that proper disposal can be guaranteed. You can hand in used batteries at a municipal collection point or at your local store. You also have the option of returning old batteries from our products to us with