Kase Variable ND3-1000 82mm (no x-shape version)

A variable density filter uses two rotating polarizing layers of glass to reduce the light reaching the sensor and because of these variable layers some filters have an additional back layer. Cross polarization (a large Regardless of the brand or the price tag attached to it, some filters have been further developed and are less affected by this. With the addition of stop meters to prevent the user from running the filter above the minimum or maximum settings and reducing the density at which the filters operate. For example; 2-8 stops, instead of 1-10 stops.

In addition, the polarized glass of a variable density filter is different from a traditional CPL filter, which is used to reduce glare and glare or saturate colors in the sky and landscape. So if you want to achieve a polarizing effect, you need a CPL.
 

A variable density filter is best suited for videographers, this allows the user to quickly rotate the filter without having to change fixed f-stop filters, making it faster and easier to continue filming continuously without damaging the footage. stop, while still achieving a shallow depth of field and maintaining a constant shutter speed for video in bright light.
 

For photographers, some of the above advantages can be useful, in wedding and portrait photography, to make an adjustment as quickly as possible on the filter, which is screwed to the front of your lens. Without losing time and missing an important shot. However, magnetic circular filters may be a better solution for photographers in this category.
 

As for landscape photographers, those who want to capture long exposures, sunrise or sunset can use a variable density filter, but additional methods may be needed, to reduce the impact of the cross polarization through exposure blending and creating composites, which require knowledge post-processing is required.
 

The variable density filter can benefit those who are looking to shoot quickly, in changing lighting conditions and are looking for convenience and not having to carry multiple filters.