Hitech filters new Pro Stop range is made from its Queens Award winning CR39 dyed substrate.
The Pro Stop range has been designed for use on long exposures and is available in 5 densities.
They are primarily used to control the image on longer exposures allowing use of much slower shutter speeds.
The visible effects created by using longer exposures is the effect of motion blur on any movement within your pictures, such as clouds, waterfalls, seas and rivers.
The Pro Stop filter is fitted with a foam gasket perimeter, which creates a seal between the filter holder and lens, thus reducing light spillage around the sides of the filter.
Pro Stop Range Transmission %
6 Stop 1.585
7 Stop 0.794
8 Stop 0.398
9 Stop 0.199
10 Stop 0.100
We have had the Pro Stop 10 filter independently reviewed by two professional photographers, to view each of the articles please follow links below:
http://www.dannylintonphotography.com/blog/2011/06/05/hitech-pro-nd-10-stop-review/http://blog.robertstrachan.com/archives/1314/hitech-pro-stop-review/