Description
The HFS filter is considerably higher than the FA filter and contains nearly 50% more filter medium. It provides more contact time due to the higher filter bed, resulting in a better filtration and flocculation process.
The HFS 15 filter and higher-level models are constructed with a larger transparent filter lid and contain approximately 20% more filter medium. They also have an additional lid at the bottom of the filter.
ALEX –
Works as described.
ThePoolCleaners customer –
Works as expected
ThePoolCleaners customer –
works as advertised. solidly built.
Nicolas –
Solid deal for a IRND
Richard –
The seven stop filter has given me a chance to make some landscape images that I could not have done without it.
ThePoolCleaners customer –
use it for the live view on my cambo shooter and it works wonderful. just the right amount of density.
Graeme B. –
Best of the ND filters, with zero color change.
Russ –
Works as you would think. Almost an absolute need for Time Laps when using prolonged exposures.
james –
Looked like an air bubble trapped between 2 layers of glass.
Barrett –
Its only been lightly used so far but I like it