A short time ago, I looked at the Haida NanoPro Variable ND filter and was instantly struck by the quality of the optics. The Haida filter presented a reasonably priced option with outstanding optical and built quality. Since that review, I’ve gone on to use that filter as a permanent addition to my kit bag. It’s rare for me to be on a shoot without it in use.
Now Haida has developed the format and produced the Haida Interchangeable NanoPro Variable ND filter.
In the past, I’ve seen quite a few magnetic screw-in filters and from the ones I’ve seen so far, I have to say I’m impressed.
Now Haida has produced a magnetic variable ND; it’s along the same lines as other magnetic filters but with the ability to adjust the density. It’s clever and not something that I have used or seen before.
In theory, it all sounds like a good idea, screw in the streamline filter holder and then pop on the variable ND that you want. When you want to change, pull off the filter and pop the new one on, all very simple.
Now when you use standard magnetic filters, you pop them on, and then they stay in place, no additional fiddling or rotating. However, as this is a variable ND, you will, of course, need to rotate it to adjust the effect.
To me this instantly sounds a little precarious, won’t that rotating action mean that it’s easier for you to dislodge the filter accidentally? Will the fit be that good? And won’t the effect of the magnets mean that rotation will be rough?
Only one way to find out and that’s to put the 2-5 and 6-9 Stop interchangeable NanoPro Variable ND Filter to the test.