Lightcraft Workshop 4x4 Fader ND Solution

I've been looking for a 4x4 ND solution for a couple months, but I just haven't pulled the trigger on anything. I know there are tons of Fader/Variable ND's in screw-on kind, like the 77mm ND.9 I use now, but I really want a 4x4 option to forgo having to constantly screw and unscrew filters.

This is the ONLY 4x4 Fader ND I've found

Considering the price is the cost of 2 or 3 Tiffen ND filters of static densities, I'm a little hesitant (I think the price is low), and I can't find any reviews or opinions anywhere!

Has anyone used these? I'm mostly interested in the side effects - chroma shift and sharpness loss. I assume the 'A' and 'B' filters are two specially made Polarizers.

There's a very short write-up and video on Cinema5D from 7 months ago: http://www.cinema5d.com/viewtopic.php?f=88&t=29467

But that's it! Can't find more information. This would be a great item for my kit and would offer me more control over exposure - since I shoot most often with DSLRs and still photo lenses with clicked apertures.

Anyone have some experience here?
 
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Could one duplicate this effect using two standard polarizers?

- Greg

I would imagine so, yes, and I wonder if others practice this currently with 4x4's.

The common problems with doing that are chromatic shifts, strange banding, and a loss of sharpness. That's why I was wondering if LCW came up with a high-quality Fader that doesn't have these problems - or, at least, to a lesser degree.
 

I've seen all those, but they only discuss screw-on filters and only passingly mention LCW's screw-on faders.

I see on LCW's website that the 4x4 Fader ND "has been a huge success," or whatever their verbiage was, but I can't find any sort of review other than Cinema5D's, which is more of a demo.

I think I might just buy it soon and do my own testing and review with different video cameras. Couldn't hurt.
 
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