The only drawbacks I find are that it did not come with a lens cap and that it has no hood to reduce flare. Don't have a solution yet for the hood, but I bought a lens cap for $10.
Variable ND. Lovely one filter solution
Thanks Richard, Ryan.
Do you guys know if anyone stocks them locally? Lightcraft are out of 77mm at the moment.
DIY. Stack PL over CPL and rotate PL. Though PL's hard to find nowadays.
Fader ND = Extreme crossbar effect at high stops with UWA.
Vignette can be fixed by zooming a little to 11mm. But this cross bar effect...
If you want it, PM Eugenep, he sells them.
I never saw the cross effect either. I heard it only happens when you stop down below intended max darkness.
DV Tec DSLR rig arrived on the UPS van
As far as I can tell from what I've read up on the web it's common to them all due to the nature of crossing two polarised lenses
They have changed the way I have shot stuff on the Canon 5dmkII Before I had to compromise on shutter speed or iris to get the exposure I wanter, now I can get it exactly right with 1/60th shutter in and as wide open or closed down as I want more or less. Also the joy is the ability to gently adjust exposure by turning the variable ND wheel on the front of the lens which gives you what is missing from still camera 35mm lenses, smooth exposure change during a shot. With these you can.
I quote others only to better express myself
yeah, it was researching into video for the 5D MKiI that got me interested in these too.