Moment Wide Lens And Polarizing Filter
Related Faq
Q
Q: Can the filter avoid the black cross phenomenon?
A
Answer: By design we can avoid the use of the filter in non-wide angle lens will not have dark corners, if your focal length is less than 24mm still may back to produce. 
Q
Can you attach a polarizing filter at the same time?
A
That's fine. The polarizing filters also have a rotary thread on the front where the filter plug-in system can be attached. 
Q
What lens hood will work for this filter?
A
I have the 77mm version of this and I am NOT able to use a lens hood on my Canon 17-40mm wide angle once the filter is on. I haven't tried putting on the hood first and then trying to screw on the filter yet. That's not to say that all lens hoods won't work but for me it does not under the scenario described above. 
Q
Does the filter holder support rotation adjustments for polarizing filters?
A
If you polarizing filter is square and size is 100X100mm, the hold is okay for you 
Q
The filter can avoid the black cross phenomenon?
A
By design we can avoid the use of the filter in non-wide angle lens will not have dark corners, if your focal length is less than 24mm may still return to produce. 
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