Using A Lens Hood And Filter
Related Faq
Q
Are there (Female) threads on the front of this filter "Can you stack (77mm filters) on top of this filter".
A
For this 77mm ND filter,the lens cap/hood should be 86mm. 
Q
Can I still use a normal lens hood on it? Does it need a larger size?
A
Hello! If you use the magnetic UV filter separately, or use the magnetic adapter ring together with the CPL filter, you can use a normal lens hood on it. Does not require a larger thread. If you use the magnetic adapter ring together with the ND1000 filter, you cannot use another lens hood on it. 
Q
If i rotate the density from nd2 to nd400 and have a lens hood connected to the 77mm front threads, will the hood move?
A
by the way, when you use a nd filter , you better not add a lend hood ,the lend hood should move. 
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
Can you attach a lens hood on the 52mm lens?
A
hello , if you put a lens hood on 52mm filter, you need a 55mm lens hood 
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