Note 20 Ultra Nd Filter
Related Faq
Q
Can the strength of the ND filter be adjusted?
A
No, the ND filter from the magnetic set is an ND1000 (extends the shutter speed by a factor of 1000). But it would be technically difficult to construct a magnetic, yet adjustable, ND filter. I hope that K&F will bring more filters for the system onto the market over time. 
Q
Supported operators Note?
A
Please check sub-table 2 for the operators corresponding to different countries, please update the operation according to your site. For example Germany is: T-Mobile, Vodafone, E-Plus E-+ Mobilfunk 
Q
I have a tokina 11-20 mm ultra wide angle - are there any limitations or vignetting in the 11mm range with the filter set?
A
So with my sigma 10 20, only a little bit at 11 mm but no longer visible at 12 mm (aps-c) 
Q
Can I use a polariser together with the ND filter with this holder?
A
There does'nt appear to be a facility for holding a circular polariser on this system (i.e. the type you can rotate in the mount) 
Q
can this ND filter be used for solar photography?
A
i very much doubt it... it's worth risking your sensor and or your eyes... 
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