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I am planning to get my first wide angle lens. Nikon 16-35 F/4 is the one which is on top of my list now and when reading the reviews about this lens in b&h web site, I noticed this question and answer.
Q : Can I use a Graduated ND filter with this lens( Lee Filter system)?
A : It's not recommended to use a ND filter at a focal length less than 35mm. This will cause a black x or a line in the center of the frame. Not sure what the technical word for this is.
This confuses me. I was planning to get some ND filters so that i can take some long exposures on bright environments.
Is this a true statement ? If yes, What are the focal lengths which people usually use NDFilters with (to photograph landscapes)