I need a ND filter for my 52mm lens on Nikon D5000.
The problem is nobody sells 52mm ND (either Hoya-ND400 or BW-110).
Then I came across StepUp Ring.
Q1. Should I get 67 or 77mm filters? I am not even sure what camera/lens I will upgrade in two years. I just know everybody selling 77mm in Buy/Sell
Q2. Is there 52->67 or 52-->77 StepUp ring in the first place?
Are these StepUps easily available at Camera shops?
Q3. In daylight, if I buy a 10Stop filter, do I still need a 3Stop filter?
Please bear with me, as I am totally new to filters, and I have went through DareDevil's Newbies filter-guide already.
All tips and recommendations welcome.