Hi, i recently bought a d5300 and i have a 18-140mm f 3.5-5.6 35mm f.18 and 50mm f1.8. I have a hoya cpl filter for the 35mm. I'm considering a ND filters for long exposures of clouds, waterfalls, buildings etc. However they are a little pricey and i blew my budget pretty big. I read 10 stops is the best for waterfalls but will be to dark for other uses. Here are my questions
1) Which lens should i buy the filter for, since they will most likely be landscapes im assuming the 35mm prime will be the better investment?
2) What stop filter should i buy?
3) Are Haida filters good? there is a 10 stop on ebay for $25
4) Should i consider square filters and buying a holder since a pack of 3 nd filters are only around $10 but the 10 stop is $60