Once again I am coming to you guys for any tips, links, suggestions you have for using GND filters. I just bought a set of filters, I got the cokin z pro holder and a 1,2,3 stop hitech hard line filter. I guess their hardline filter is not a true hardline filter it has more of a feathered edge which they suggested would be better. I was out the other day giving it a try and came up with some interestng shots. One question I have is can you stack the filters, like use a 2 and 3 stop at the same time. I know the holder will hold 3 filters but I dont know if you are supposed to use all GND at the same time. Thanks once again for tips.
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