circular and linear Polfilter, a photo by stst31415 on Flickr.
I tried to get an ND-Filter with varying factor by combining a circular and a linear polfilter.
It worked fine, at least until I saw the results. the exposure is 30 seconds, the lens flare is pin sharp and the colors went amok.
I also have the impression that the reflected IR-light is starting to get importance versus the “normal” light.
It is a failure but it is beautiful.