I have the B&W 10-stop ND filter that I used when I still had my Sigma 10-20mm. I'm also planning to buy an ND-4.
I've been eyeing on a couple of specialty wide angle lenses, mainly the Samyang 14mm and the Tokina 16-28.
Since they both have bulbous front elements, I was wondering if I can just HOLD the ND filter in front of the lens during the long exposure and achieve the same result as if I had screwed it onto a proper 77mm ring.
Would extra light seep into the image circle through the openings of the pedal-shaped hood?
Just a thought, thanks!



