ND split filter for 14-24/2.8

Hi,

maybe some of you using cokin filters in the past have an idea?

I am searching for a ND split filter like this hoya

http://www.hoyafilter.com/products/hoya/oef-08.html

but in form and shape like a square glass-plate, which is bigger in size than the diameter of the huge frontlens of the AFS 14-24/2.8. I need that for some special purpose, especially do dim the lights of cities in the valleys below, which you can see in my video here.

http://newswatch.nationalgeographic...tain-timelapse-a-soundgarden-of-night-lights/

when I am able to dim the city lights better I can show more sky (thats a nice application of a split ND filter). I have seen some astrophotographers in the past holding glassplate split ND filters in front of their wide angle lenses per hand just for the long exposures, but at that time I failed to take exact notes what they used.

thanks for any hints.

sincerely
christoph

Wow. Was that your video? I saw that a couple of days ago. It was absolutely incredible. I made everyone I saw during the following twenty four hours watch it. I've always had a fascination for time lapse photography. I need to try it one of these days.

Hi Jaqueline,

thanks. Just try it as soon as you can... it is an amazing kind of time related photography...

Kind regards
Christoph

Lee filters do a 150 Nd series for the lens you have but its not cheap!!! about 300 sterling! you can use the Hi tech filter system but it wont go out to 14mm ! i have a Sigma 10-20 and below 12mm you can see it!

the only problem with the Lee 150 series is that there is no CP filter as yet! they do a 105 mm one but its about 250 sterling including the attachment ring!!

saying that i have it and its gorgeous!!