82 mm -10 ND ?

Hello, i am looking for a -10 screw in neutral density filter for my 16-35 , is there such a thing and can they be stacked so get like -20 stops less light ?
Any suggestions and ideas would be welcomed .

I wish B+W made this filter in 82mm. I'd be all over it. The only thing I can recommend is the Singh Ray Vari-N-Duo or Vari-ND.

Singh Ray have a really high price and i doubt i can get them locally, any Cokin filters worth looking at with the same -10 ND specs ?

Cokin = color cast, quite bad :/ i have them (ND8 and GND) and this is one of reason they stay on shelf most of the time. :s Now i think if i have need for them and money i will buy better make.

Hitech do a 10 stop square ND but some users online note a slight magenta cast (click).

If you're only ever going to be shooting with a crop camera like your 50D and you can buy locally then I'd try the B&W 77mm with a step-down ring. I think it's unlikely that 2.5mm intrusion would be visible to a 1.6x crop camera and you can always return it if it vignettes.

I will be at least till February next year . So @ 16mm would i get vignetting ?

EDIT : Looking at the price of a step down ring and the filter itself locally , i could just go ahead and order the Singh Ray ...

The Singh-Ray will only get you 8 stops of light reduction, tops...

this is why I **** about the 82mm thread on the 16-35mmII...

Format will make you a 10 stop in whatever size you need. They make 4x6 already, X-pro is custom order but they'll do it. Make sure if you use a panel filter you seal the gap between the filter and the holder or reflections will show up.

Karlo wrote in post #8641798
Hello, i am looking for a -10 screw in neutral density filter for my 16-35 , is there such a thing and can they be stacked so get like -20 stops less light ?
Any suggestions and ideas would be welcomed .

As far as suggestions are concerned you could use a Gelatin Filter like this:

http://www.bhphotovide​o.com …_Neutral.html#a​ccessories

Not an ideal solution since they are delicate and any light coming into the side of a holder is going to be a major problem but your choices are limited it seems. Does that lens have a rear gel holder? That would make the gels a lot better to use.

jacobsen1 wrote in post #8661561
this is why I **** about the 82mm thread on the 16-35mmII...

Format will make you a 10 stop in whatever size you need. They make 4x6 already, X-pro is custom order but they'll do it. Make sure if you use a panel filter you seal the gap between the filter and the holder or reflections will show up.

Are the Format filter at least 2mm thick? If so, I'm ordering one!

Contact HP Marketing, the US Heliopan distributer. Heliopan will make a 10-stop screw-in ND filter for you. I use one with my 16-35. http://www.hpmarketing​corp.com/
973-808-9010

I see that you are in Europe, so you may be able to contact Heliopan directly.