Singh-Ray ND filters

[desertmike]

Mike,
Thanks for the info. I guess that on my 24-70, vignetting would be identical. Too bad they don't offer a 82mm, I can't imagine using this filter and a step-down ring with a 16-35 II.

Check out Andrew's post above - he said on the 24-70mm the vignetting stops above 28mm.

And yes, it wouldn't work with the 16-35 II.

[francois]

Check out Andrew's post above - he said on the 24-70mm the vignetting stops above 28mm.

And yes, it wouldn't work with the 16-35 II.

Thanks for pointing me to Andrew's post.  I'll have to find a Vari-ND Duo and do the test but things might not be so bad in the end.

[MarkL]

I'm looking at buying one of these but the mad cost, $52 shipping to the UK plus import duty is making me look at alternatives. I probably only need 3 and 4 stop since I'll be using this to allow me to shoot with less dof with flash, at this price I could buy 2 b+w filters for all the filter sizes of my lenses!

In my travels around the net I found a similar thing from these guys: http://www.faderfilters.com/fadernd.html for much less

Update for anyone interested on alternatives, I bought the faderND for $70 (before of cheap fakes). The build quality isn't great if you are used to higher end filters like b+w etc. and for some reason there is a linear scale on it which makes no sense at all because the ND is anything but linear when you turn it! Had no problems with vignetting on my 35-70 and was able to shoot at f/1.4 with my 85mm in bight sun. There is a slight colour shift towards yellow/green and an observable drop in sharpness:

http://www.liddellphoto.com/ebay/fader-on.jpg
http://www.liddellphoto.com/ebay/fader-off.jpg

You get what you pay for I guess