Archived posting to the Leica Users Group, 2012/12/07
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I remember a thread in getdpi.com about this. Look under Medium Format (Dante's Inferno) and filter for a thread about ND filters. I person on there did a lot of testing. Membership is free and worthwhile. Bob On Thu, Dec 6, 2012 at 10:55 PM, Frank Filippone <red735i at verizon.net>wrote: > I am interested in slowing down things, a lot. I had picked out a 10 stop > ND filter, then did a bit more research, where I found this tidbit...( > though it is for a 6 stop reduction) > > > > "This B+W Neutral Density Filter reduces the light by six f-stops. With > this > filter and without changing the f-stop, a shutter speed of 1/60 s is > changed > to a full second, thus requiring the use of a tripod. Flowing water is > rendered as flowing in the photo, and people moving in streets are > dissolved > in unsharpness or become invisible. Because of its higher transmission in > the red beyond 660 nm, this filter brings a slightly warm tone to color > photographs. If this effect is undesirable, a B+W UV-/IR-Blocking Filter > 486 > in front of the neutral density filter (not behind it) remedies that > situation. The filter factor is 64x." > > > > > > Has anyone ever heard of a ND filter of this strength being a bit warm > toned? > > > > Frank Filippone > > Red735i at verizon.net > > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information > -- Bob Adler